The Kougarok Deposit is a tin mine located in Alaska.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
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Kougarok Deposit MRDS details
Site Name
Primary: Kougarok Deposit
Commodity
Primary: Tin
Secondary: Tantalum
Secondary: Niobium (Columbium)
Tertiary: Copper
Location
State: Alaska
District: Serpentine
Land Status
Land ownership: State
Note: the land ownership field only identifies whether the area the mine is in is generally on public lands like Forest Service or BLM land, or if it is in an area that is generally private property. It does not definitively identify property status, nor does it indicate claim status or whether an area is open to prospecting. Always respect private property.
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Anaconda Minerals Co. (Division Of Atlantic Richfield)
Years: 1986 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Discovery Year: 1979
Years of Production:
Organization:
Significant: N
Physiography
Not available
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Alteration Type: L
Alteration Text: Alteration Assemblages (In Order Of Increasing Intensity) Sericite-Tourmaline, Zinnwaldite-Sericite, Quartz-Tourmaline Greisen.
Rocks
Not available
Analytical Data
Analytical Data: GSA ABSTRACTS WITH PROGRAMS, V. 17, NO. 7, P. 694.
Analytical Data: 0.01-0.05 NB
Analytical Data: 0.01-0.05% TA
Analytical Data: 0.1-15% SN, AVG. 0.5% SN
Materials
Ore: Chalcopyrite
Ore: Cassiterite
Gangue: Topaz
Gangue: Quartz
Gangue: Tourmaline
Gangue: Fluorite
Gangue: Axinite
Gangue: Chlorite
Comments
Comment (Deposit): CASSITERITE DISSEMINATED IN QUARTZ-TOURMALINE-TOPAZ-FLUORITE-GREISEN (1) ALONG THE ROOF ZONE OF LATE STAGE, SUBHORIZONTAL, SHEET-LIKE BODY OF ZINNWALDITE GRANITE, (2) IN AND AROUND TWO STEEPLY DIPPING CYLINDRICAL PIPES OF GREISENIZED GRANITE, (3) IN GREISENIZED DIKES, AND (4) STOCKWORK VEINLETS IN SCHIST; TANTALITE-COLUMBITE OCCURS AS DISSEMINATED GRAINS IN ZINNWALDITE GRANITE LATERAL TO SN-BEARING GREISEN IN ROOF ZONE; QUARTZ, QUARTZ-TOURMALINE, AND TOURMALINE STRINGERS IN SCHIST ABOVE GRANITIC INTRUSIVE COMPLEX CONTAIN CASSITERITE, PYRRHOTITE, ARSENOPYRITE, AND CHALCOPYRITE.
Comment (Workings): 9200 M OF DIAMOND DRILL HOLES, 1100 M OF BULLDOZER TRENCHING WERE COMPLETED BY 1983.
Comment (Geology): ALTERATION INTENSITY (DEGREE OF DESTRUCTION OF IGNEOUS TEXTURE), SN GRADE AND TA-NB CONTENT INCREASE UPWARD IN ZINNWALDITE GRANITE BODY. GRANITIC INTRUSIVE COMPLEX CONSISTING OF (1) PORPHYRITIC BIOTITE GRANITE, (2) FINE GRAINED APLITIC GRANITE, (3) FELDSPAR-QUARTZ PORPHYRY, (4) EQUIGRANULAR GRANITE, AND (5) EQUIGRANULAR ZINNWALDITE GRANITE. ZINNWALDITE GRANITE INTRUDED INTO PELITIC SCHIST.
Comment (Location): ECON. GEO., V. 81, NO. 7, FIG. 2, P. 1778. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).
Comment (Development): EXPLORATION ACTIVITY: 1979-1983, DRILLING TRENCHING, GRAVITY AND GEOCHEM. SURVEYS, GEOLOGIC MAPPING; ASSESSMENT WORK: 1986.
References
Reference (Deposit): ECON. GEO., V. 81, NO. 7, P. 1775-1794.
Reference (Deposit): GSA ABSTRACTS WITH PROGRAMS, V. 17, NO. 7, P. 694.
Reference (Deposit): ADGGS SR 40, P. 38.
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