Bessie-Maple Prospect

The Bessie-Maple Prospect is a tin, tungsten, beryllium, 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

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Site Name

Primary: Bessie-Maple Prospect
Secondary: Southern Cross

Commodity

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

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

Type: R
Description: Rapid River Thrust Fault

Alterations

Not available

Rocks

Not available

Analytical Data

Analytical Data: 3M INTERCEPT OF DD-HOLE: 0.18% SN, 0.11% PB, 4.9% ZN, 0.15% CU, AND 46 G/MT AG
Analytical Data: USGS OFR 78-1-C, P. 14
Analytical Data: ASSAYS OF THREE SAMPLES (MADE BY OWNERS): TR. - 0.03 OZ AU, 4.2-25.6 OZ/TON AG, 0.5-9.1% PB, TR.-3.2% W03, 0.3-1.45% SN, USGS BULLETIN 733, P. 80.
Analytical Data: BULK SAMPLE CONTAINED 0.4% BE AND 28.6% F, USGS CIRCULAR 479, TABLE 5, P. 8

Materials

Ore: Stannite
Ore: Wolframite
Ore: Chalcopyrite
Ore: Sphalerite
Ore: Galena
Ore: Chrysoberyl
Ore: Scheelite
Ore: Stibnite
Gangue: Pyrite
Gangue: Diaspore
Gangue: Topaz
Gangue: Tourmaline
Unknown: Fluorite

Comments

Comment (Location): USGS OFR 250, FIG. 2; USBM OFR 7-65, FIG. 3; USGS BULLETIN 1287, PLATE 5; ALL SHOW PROSPECT AND DD-HOLE LOCATIONS LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Commodity): SCHEELITE FOUND IN DRILL CORE

Comment (Workings): 150-FT ADDIT AND 200 FT ADIT ON OPPOSITE SLOPES OF SMALL SADDLE; SEVERAL TRENCHES; 3 DD-HOLES TOT. 399 LINEAR FT.

Comment (Geology): ARGILLACEOUS LIMESTONE OVERRIDDEN BY LIMESTONE AND SHALE [UPPER PLATE OF RAPID R. THRUST]; CUT BY LAMPROPHYRE AND QUARTZ PORPHYRY DIKES.

Comment (Deposit): SULFIDE-TINE DEPOSITS SANDWICHGED BETWEEN FLUORITE-BE MINERALIZATON. ; INFO.SRC : 1 PUB LIT

Comment (Development): DEVELOPMENT BEGAN BEFORE 1920; DRILLED BY USBM IN 1964.

Comment (Deposit): (1) 1500 FT LONG ZONE OF KAOLINIZED DIKES AND BRECCIATED LIMESTONE CONTAINING VEINLETS AND DISSEMINATIONS OF GALENA, PYRITE, STANNITE, CHALCOPYRITE, ARSENOPYRITE, WOLFRAMITE, STIBNITE, AND SPHALERITE ASSOCIATED WITH TOURMALINE +/- TOPAZ +/- FLUORITE; (2) WIDE BAND OF LOW GRADE FLUORITE-BERYLLIUM REPLACEMENT OF LIMESTONE ALONG RAPID RIVER THRUST FAULT; ONE DD-HOLE INTERCEPTED THE FOLLOWING SECTION: 17 FT OF FRACTURED DOLOMITE; 16 FT OF FLUORITE WITH CHRYSOBERYL AND DIASPORE; 1 FT OF NEARLY SOLID SULFIDES THAT INCLUDE STANNITE, PYRITE, SPHALERITE, ARSENOPYRITE AND GALENA; DOLOMITE THAT CONTAINS FLUORITE AND SULFIDES ALONG MARGIN OF LAMPROPHYRE DIKE; FLUORITE-BE ROCK; AND DOLOMITE.

References

Reference (Deposit): USGS BULLETIN 1287, P. 64, 78-79, 93.

Reference (Deposit): USGS OFR 77-796-B, P. 6, LOC. 30.

Reference (Deposit): USGS OFR 78-1C, P. 14.

Reference (Other Database): BAG-MF-426-06

Reference (Deposit): USGS BULLETIN 733, P. 78-80.

Reference (Deposit): USBM IC 7871, P. 9.

Reference (Deposit): USGS CIRCULAR 479, P. 5, 8-9.

Reference (Deposit): USBM OFR 7-65, P. 13, 16, 63-70, 77-78, 90-92.

Reference (Deposit): USGS OFR 250, P. 33-38.

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