Tin Creek Deposit

The Tin Creek Deposit is a beryllium, tin, and fluorine-fluorite 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

Satelite View

MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.

Site Name

Primary: Tin Creek Deposit

Commodity

Primary: Beryllium
Primary: Tin
Primary: Fluorine-Fluorite
Secondary: Lead
Secondary: Zinc
Tertiary: Tungsten
Tertiary: Molybdenum
Tertiary: Copper

Location

State: Alaska

Land Status

Not available

Holdings

Not available

Workings

Not available

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Deposit Size: S

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Not available

Structure

Not available

Alterations

Not available

Rocks

Name: Rhyolite
Role: Associated
Age Type: Associated Rock
Age Young: Late Cretaceous

Name: Rhyolite
Role: Associated
Age Type: Host Rock Unit
Age Young: Late Ordovician

Name: Rhyolite
Role: Associated
Age Type: Host Rock
Age Young: Late Ordovician

Analytical Data

Analytical Data: SKARNS GENERALLY LOW IN BE, BUT LOCALLY CONTAIN UP TO 0.45% BE, PRINCIPALLY IN HELVITE
Analytical Data: GREISEN CONTAINS UP TO 0.3% SN LOCALLY

Materials

Ore: Cassiterite
Ore: Stannite
Ore: Molybdenite
Ore: Chrysoberyl
Ore: Galena
Ore: Chalcopyrite
Ore: Marmatite
Ore: Fluorite
Ore: Helvite
Ore: Euclase
Gangue: Topaz
Gangue: Magnetite
Gangue: Mica
Gangue: Garnet
Gangue: Plagioclase
Gangue: Hornblende
Gangue: Idocrase
Gangue: Pyrite
Gangue: Diaspore
Unknown: Scheelite

Comments

Comment (Deposit): THREE TYPES OF MINERALIZATION ASSOCIATED WITH SMALL BIOTITE GRANITE STOCK: (1) SEVERAL 1000 SQ FT AREA OF QUARTZ-TOPAZ GREISEN AT NE END OF STOCK CONTAINS CASSITERITE, PYRITE, ARSENOPYRITE, MARMATITE, STANNITE, MOLYBDENITE AND GALENA; (2) SKARNS: FLUORITE (85%)-MAGNETITE (15%), "RIBBON ROCK" ASSOCIATED WITH EQUIGRANULAR GRANITE; REPLACED BY COARSE-GRAINED IDOCRASE (55-90%)-GARNET (10-40%) - FLUORITE (0-2%) - SULFIDE (0-2%), SKARN ADJACENT TO V. FINE GRAINED EQUIVGRANULAR GRANITE; SULFIDES PRESENT INCLUDE: GALENA, CERUSSITE, ARSENOPYRITE, CHALCOPYRITE, CASSITERITE AND HELVITE; (3) VEINS AND VEINLETS OF FLUORITE-DIASPORE-CHRYSOBERYL-MICA IN OR NEAR RADIAL FRACTURES IN LIMESTONE SOUTH OF STOCK AND ALONG MARGINS OF DIKES; EUCLASE PRESENT.

Comment (Location): APPROX. CENTER OF 0.2 SQ. KM. STOCK EXPOSED IN TIN CR. DRAINAGE; USGS BULLETIN 1287, PLATE 6; USGS BULLETIN 1129, PLATE 1. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Workings): NUMEROUS PITS AND TRENCHES; ESPECIALLY IN LS SOUTH OF STOCK (N SLOPE OF TIN CR. VALLEY)

Comment (Geology): NE-TRENDING, 3500 X 1500 FT STOCK IN MARMARIZED LIMESTONE, LOCALLY DEVELOPED TACTITE ALONG CONTACT; CROSSCUT BY RHYOLITE PORPHYRY AND LAMPROPHYRE DIKES.

Comment (Deposit): SEE ALSO: LOST RIVER MINE ; INFO.SRC : 1 PUB LIT

References

Reference (Deposit): USGS CIRCULAR 479, P. 2-4, 9, 11-13.

Reference (Deposit): USGS BULLETIN 1129, P. 8, 10, 56-57.

Reference (Deposit): USGS BULLETIN 1287, P. 79-80.

Reference (Deposit): USGS PROF. PAPER 933, P. 33-34.

Reference (Deposit): GSA ABSTRACTS WITH PROGRAMS, V. 19, NO. 6, P. 368.

Reference (Deposit): GSA BULLETIN, V. 94, NO. 6, P. 770-772.

Reference (Deposit): USGS OFR 77-796-B, P. 6, LOC. 34.

Reference (Other Database): BAG-MF-426-10

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