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Mineral Resources Tasmania Structure of the GIS Databases

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Mineral Resources Tasmania Structure of the GIS Databases Mineral Resources Tasmania TASMANIA DEVELOPMENT REPORT 1994/07 AND RESOURCES Structure of the GIS databases by M. P. McClenaghan, M.J.Roach and R.S.Bottrill MINERAL RESOURCES TASMANIA PO BOX 56 ROSNY PARK TASMANIA AUSTRALIA _RE_PO__ R_T_I_9_94_IO_7 _____________________ ST_R_U_C_T_U_RE __ O_F_G_'_S_D_A_T_A_B_A_SE_S ____________________________ --=2\~:2 CONTENTS MIRLOCH Introduction ........ ' ......... " ... ... ... ................................. 3 Key to Mirloch listing abbreviations ..................................................... 4 Abbreviations used in deposit names ... 4 Abbreviations used in commodities ... 5 Abbreviations llsed in references 7 ROCKCHEM Field Description 8 Introduction 8 Sample table 8 Majors table ....................................................................... 8 Traces table... ... ................................................................ IO REE table .................................................................... IO Field Definitions 11 Sample table 11 Majors table ....... .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 11 Traces table... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 12 REE table .... .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 12 Authority Tables ........................................................................ 13 References ... ..' ... ... ... ." . 13 Originators ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 14 Period ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 14 DORIS Field Description ...... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 15 Field Definitions ........................................................................ 15 Doris table .............................. 15 STRUCTURAL GEOLOGY DATABASE Introduction .................................... 16 TASSTR.PAT ................................... 16 Authority Tables ......................... 16 STREAM SEDIMENT DATABASE Introduction... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 19 TASSED.PAT ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 19 TASSED.ANL... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 19 TASSED.SRV .............. 19 Authority Tables ........................ 19 ATTRIBUTES FOR GEOLOGICAL MAPS Introduction. .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 22 Geology.pat... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 22 Geology.lut ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 22 Geology.rel ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... .... ............... 22 Geology.ref ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 22 Authority Tables .... .. ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... 22 FIGURES I. Structural symbols 18 2. Structure of stream sediment database ............................................ 21 3. Geological map attribute scheme ..................................................... 23 _RE_PO_R_T_19_94_'_07__________ ..::S.:.TR::.U.:.C.:.T.:.U::.RE=-O:.:F_G.:.'..::S.:D:;.A:.:T.:.A..::B.:..:A:.SES=- ______________.::..3 \32. MIRLOCH possible (note UR is used for uranium, and some similar exceptions). A list of recommended abbreviations is provided on pages 5 to 7. Commas are used to separate INTRODUCTION commodities, e.g. CU, PB, ZN. MIRLOCH is a computerised database of mineral deposits Minor Commodity (11) in Tasmania. Data recorded include the name(s), The minor exploitable commodities in order of importance. commodities, location, age, form and strike of The distinction from the above item is somewhat arbitrary, mineralisation, the host rock grouping, and references. and usage is similar. The MIRLOCH database is loosely related to the MINLOC database of the Bureau of Mineral Resources. It is designed AMG Co-ominates (6,6) as a quick reference to particular deposits, particularly for Full AMG co-ordinates to the nearest metre if possible, mineral deposit map production, resource assessments, and excluding the first 5 in the northing (i.e. 6 figures for mE and GIS related applications. 6 figures for mN). This item is compUlsory. The data are presently available on 3.5 inch DOS-formatted Co-ominate error (1) discs in ASCII format with 'I' delimiters. There are currently The accuracy of the given co-ordinate is represented by a 3205 deposits recorded, and the data take up 440 kB of number as indicated in the list on page 4. memory. Map sheet (5) The codes are briefly described below for each item. Numbers in parentheses following each item indicate the The 1:50 000 National Map Sheet Index Numbers, e.g. maximum number of characters available. The 83124 for Broadmarsh. corresponding lists of abbreviations are listed on pages 4 to 7 of this report. Status (1) Either the present status of a mine (and an indication of Quadrangle (2) whether reserves are koown), or whether the deposit is a Mandatory number field giving the number ofthe quadrangle prospect, mineral occurrence or a mineralised area. A in which the mineral deposit occurs, e.g. 40 for Alberton. mineralised area may be, for example. an extensive alluvial gold field, an area of erratic or subeconomic mineralisation, etc. See the list on page 4. Reference No. (5) This is unique number for each mine or mineral occurrence. Size (1) The first two characters indicate the 1:50 000 geological The estimated total in situ size of the deposit (in tonnes for quadrangles, followed by a three-digit serial number. For 3 example 37017 represents deposit 17 on quadrangle 37 hard-rock deposits, or in m for placer and alluvial deposits) (Sheffield). The number for quadrangles 1 to 9 inclusive is represented as indicated on page 4. should be prefixed by 0 (e.g. 09001). Host Rock (2) Mine/deposit name (40) The relevant time/stratigraphic units hosting the deposit. The name(s) of the mine or mineral occurrence where Two host rocks may be defined to cater for discordant known. Where the name is unknown, the deposit may be deposits that traverse these time/stratigraphic boundaries. given the Mining Lease number. the name of the watercourse The units are listed on page 4. (for alluvial workings), named after the relevant prospector, prospecting association, etc. (if koown) or simply titled Age ofMineralisation (1) "Unnamed". If a series of significant deposits with the same The age of the mineralisation using the subdivisions name exist in a limited area, they may be appended A, B, C, indicated on page 4. The age of the primary mineralisation etc., or a centroid of the deposits given as a single deposit. is given if the ore has been later remobilised. The age is Alluvial goldfields and other mineral fields may be denoted usually inferred. in this manner. Form ofdeposit (2) The abbreviations recommended in this item are listed on The overall form of the deposit and/or nature of the page 4. mineralisation, using the classifications on page 4. Duplicate names should be separated by semi-colons. Other delimiters used previously, however, include: the backslash Strike (3) ( /), a comma and OR, while others are enclosed in The strike ofthe deposit, where applicable, in therangeO-359 parentheses ( ) or quotation marks. These will be amended in (OT). If unkoown or inapplicable, use -1. due course. Exploration ofDeposit (5) Major Commodity (8) Exploration which has been undertaken on this deposit. Up The main exploitable commodities in order of importance. to five methods may be entered (see page 4). Prospecting Chemical symbols are used for metallic resources where signifies pits, trenches or shafts. Geological mapping refers ~~_R2_1~9~!..°2. __________________________________________________________________STRUCTURE OF GIS DATABASES ~12~ ~"""- to detailed surface and/or underground mapping. 6 Permo-Triassic Geochemical surveys refer to detailed soil sampling as well 7 lurassic-Cretaceous as systematic chip sampling of mineralisation and host rocks. 8 Tertiary Geophysical surveys refers to ground-based techniques 9 Quaternary related to the deposits. Drilling refers to any drill hole intersecting the deposit. FORM OF DEPOSIT o Volcanic massive sulphide References/Comments (38) I Stratiform The best and most recent references available should be listed 2 Vein (single, sheet, saddle) here, plus relevant comments if space permits. Abbreviations 3 Stockwork for publications are listed on page 7. Examples: GSBSO 4 Disseminated p123; TCR 90-1234; MRV Min. Map S. S Replacement 6 Pipe 7 Placer Key To MIRLOCH Listing Abbreviations 8 Residual 9 Other (noted in references) CO-ORDINATE ERROR I <SOm EXPLORATION OF DEPOSIT 2 <100m 3 <SOOm o Nil or no known exploration 4 < I km I Prospecting S >Ikm 2 Geological mapping 3 Geochemical surveys STATUS 4 Geophysical surveys S Drilling o Operating mine I Non-operating mine - reserves known 2 Non-operating mine - reserves unknown 3 Abandoned mine - reserves known Abbreviations used in deposit names 4 Abandoned mine - reserves unknown S Abandoned - mined out 6 Prospect - explored 7 Prospect - unexplored
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