Description of individual data items and codes in CRIB

Geological Survey

The U.S. Geological Survey's (USGS) Computerized Resources Information Bank (CRIB) is being made available for public use through the computer facilities of the University of Oklahoma and the General Electric Company MARK III Service.1 This chapter contains a description of the individual data or information items 2 in the CRIB record, an index list of the data items, and a set of code lists. The information in Chapter B will be of assistance in understanding the file content and in formulating useful retrievals. Although approximately 400 data items are available, one record is unlikely ever to contain information on all these data items.

A data item is the smallest unit of information to which reference is made in a record. A data item consists of one or more of the following four main components: (1) Label, (2) item (label) description, (3) field (associated with the label), and (4) data (contained in the field).

The minimum requirement for defining a data item is a label. The label as used in the GIPSY program is a unique alphanumeric identifier of 1-7 characters. All data items in the CRIB record are defined in terms of a label, and the collection of all labels in the record constitutes the data dictionary or search dictionary. The label can be thought of loosely as the name of a field of a given data item, and

Bl it serves to identfy each field or data item to the user and to the GIPSY prog-ram. For example, the label A10 defines the field containing the DEPOSIT NAME. The label is the basis for identifying fields to be searched during a retrieval.

The item description is an optional descriptor associated with a given label. It consists of 1-59 characters and serves to describe the data item in readable English on the printout or to perform the function of a header line. For example, the label A10 has the item description DEPOSIT NAME associated wtih it, and the label Al generates the header line NAME AND LOCATION.

The field is the computer storage space made available to store data. All fields are taken as variable-length fields by the GIPSY program. However, these variable-length fields can be rigidly formatted by controlling the length and nature of the data entered into the fields; thus, many fields in the CRIB record are equivalent to fixed-length fields.

The data is the alphanumeric entry placed in the field. It may consist of text, a number, a code, or keywords.

This section contains a detailed description of each data item. The data items are arranged label by label in the order in which they are printed in the standard output record (see dummy record, fig. 1). The material includes the label, item description, format (if any) of data contained in the field, what the data mean, how the field is used, and other information. Following the descriptions of many labels is a code letter, or letters, indicating one or more key characteristics of that label, of the item description, of the field, or of the data contained in the field. The meaning of these codes is as follows: L ____Item (label) description only appears in

N __ __Numeric field or alphanumeric field output record. No entry is associated with the labels and the item description itself constitutes the data. Data items of this type are treated as literals (see Chapter A, p. A8) when used in the COPY, SORT, or COUNT commands.

treated as a numeric field.

B2 F __.Formatted field. PF _Partially formatted field or field con-

D ---.Discontinued label. Entries may appear

NS ___Label not on standard input form

C __A coded field. Entries are coded from

BIO Record number. The record number is a unique identifying code assigned to each record in the file; it is alphanumeric and usually contains seven characters. (F).

A. Form A used as source document.

B. Form B used as source document.

D. Special-purpose form used as source

U. Record that has been updated. Updating

S. Short form used as source document.

L. Long form used as source document.

USGS Country/organization. An international code indicating the country where the file resides and the organization maintaining the file in this example, the United States Geological Survey. (L). B30 Source. Used to indicate a primary source file (computerized or not) when the File Link ID (B50) is used for a secondary rather than a primary source. (NS). B50 File Link ID. An entry in this field indicates that further information on this locality is stored in some other file, either computerized or not. Examples of keyword entries in this field are RASS (Rock Analysis File), USBM (Bureau of Mines data), GEOPHY (Geophysical files), BLM (Bureau taining key words or codes of varying lengths.

on early records, but the label is no longer in use for current input.

code list indicated.

(NS, L, D).

(NS, L, D).

document. (NS, L, D).

can include significant or material additions, deletions, or other changes to the original data in one or more fields of the record. It does not include simple spelling or other minor typographical corrections. (L).

(NS, L, D).

(NS, L, D). B5 B6 of Land Management data), CONSV (USGS Conservation Division data), TVA (Tennessee Valley Authority), FS (U.S. Forest Service), and GUILD (metallogenic map file). (PF). B40 Deposit number. The deposit number is used optionally by reporters for file numbers; for a series of localities of a given commodity ; for a sequence of mineral localities; for field numbers; or for any other individual numbering system. B51 Geologic code. A coding system used in a special file on metallogenic map data. (NS).

G2 Name. Name of the reporter who filled out the original source document (or the geologist under whose supervision this was done). (PF).

Format: ___________, _____ ___

Gl Date. Date the original source document was filled out. (F, N).

Format:

G3 Update(s). Date the record was updated.

(F, N).

Format:

G4 By. The person who updated the record.

(PF).

Format:

A10 Deposit name. The most commonly used name of the mineral deposit, district, mine, prospect, claim, or occurrence. The deposit name also is used to identify summary records (for example, Zinc, Country Summary Peru). All Synonym name(s). Other names by which the deposit is known. A30 Mining district,'area subdistrict. Name of the mining district, area, subdistrict, or other large mineral-area name or regional geographic name.

B8 A31 Subdistrict. For optional use when district is divided into subdistricts. (NS). A32 Continent or global area. Intended to designate entire continents or large global areas (such as the Southwest Pacific). (NS). A40 Country code. Country in which the deposit is found. Each country is coded by two alphabetic characters see CRIB Country Code List (List C, p. B23-B25). (C, F). A50 State code. State, Province, or other second-order political subdivision below the country level. States in the United States and Provinces in Canada are coded by two numeric characters see State Codes for U.S. and Province Codes for Canada (List D, p. B26). In other countries, the State or Province names are written out. (C, F). AGO County. Names(s) of the county (ies) or other third-order political subdi vision (s). Census divisions may be used in Alaska. A67 Name of forest. Used mainly in records generated by the U.S. Forest Service. (NS). A61 Congressional District. Congressional District in which the deposit is located. (NS). A62 Drainage area. The drainage area in which the deposit is located. See Drainage Area Codes of the U.S. (List J, p. B28 and fig. 4). The numeric code for a drainage area is entered in the first two spaces in the field. The rest of the entry is used to describe the drainage area further (For example, the code 02 indicates the Middle Atlantic region, and "Upper Hudson River" indicates the specific drainage area.) or to enter information about the drainage area of a non-U.S. mineral deposit. (PF, C). A63 Physiographic province. The physiographic province in which the deposit is located. See Physiographic Provinces Codes of the U.S. (List K, p. B30 and fig. 5). The numeric code for a U.S. physiographic province is entered in the first two spaces in the field. »The rest of the entry is used to describe the physiographic province further (for example, Southern Catskills) or to describe the province of a non-U.S. deposit. (PF, C). A64 Land classification. A two-digit coded field classifying the land in terms of privateland ownership and various types of public lands see Land Classification Codes (List P, p. B30). This is n recently added field and as yet contains little data. (C, F). A100 Quadrangle scale. Under quadrangle scale is entered the denominator of the fractional scale of the map of the quadrangle where the deposit is located (For example, if the scale is 1:24,000, then the entry is 24000). (N, F).

(right Format: 24000 justified)

A90 Quadrangle number or name. The number or name of the quadrangle in which the mineral deposit is located. Quadrangle index maps and map information are available from the National Cartographic Information Center, U.S. Geological Survey, 507 National Center, Reston, Va. 22092. A91 Second quadrangle scale. Available for use if a second quadrangle (usually of different scale) is involved. Format same as A100 above. (NS, F, N). A92 Second quadrangle number or name.

Similar to A90 above. Used when a second quadrangle is reported. (NS). Location methods. Four possible location methods available are: geodetic coordinates, Universal Transverse Mercator coordinates, State Grid coordinates, and the public-land survey (township range section) system. In addition, an X-Y cartesian coordinate system is available for special-purpose use. Usuually just one of these methods is used by a reporter, but in some records, two methods (such as, latitude and longitude and also township, range, and section) may be used. Geodetic coordinates. For the two fields A70 Latitude and A80 Longitude please note that when an exact location is not available, reporters have used an arbitrary center point or the coordinates of a principal mine or quarry. Even though a single-point location may not be a realistic "center," nevertheless, an arbitrary location is important so that the area in question can be retrieved on the basis of latitude and longitude. For an example of a retrieval based upon latitude and longitude see chapter A, fig. 7, of this report.

B9 A70 Latitude (F).

A80 Longitude (F).

107 Altitude (N, PF).

UTM coordinates Format:

Format:

Usual format: 9999 FT

This is the surface elevation of the item being1 described (mine, prospect, or district). For a large area, the altitude of a point, or an average altitude is reported. The usual format is digits followed by a space, then FT or M (feet or meters).

A120 UTM northing (F, N).

A130 UTM easting (F, N).

A110 UTM zone number (F, N)

The Universal Transverse Mercator grid is shown on all USGS quadrangle maps printed since 1956. To define a point in the UTM system, a northing, easting, and zone number are required. The world is divided into 60 meridional zones numbered from 1 to 60; each zone covers a strip 6° wide in longitude. Zones north of the equator are positive (+) ; zones south of the equator are negative (-). The zone number is indicated in the lower left corner of 7^-minute topographic sheets. Within each zone coordinates are measured in meters north of the equator and east of the west boundary of the zone. Grid lines drawn on the base map, together with a metric coordinate reader, make it possible to plot a point in the UTM system. The following is an example of a point in the Northern Hemisphere:

UTM zone no.

State Coordinates ATI State X coordinate (F, N).

A72 State Y coordinate (F, N).

9 9 9 i 9 919919 9 . 9

AT9 Section (s). Space is provided for six sec-A73 State zone number (F, N).

Each state has its own coordinate system, and these can be used as location coordinates. State coordinate ticks are printed on the edges of most topographic maps. Detailed descriptions of the State coordinate systems can be obtained from the appropriate State agencies. A listing of the the four-digit zone numbers for each State can be found in "Program Description, D0154" (Buehrer, 1969, unpub. data), available from the U.S. Geological Survey Computer Center, 801 National Center, Reston, Va. 22092. Map X-Y coordinates A74X X (map coordinate for 1:250,000- scale map) (NS, N). A74Y Y (map coordinate for 1:250,000- scale map) (NS, N). A82 Position from nearest prominent locality. A75X X (map coordinate for 1:63,360- scale map) (NS, N). A75Y Y (map coordinate for 1:63,360- scale map) (NS, N). An example of an X-Y coordinate system is that used in many records on Alaska, in which each mineral location is referenced

BIO A77 Township(s). Space is provided for

A 78 Range (s). Space is provided for two

A81 Meridian. The name of the meridian in X-Y on 1:250,000-seale maps and also on 1:63,360-scale maps when available. This location system may in the future come into wider use, especially in locating drillholes.

two townships on the standard form. Three spaces are allotted for digits, followed by a space for N (north) or S (south) in each. (F).

Format:

ranges on the standard form. Three spaces are allotted for digits, followed by a space for E (east) or W (west) in each. (F).

Format:

tions (two digits each). If only one Twp-Rge is entered, all six sections may refer to that single township. If, however, two Twp-Rge locations are given, the first three sections may refer to the first Twp-Rge and the 4th, 5th, and 6th sections may refer to the second Twp-Rge.

Format: 1 0 1 1 1 2 ___ sections in 1st Twp-Rge

___ sections in 2nd Twp-Rge

that governs the set of townships and ranges. In some records, this has been abbreviated when entered.

This can include the direction and distance of the location from some nearby town or prominent geographic feature or other pertinent information. On some records in the CRIB file, this field is used to indicate the position within the section (that is, the quarter section).

ASS Location comments. Contains any comments concerning1 the location of the deposit.

CIO Commodities present. A fixed field containing seven subfields of four spaces each. This provides for listing of as many as seven commodities in a given mineral deposit. The subfields are occupied as in the examples given below. Note that entries are left justified in each subfield.

BE S N;

L S,T; 1 LIS IT 2

The codes for commodities are in LIST E (p.

B26-B28). Element codes are the standard chemical symbols of one or two letters. Other commodities are coded in three letters or three letters and a number. (F, C). Significance. This section classifies the commodities shown in CIO into major or minor products, coproducts, byproducts, potential products, and occurrences. Codes used in these six fields and method of entry are the same as in CIO. In many records, the reporters have entered commodities in the CIO field without breaking them down into their significance here. MAJOR Major product (F, C). MINOR Minor product (F, C).

Four subfields of four spaces each are allowed for each of the above two fields. COPROD Coproduct (F, C). BYPROD Byproduct (F, C). POTEN Potential (F, C). OCCUR Occurrence (F, C).

Three subfields of four spaces each are allowed for each of the above four fields.

Bll C20 Commodity specialist information. Commodity codes from List E (p. B26-B28) will be entered here (in the same format as in CIO) when the following conditions apply: (1) The reporter is a commodity specialist and is supplying information oh his own commodity, or (2) information is obtained from sources that were originally compiled by a commodity specialist. Four subfields of four spaces each are allowed for C20. C21 Special field 1 (NS). C22 Special field 2 (NS). C23 Special field 3 (NS).

The above three fields are used by commodity specialists for special information not entered into other fields. C30 Ore materials (minerals, rocks, and so on).

This field is for the names of the most important ore minerals, rocks, or other ore materials. C41 Commodity subtypes or use categories.

This field provides for the subdivision of commodities into specialized subtypes, if needed, or into categories based upon end use. Example: Bauxite coded AL1 in CIO, could be further classified as: C41 <BAUXITE, REFRACTORY GRADE> C50 Commodity comments. Comments pertaining to the commodity information section are entered here.

This section includes certain fields relating to coal, plus a general field for other types of analytical data. C44 Source reference. Refers to the source reference for the analytical data. BTU BTU. British Thermal Units (N, F).

Format:

SVL Sulfur. Sulfur content in weight percent

Format:

ASH Ash. Ash content in weight percent (N, F). Format: . ! i CARB Fixed carbon. Fixed carbon in weight percent (N, F). Format: I

C45 Volatile material Volatile material in weight percent (N, F). Format: I .

C46 Moisture. Moisture content in weight percent (N, F). Format:

C47 Thickness of coal. Thickness of coal in feet or meters (N, F). Format:

C43 Analytical data (General). This field is available for other types of analytical data.

This section contains a limited number of fields relating to the economics of a mining operation. These include (in the millions of dollars) : the costs for exploration, development, and expansion of the mining operation; the cost of the mill; the total investment; and the mill capacity (in tons or other units). A field also is available for general economic comments. These fields are listed below: C42A Exploration M$ (N). C42B Development M$ (N). C42C Expansion M$ (N). C42D Mill M$ (N). C42E Total investments M$ (N). C42F Mill capacity per year. In thousands of metric tons (or other units) per year. (N, PF). C42G Year applicable. C42 Economic comments. This field is used for any comments relating to economic factors that might govern or affect the exploration of the deposit or commodity. These could include such items as distance to market, railroad, or road; high altitude; labor or price situation; favorable or unfavorable mining conditions; or unusual milling problems.

(FT) or M)

B12 A20 Status of exploration or development.

This field shows the degree of development of the deposit into four categories in terms of the surface and underground information available. It will be coded by one of the number codes from Status of Exploration or Development (List B, p. B22). (C). A21 Property is active. This entry is intended to indicate whether there was any activity at the time the record was reported. It is applicable mainly to specific tangible localities (such as prospects, mines, or districts). Activity includes production or any present-day exploration or development work. (L). A22 Property is inactive. Indicates that the property was inactive at the time the record was reported. (L). LlO Year of discovery. The year or approximate year of discovery is entered here. In some records, generalized entries such as PREHISTORIC, PRESPANISH, OR REVO-LUTIONARY WAR may have been used here L20 By whom. Name of company, organization, or person most closely involved in the discovery. L30 Nature of discovery. Codes of one letter each are used here to describe the nature of discovery. (See Nature of Discovery, List L, p. B30). If the letter F is used indicating "other," this may be clarified under the comments field L110. L40 Year of first production. This field indicates the year or approximate year of first production. The same kind of entries are used here as in LlO above. A12 Present or last owner. The name of the person or organization that owns or recently has owned the mineral rights to the deposit. A13 Present or last operator. The name of the person or mining company that is actually working the deposit or that most recently worked it, if it is now inactive. If the operator is the same as the owner, this name should appear in both A12 and A13.

Three lines, each constituting a single field, are available in this table allowing for the accommodation of the following three subfields: Year. The year the work was done or started.

Type of work. Codes are used here from Type of Work Done (List M, p. B30). If OTHER is entered, it may be clarified in comments field LI 10. Seven spaces are allowed here. Format: X X X X X X X

Geologist and results. Name of geologist within the USGS and the results of his (her) work. L41 (1st line of table) (C, PF, N). L42 (2nd line of table) (C, PF, N). L43 (3rd line of table) (C, PF, N).

Five lines, each constituting a single field, are available in this table allowing for the accommodation of the following subfields: Year. The year the work was done or started.

Type of work. Codes are used here from Type of Work Done (List M, p. B30). If OTHER is entered here, it may be clarified in the field LI 10. Format: X X X X X I X X

Organization and results. Name of the organization that did the work and the results. L50 (1st line of table) (PF, C, N). L60 (2nd line of table) (PF, C, N). L70 (3rd line of table) (PF, C, N). L80 (4th line of table) (PF, NS, C, N). L90 (5th line of table) (PF, NS, C, N). Ll00 Reports available. This field is for citing available reports, either published or unpublished, that deal with the exploration and development of the deposit. LllO Exploration and development comments.

Comments on exploration and development, if necessary to clarify the above entries in this section.

C40 Deposit types. Examples of entries in this field are given in Deposit Types (List F, p. B28). This list is not exhaustive, and other deposit types may have been used. (PF).

B13 M10 Form/shape of deposit. Entries from Form/Shape of Deposit (List N, p. B30) are commonly found in this field. This list is not exhaustive, and other descriptive terms may be used. (PF, C). Size/directional data M15 Size of deposit. The general size of the

Abbreviations for units. In the following

M20 Depth to top (numeric field. Distance

M21 (units associated with M20) (C, PF).

M30 Depth to bottom (numeric field). Dis-

M31 (units associated with M30) (C, PF).

M40 Maximum length (numeric field).

M41 (units associated with M40) (C, PF).

M50 Maximum width (numeric field).

M51 (units assicated with M50) (C, PF). deposit will commonly be indicated by one of the key words: LARGE, MEDIUM, or SMALL. In some records the actual size is entered (in acres, sq km). Size, following the scheme devised for the metallogenic map of North America (Guild, 1968), relates to the amount of metal or mineral contained in the deposit, district, or area being described. This scheme, which shows the most common metals, is shown in figure 2. The key words represent different value ranges for the different commodities. For example, an iron mine containing about 150 million tons of iron would probably be considered a LARGE mine, whereas a LARGE gold mine would contain only about 500 tons of gold. (PF).

pages, certain fields are units fields associated with numeric entries. The abbreviations of these units are shown in Measurement Units (List H, p. B28). In the numeric fields, the figures given may represent only rough averages. These fields, although not formally defined as to field length, are nevertheless formatted fields because the data automatically start in position one.

from the surface to the highest point of the deposit. (N, F).

tance from the surface to the lowest point of the deposit. (N, F).

Overall length of the deposit, measured in the horizontal plane. (N, F).

Overall width of the deposit, measured in the horizontal plane. Applies mainly to steeply dipping deposits, such as veins. (N, F).

Large > Medium > Small

M60 Maximum thickness (numeric field).

This entry applies mainly to low-dipping deposits. (N, F). M61 (units associated with M60) (C, PF). The following four fields (M70, M80, M90, and M100) refer to specific measurements such as N. 20° E., or a generalized regional trend, such as NE. M70 Strike of orebody M80 Dip of orebody M90 Plunge of orebody MlOO Direction of plunge MllO Comments (description of deposit).

Comments relating to the description of the deposit.

Ml20 Surface. Indicates that the workings are on the surface. (L). Ml30 Underground. Indicates that the workings are underground. (L). MHO Surface and underground. Indicates that the workings are both on the surface and underground. (L). Description of underground workings Ml60 Depth of workings below surface (numeric field). Depth from the surface to the lowest workings (ground surf ace = 0). (F, N). M161 (units associated with M160) (C, PF). M170 Length of workings (numeric field).

The aggregate length of the subsurface workings. (F, N). Ml?l (units associated with M170) (C, PF). Description of open workings (surface and underground). Refers to surface quarries, open-pit mining, and to large underground stopes, rooms, and so on. MlOO Overall Length of Mined Area (numeric field) (F, N). M191 (units associated with M190) (C, PF). M200 Overall width of mined area (numeric field) (F, N). M201 (units associated with M200) (C, PF). M210 Overall area (numeric field) (F, N). M211 (units associated wtih M210) (C, PF). M220 Comments (description of workings).

This field is now used solely for comments on "Description of Workings." Previously it was used for comments on both "Description of Deposit" and "Description of Workings."

PROD Production. This label is used to indicate that there is an entry in one or more of the production tables or that one or more of the following labels have been used: YES, NO, LGE, MED, SML, D8, D9, DIG. It also generates the header line for the Production section. (L). YES. Yes. Ore or any of the commodities listed are being or have been produced. (L). NO No Production. No production present or past has occurred as of the date reported. (L). LGE Large production (L). MED Medium production (L). SML Small production. The reporter uses his own judgment in describing production as large, medium, or small. (L).

Seven lines (numbered 1-7) are provided in this table for annual production information for ore and for as many as six commodities; one line is available for each item reported. The lines are formatted as follows:

D1-D7 Item and accuracy. Commodity codes from Commodity Codes (List E, p. B26-B28) are entered in the first four spaces. The last three spaces are intended to provide an indication of whether the production figures are accurate, estimated, or an average. If figures are not available, the reporter should indicate whether amounts are small, medium, large. See Accuracy (List G, p. B28) for these codes. (F, C). D1A-D7A Amount (numeric field.) Production figures are reported in thousands of units. Therefore, the figure given must be multiplied by 1,000 to obtain the production figures in single units. (F, N).

Format:

Example: 0004.253 on printout would repre-

D1B-D7B Thousand units. These fields contain the units associated with the amount field. The reporter may have repeated the same commodity but with different production figures and different units on another line of the table. Units should be abbreviated as shown in Measurement Units (List H, p. B28). In rare records, figures greater than 99,999,999,000 may be entered. Then, millions of units will be entered in the "thousand units" field. (F, C). Example:

D1A would represent 234 thousand million tons or 234,000,000,000 tons. D1C-D7C Year. These fields of four spaces each contain the year of production, if known. On earlier versions of the CRIB input forms, the production years were entered in a field, D8, called "Production Years." This field is no longer used, and the entries have been moved into their proper places in various production tables. However, some records may still contain production years in field D8 instead of in fields D1C-D7C. (F,N). D1D-D7D Grade or use. An unformatted field containing the grade of the item. Some records may show a particular end use. Grade refers primarily to ore grade and should include the grade of the different metals in the ore. Example: D1D<11.5 % PB; 250 OZ/TON

Where the specific grade of the ore is unknown, the reporters have been asked to list the principal commodities (metals) in the ore. sent 4253 as an actual figure in single units.

(amount) (thousand units) 00000234 DIB MIL TONS

AG; 5 </c CU; 0.1 </c AU; ZN UNKNOWN>

B16 Nine lines (numbered 8-16) are provided in this table for information on cumulative production of ore and commodities and concentrates, and on overburden removed. This table may show a total cumulative production, production during a given time segment of two or more years, or intermittent production across several time segments.

The same general format is used here as in the previous table for Annual Production, except that a range of years may appear in fields G7C-G15C to indicate the range of years used for the cumulative production figures. G7-G15 Item and accuracy. Similar to entries under D1-D7 (see p. B15). (F, C). G7A-G15A Amount (numeric field) (8spaces).

Cumulative production figures are reported here in thousands of units. (See example under D1A-D7A on p. B16). (F, N). G7B-G15B Thousand units. These fields define the units associated wtih the amounts column. (See example and explanation under D1B-D7Bonp. B16). (F, C). G7C-G15C Years. These fields contain the range of years of the cumulative production. (F,N). G7D-G15D Grade or use. The grade or use, if kiiown. In the records of overburden removed, grade, or use does not apply. The grade is taken as the average across the span of years shown (see example under D1D-D7D, p. B16).

Seven lines (numbered 17-23) are provided in this table for information on annual production of concentrates and annual removal of overburden. This table is similar to the Annual Production (ore and commodities) table except that nine spaces are allowed in the "item" field instead of four. P1-P7 Item and accuracy. Similar to entries under D1-D7 (see p. B15), except that the codes used will be OVB (overburden) or CON (concentrates). (F, C). P1A-P7A Amount (numeric field). Annual figures for production of concentrates and removal of overburden are reported here in thousands of units. (See example under D1A-D7A on p. B16). (F, N). P1B-P7B Thousand units. These fields contain the kind of units associated with the amounts column. (See examples and explanation under D1B-D7B on p. B16). (F, C). P1C-P7C Year. These fields contain the year of production of concentrates or removal of overburden. (F, N). P1D-P7D Grade, remarks. The grade of the concentrates. Grade does not apply to overburden. Some records may contain short remarks. The following three fields (D8, D9, D10) may refer to items in any of the three production tables. D8 Production years. This field is discontinued. However, entries in this field are on older records. Production years are now being entered in D1C-D7C, G7C-G15C, P1C-P7C. D9 Source of information. This field is for notations on the source (s) of the information in the production tables. In many records, the complete reference (s) appear under General References (labels F1-F4) in the same record. If item numbers appear here, they refer to the individually numbered lines of the production tables. DlO Production comments. Explanatory notes that clarify or add information to the entries in the production tables. Item numbers may be used here also.

The classification of mineral resources used in the CRIB file follows closely that devised by McKelvey (1972). Several refinements have since been published (Brobst and Pratt, 1973; U.S. Geological Survey, 1975; U.S. Bureau of Mines and U.S. Geological Survey, 1976), but these have not changed the basic classification. The only modifications made in the CRIB file to McKelvey's original scheme are the substitution of "Measured," "Indicated," and "Inferred" reserves for the terms "Proved," "Probable," and "Possible" reserves. The basic elements of this slightly modified classification are shown in figure 3.

Three tables plus certain additional fields are i used to computerize the information on the i

B17 resources of a given mineral deposit. Information in the table RESERVES AND POTEN-TIAL RESOURCES represents the total current resources of the deposit, that is, the entire area of the box shown in figure 3. The table RESERVES ONLY represents the area of the upper left corner of the box, and the table PO-TENTIAL RESOURCES represents the remaining area of the box, that is, those marginal and undiscovered resources that are not classified as reserves. Detailed discussion of the concept of mineral reserves and resources and of the classification of mineral resources is found in Brobst and Pratt (1973) and U.S. Bureau of Mines and U.S. Geological Survey (1976).

The tables RESERVES ONLY and POTEN-TIAL RESOURCES provide for a separation of reserve data from data on potential resources. Separate treatment of these two aspects of mineral resources represent an important objective of any mineral resources appraisal or inventory. Such information, however, is not always available.

Six lines (numbered 1-6) are provided in this table for information on reserves plus potential resources of the given ore deposit or mineral locality. One line is used for each item reported. The fields in each line are similar to those previously described in the production tables. These fields are listed below: E1-E6 Item and accuracy (F, C). E1A-E6A Amount (numeric field) (F, N). E1B-E6B Thousand units (F, C). E1C-E6C Year of estimate (F, N). E1D-E6D Grade or use E7 Source of information. Short notations on source of information about the reserves and potential resources. A more complete reference might be found under General References (labels F1-F4) in the same record. E8 Comments. Explanatory notes are entered here, in particular, notes on the general outlook for finding more ore or developing the ore already there. In some records, the key words, "STUDY NEEDED," may be entered here to indicate that the reporter believes that the locality may have definite potential, warranting additional study of the locality.

Six lines (numbered 1-6) are provided in this table for information on reserves only, one line for each item reported.

Reserves may be treated as a single undedefined class in the table, or they may be divided into measured, indicated, and inferred reserves. If the latter is done, the class of reserves will appear in the "Grade or use" fields. The following entries are similar to these in the previously described tables. H1-H6 Item and accuracy (F, C). H1A-H6A Amount (numeric field) (F, N). H1B-H6B Thousand units (F, C). H1C-H6C Year of estimate (F, N). H1D-H6D Grade or use H7 Comments HS Source of information

Six lines (numbered 1-6) are provided in this table for information on potential resources, one line for each item reported. "Potential resources" refers to undiscovered deposits or to those identified reserves that at present are not recoverable. The following entries are similar to .those in the previously described tables. J1-J6 Item and accuracy (F, C). J1A-J6A Amount (numeric field) (F, N). J1B-J6B Thousand units (F, C).

B18 J1C-J6C Year of estimate (F, N). J1D-J6D Grade or use J7 Comments J8 Source of information

The entries on geology and mineralogy are those likely to bear some geological relationship to mineral deposits. Several entries (Kl, K2, K3, N30, N35, N40, N45, N50, N55, N60, N65) have a 10-space subfield for geologic ages allotted at the beginning of the entry. The codes for these ages will be found in Authorized Age Abbreviations (List 0, p. B30). On early records, however, the geologic ages were placed as complete words at the end of the entry. K7 General geological environment. A special-purpose field used only in records obtained from a tape file on metallogenic map data on North America. (NS). Kl Age/names of host rocks The geologic ages and the rock types associated with the ore are entered here. (PF. C). K2 Age names of associated igneous rocks.

Ages and names of igneous rocks associated with the deposit. If the host rock itself is igneous, this field may show the same information as is in Kl. K3 Age of mineralization. The geologic age during which the mineralization took place. (F, C). K4 Pertinent mineralogy. This field provides for the entry of mineralogic information on minerals other than ore minerals. K5 Important ore control or locus. One or more general or specific ore controls may be recorded here. K6 Geological descriptive notes. Discontinued field used on early records for comments on the geology and mineralogy section. On later records, these comments appear in the comments field N85. (D, NS).

N5 Major regional structures. This field may include a description of any significant large folds, faults, or other regional structures or trends. N10 Regional trends. Discontinued field used on early records. Now combined with N5 (Major Regional Structures). (D, NS). N15 Tectonic setting. Shield, geosyncline, platform, piedmont, or descriptive terms of other large-scale tectonic features may be entered here. N20 Major lithologic/stratigraphic units. Discontinued field. Entries may appear in early records, but the label is no longer in use. (D, NS). N25 Comments. Discontinued field. Entries may appear in early records, but now comments are entered in N85.

Age /names of formations or rock types N30, N35, N40, N45. Each of the four lines provided here has space for recording the ages and names of formations and rock types. Ages, coded from Authorized Age Abbreviations (List O, p. B30), should appear as the first subfield of each line. In older records, however, the geologic ages were placed at the end of each line. (PF, C). Age /names of igneous units or rock types N50, N55, N60, N£5. Each of the four lines provided here has space for the ages and names of igneous units or rock types. The placement of the geologic ages is the same as in the previous four fields. (PF, C). N70 Significant local structures. This field is for the description of any significant local structures that characterize the area. N75 Significant alteration. Descriptive text on alteration may appear here if alteration has a bearing on the given deposit. N80 Geological processes of concentration or enrichment. Additional information may be entered here on the basic causes of concentration or enrichment of the given deposit.

N85 Comments (geology and mineralogy).

Any information concerning the geology and mineralogy that has not been previously shown may appear in this field.

B19 GEN General comments. This field is for any kind of general information about the deposit that has not been placed in other fields or that could be an elaboration on another field.

Fl, F2, F3, F4 (4 fields). These four fields contain bibliographic references. Reporters are encouraged to follow the standard U.S. Geological Survey arrangement (author's last name, author's initials, date of publication, title of article, name of periodical). However, this arrangement has not always been followed. Therefore references appear in a variety of ways. More than one reference may be stored under each label; this has been done in some records, usually under label F4.

This section consists of an index list of labels (fields) arranged in label sequence for quick reference. Each entry contains the label, item description, and the "characteristics codes" as described in the previous section. Approximately 392 labels are available for search purposes. B20

J

B24 B26 B27 B28

WATER RESOURCES COUNCIL^ /

siuTH-AfLANTIC GULF^REGION 1 ... S^oTi.*" _ >/ '

_.r^r.

Alpha-numeric information (alphanumeric, al-

Assumed decimal point (implied decimal point)

B30

phameric) Information consisting of any combination of digits (0-9), letters (A-Z), and special characters (such as /, $, or ?,).

A decimal point the position of which is known, but which is not physically entered (punched) into a numeric field. Batch processing The sequential processing of records as a group (batch), one group at a time. Batch processing is in contrast to on-line processing, during which each unit of data is processed immediately at the time of presentation as in the airline reservation system. Baud The speed of data transmission in bits per second. Command procedure A user-oriented program composed of a prearranged set of operations steps and driven by user-controlled command words, specifications, and options. Conversational (interactive) mode The user is communicating with the computer system in a "conversational" manner from a terminal by sending commands to the system. The system executes the commands and sends the reply back to the terminal. One type of on-line processing. Data item (data element, information item, field) The smallest unit of information to which reference is made; for example, "country," "State." A set of related data items constitutes a record.

B31 Direct access The process of finding informa-

Disk (disk pack) A storage device consisting

Field (data item, information item) A speci-

File A collection of related records as a unit;

File maintenance Modification of file content; tion in storage, where the time required is independent of the location of other information in storage. A disk is a direct-access device. This is in contrast to the sequential access of tapes.

of a circular metal plate that has magnetic material on both sides and that is mounted on a rotating shaft. Read-write heads service both sides of the disk. Ten stacked disks constitute a disk pack.

fied category of data treated as a whole. The basic unit of a record.

for example, the records file and dictionary file of CRIB. Also, in the general sense, a collection of related files; for example, the CRIB file.

for example, insertions, deletions, transfers, and corrections. Fixed-fields (fixed-length fields) An arrangement in which the fields in a record are set beforehand to a specified length. Fixed-length records Records of predefined length. Loosely used to mean that both record length and field length are set beforehand to specified length. Floating decimal A decimal point without a predetermined fixed position within a numeric field. In a six-position number field, for example, the decimal may be in any of the six positions, depending upon the size of the number. Foreground Interactive (conversational, on-line) mode of operation in which the user is communicating directly with the computer. Foreground driver The command procedure program forming the interface between the GIPSY program and the General Electric Mark III System. Format A predefined arrangement of characters, fields, print lines, and so forth. The term, "arrangement," is never used in computer work. Interface A program or device that translates an initial program or signal into a form compatible with the next program or device. Job Control Language (JCL) The language used to supply the necessary information to the computer system so that it can run your job. Includes such items as the name and address of the data file to be processed, the name of the program to be executed, what to do with the results, and so forth. Label As used in GIPSY, a set of one to seven alphanumeric characters used to identify a data item or field to the GIPSY program. Literal In the GIPSY system, a set of characters inserted into the output record of the COPY command. Parameter statements (search variables) A list of the data elements the computer is to search for during a retrieval. Program A set of instructions that tells the computer how to solve a problem. Retrieval operation The actions connected with the recovery of information stored in a computer storage device.

B32 RPG (report program generator) An IBM

Software Programs that help run the different

Spanned record A record that overflows from

Subroutine A program that is linked to a

Track address A number identifying the loca-

Utility programs Programs used to perform

Variable fields (variable-length fields) Fields

Variable-length records (variable-length forprogram language that provides a convenient programing method for producing reports, performing calculations, and manipulating data.

components of a computer center and help the user to communicate with the computer.

the end of Tone track on a disk to the beginning of the next track.

larger program and that performs a single task whenever the main program calls upon it to do so.

tion where information is stored on disk.

certain standard functions, called housekeeping functions; for example, update, transfer data from one device to another, sort programs, and so forth.

having no predefined lengths.

mat) A field or record of no predefined length.

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