Attribute definitions for mineral occurrences
For each locality or site on the Greenland Mineral Occurrence Map, a number of attributes describe details about the occurrence.
The information becomes available in a table by clicking on a mineral occurrence on the map. For technical reasons to do with
the ESRI Arc-environment, the attributes are names abbreviated to a maximum of 10 characters.
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Rec
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A GIS attribute – used internally by ArcIMS
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FID
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A GIS attribute – used internally by ArcIMS
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#SHAPE#
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A GIS attribute - point, line or polygon.
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ID_No
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Identification number. Each mineral occurrence has been given a unique identification number. Closely situated, similar occurrences have been grouped and one has been chosen to represent the group, and the description is mainly based on this site.
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Ref_ID_No
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Reference identification number. This give the site that has been chosen as the representative mineral occurrence of a group of occurrences, to which also this occurrence belongs.
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MO_Name
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Mineral occurrence name. It refers to the name of the occurrence - in many cases will this name be a geographic place name.
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Long_DD
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Longitude of the mineral occurrence given as decimal degrees. The reference system is World Geodetic System 1984 (WGS 84).
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Lat_DD
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Latitude of the mineral occurrence given as decimal degrees. The reference system is World Geodetic System 1984 (WGS 84)
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Signifi
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Significance of the mineral occurrence, expressed by a simple ranking into the following classes:
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Mineral deposit or mine
- denotes an operating mine, abandoned mine, or a mineral occurrence that is believed to have a high potential for becoming economically feasible; it could be considered uneconomic because of lack of sufficient information.
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Mineral prospect
- denotes a mineral occurrence, which has been drilled or investigated in some detail and is believed to have a moderate or small potential for becoming economically feasible.
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Mineral showing
- denotes a mineral occurrence, which has a significant concentration of ore minerals, but is believed to have no economic feasibility on its own.
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Mineral indication
- denotes a mineral occurrence of minor extent, with only a small concentration of ore minerals, or an occurrence for which information is currently limited.
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UN_Code
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United Nation Classification Code. A three digit code describing the economic significance according to the "United Nations international framework Classification for reserves/resources - Solid Fuels and Mineral Commodities" – see the figure here below. The three digit code – EFG - can be described as E = degree of Economic Viability, F = stage of Feasibility Assessment, and G = stage of Geological Assessment.
The following UN-Code Descriptions are relevant:
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Economic (E1)
Feasibility Study/Mining report (F1)
Detailed exploration (G1)
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121
Economic (E1)
Prefeasibility Study (F2)
Detailed exploration (G1)
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122
Economic (E1)
Prefeasibility Study (F2)
General exploration (G2)
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211
Potentially Economic (E2)
Feasibility study/Mining report (F1)
Detailed exploration (G1)
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221
Potentially Economic (E2)
Prefeasibility study (F2)Detailed exploration (G1)
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222
Potentially Economic (E2)
Prefeasibility study (F2)General exploration (G2)
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331
Intrinsically Economic (E3)
Geological study (F3)
Detailed exploration (G1)
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332
Intrinsically Economic (E3)
Geological study (F3)
General exploration (G2)
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333
Intrinsically Economic (E3)
Geological study (F3)
Prospecting (G3)
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334
Intrinsically Economic (E3)
Geological study (F3)
Reconnaissance (G1)
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Figure from UN-ECE (1997).
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Comm_Grp
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Commodity group describes the main type of commodities present in the selected mineral occurrence according to the following table and examples of the elements/mineral included in the groupsCommodity group Geochemical elements/minerals
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Base metals
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Cu, Pb, Zn, Sn
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Light metals
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Al, Mg, Ti, Li
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Iron and ferroalloys
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Fe, Mn, Cr, Ni, Co, Mo, W, V
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Speciality metals
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REE, Y, Zr, Li, Be, As, Bi, Sb, Cd, Ga, Hg, Nb, Ta
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Fissionable metals
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U, Th
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Industrial minerals
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Graphite, phosphate, cryolite, sillimanite/kyanite, diopside, garnet
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Gemstones
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Diamond, cordierite (dichroite), ruby
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Comm_1
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Commodity 1. The main commodity of interest – often the most important.
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Comm_2
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Commodity 2. The second most important commodity.
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Comm_3
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Commodity 3. The third most important commodity.
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Other_Comm
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Other commodities. Any additional commodities present
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GSC_Dep_Ty
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Classification into mineral deposit types used by the Geological Survey of Canada for Canadian mineral deposits (Eckstrand et al. 1996), which is adopted here in a slightly modified form to accommodate Greenlandic mineral occurrences. Classifying geological phenomena always implies a degree of simplification and the use of these categories should be regarded as a general way to refer to Greenlandic mineral occurrences to internationally well-known types of mineral deposits:
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1.0
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Placer uranium, gold
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1.2
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Placer (Placer Au, Pt)
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2.0
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Stratiform phosphate
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3.0
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Stratiform iron
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3.2
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Algoma-type iron-formation
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4.0
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Residually enriched deposits
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5.0
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Evaporites
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6.0
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Exhalative base metal sulphides
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6.3
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Volcanic-associated massive sulphide base metals
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6.4
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Volcanic-associated massive sulphide gold
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7.0
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Unconformity-associated uranium
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8.0
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Stratabound clastic-hosted uranium, lead, copper
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9.0
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Volcanic redbed copper
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10.0
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Mississippi Valley-type lead-zinc
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11.0
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Ultramafic-hosted asbestos
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12.0
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Volcanic-associated uranium
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13.0
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Vein uranium
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14.0
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Arsenide vein silver, uranium
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15.0
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Lode gold
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15.2
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Quartz carbonate vein gold
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15.3
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Iron-formation-hosted stratabound gold
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16.0
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Clastic metasediment-hosted vein silver-lead-zinc
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17.0
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Vein copper and hydrothermal alteration (Vein copper)
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18.0
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Vein-stockwork tin, tungsten
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19.0
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Porphyry copper, gold, molybdenum, tungsten, tin, silver
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20.0
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Skarn deposit
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21.0
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Granitic pegmatites
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22.0
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Kiruna/Olympic Dam-type iron, copper, uranium, gold, silver
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23.0
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Peralkaline rock-associated rare metals
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24.0
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Carbonatite-associated deposits
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25.0
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Diamond (Primary diamond deposits)
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25.1
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Kimberlite-hosted diamond
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26.0
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Mafic intrusion (Mafic intrusion-hosted titanium-ore)
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27.0
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Magmatic nickel-copper-platinum group elements
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27.2
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Magmatic platinum group elements
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28.0
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Mafic/ultramafic rocks and related minerals (Mafic/ultramafic-hosted chromite)
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*Main categories and selected sub-categories of Canadian mineral deposits types (Eckstrand et al. 1996) used to make a general classification of mineral occurrences in Greenland. Where categories are modified versions of the categories given by Eckstrand et al. (1996), the original names are given in parentheses.
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Resources
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Identified resources for the selected mineral occurrence.
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MO_Descrip
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A summary produced from available info on the selected mineral occurrence, in the form of a hyperlink to a pdf-file
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Last_mod
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Date of latest editing or modification of the selected mineral occurrence.
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