Lost River Mine

The Lost River Mine 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

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: Lost River Mine
Secondary: Orebodies: Cassiterite Dike, Ida Bell Dike
Secondary: Claims: Bald Eagle, Carry Gow, Collier, Engineer, Green, Jenny Lynn,
Secondary: Jupiter, Klondike, Lincoln, Mars, Rob Roy, Shon Rue, Surveryor,
Secondary: Three Prospectors, Triangle.

Commodity

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

Location

State: Alaska

Land Status

Not available

Holdings

Not available

Workings

Type: Surface/Underground

Ownership

Not available

Production

Not available

Deposit

Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Year First Production: 1913
Year Last Production: 1955
Discovery Year: 1903
Years of Production:
Organization:
Significant: N

Physiography

Not available

Mineral Deposit Model

Not available

Orebody

Form: CONICAL

Structure

Type: R
Description: S-Dipping Thrusts Cut By Major Normal Faults; Pre-Intrusive

Type: L
Description: 3 N-S Vertical Faults, 2 E-W Faults From Small Graben Over Granite Cupola

Alterations

Alteration Type: L
Alteration Text: Hydrous And Chlorite-Carb. Retrograde Alt. Of Limestone; Greisenization, Sericitization And Kaolinization Of Igneous Rx.

Rocks

Not available

Analytical Data

Analytical Data: SAMPLES OF ORE FROM CASSITERITE DIKE AVERAGED 0.07% BEO, USBM OFR 1-65, P. 5-6.
Analytical Data: "REPRESENTATIVE" ORE FROM RHYOLITE PORPHYRY DIKES: 1.02% SN, 0.29% WO3, LIMESTONE: 0.12-0.13% BEO (AVG. OF 1243 FT OF DRILL CORE)
Analytical Data: USBM DATA: 18 SAMPLES CONTAINED FROM 0.22% SN-3.33% SN, (AVG. 1.16%), AND FROM 0.07% TO 2.23% TUNGSTATE (AVG. 0.58%(, AVG. WIDTH: 8.3 FT

Materials

Ore: Bismuthinite
Ore: Beryl
Ore: Stannite
Ore: Wolframite
Ore: Euclase
Ore: Phenacite
Ore: Bertrandite
Ore: Galena
Ore: Sphalerite
Ore: Chalcopyrite
Ore: Stibnite
Ore: Scheelite
Ore: Molybdenite
Ore: Cassiterite
Gangue: Garnet
Gangue: Pyrolusite
Gangue: Magnetite
Gangue: Ilmenite
Gangue: Hematite
Gangue: Epidote
Gangue: Diaspore
Gangue: Rutile
Gangue: Topaz
Gangue: Tourmaline
Gangue: Quartz
Gangue: Plagioclase
Gangue: Idocrase
Gangue: Sericite
Gangue: Kaolinite
Gangue: Pyrite
Gangue: Pyrrhotite
Unknown: Fluorite

Comments

Comment (Production): MILL RECORDS SHOWED 51,000 ST OF ORE CONTAINING 1.13% SN PRODUCED 687 ST CONC. AVERAGING 52% SN; RECOVERY: 60.8%; SMELTER RETURNS SHOW MILL WEIGHT FIGURES TO BE HIGH, USBM IC 7871, P. 2.

Comment (Development): ACTIVE YEARS: 1903-1920, 1928-29, 1951-55; EXTENSIVELY EXPLORED AND DRILLED BY USBM IN 1942-44 AND 1951-52; MOST DEVELOPMENT IN 1951-55 WHEN MINED BY U.S. TIN CORP. WITH DPA FUNDING CONCURRENT WITH DMEA EXPLORATION PROJECT; 65,000 FT OF DD-HOLES COMPLETED AS OF 1972; ACTIVE EXPL. IN 1983.

Comment (Location): MAIN HAULAGE ADIT (NEW NO. 3 ADIT), USGS BULLETIN 1129, PLATES 1 AND 2. LAND STATUS VALUE CALCULATED 6-94 USING GIS OVERLAY ANALYSIS WITH BLM 1:2,500,000 SCALE OWNERSHIP STATUS MAP (1991).

Comment (Deposit): MINERALOGICALLY COMPLEX SN-W-F-BE DEPOSIT CONSISTING OF (1) CASSITERITE, WOLFRAMITE AND BASE-METAL SULFIDES DISSEMINATED ALONG GREISENIZED RHYOLITE PORPHYRY DIKES, (2) CASSITERITE AND WOLFRAMITE-BEARING QUARTZ-TOPAZ AND MICA-RICH GREISENS IN GRANITE CUPOLA, (3) STOCKWORKS OF SN-BEARING GARNET-IDOCRASE SKARNS, AND (4) BERYLLIUM MINERALIZATION HOSTED BY FLUORITE-MICA VEINS; NO VEINS EXTEND MORE THAN 300 M FROM STOCK CONTACT; MAIN ORE BODY: CASSITERITE DIKE, 5-20 FT (AVE. 12 FT), SN-BEARING OVER 2200 FT STRIKE LENGTH, VERTICAL RANGE OF 500 FT, STRIKE AND DIP LISTED ABOVE.

Comment (Workings): TOTAL-ALL OPRATORS: 1903-1955 (IN LINEAR FT) HAND DUG TRENCHES: 2085 FT, DOZER TRENCHES: 5900 FT; SURFACE DD-HOLES: 8899 FT (USBM); UNDERGROUND DD-HOLES: 1984 FT (DMEA); LONG HOLE PERCUSSION DRILLING: 1795 FT (DMEA); EXPLOR. DRIFTS AND CROSSCUTS: 4384 FT; RAISES: 275 FT; SHAFTS/WINZES: 820 FT; ALL STOPES ABOVE 300 FT ELEV.

Comment (Reserve-Resource): CAMP CR. AND OTHER NEARBY DEPOSITS PROBABLY INCLUDED IN ESTIMATES OF FLUORITE-BE ORE

Comment (Reserve-Resource): LINE 1 PROBABLY REFERS TO LOST RI. AREA AS A WHOLE, INCLUDING CAMP CR. F-BE AND OTHER NEARBY DEPOSITS

Comment (Geology): CUPOLA OF BIOTITE GRANITE AND OLDER RHYOLITIC QUARTZ PORPHYRY AND LAMPROPHYRE DIKES INTRUDED MASSIVE ORD. LIMESTONE; GRANITE EXPOSED IN UNDERGROUND WORKINGS [365 LEVEL]; CRUDELY CONICAL AREA OF MARMARIZED LIMESTONE ABOVE CUPOLA CUT BY GARNETIFEROUS SKARNS AND STOCKWORKS WITH VEIN DENSITY FROM 5% TO GREATER THAN 30%; GREISENS FORMED IN CUPOLA AND RHYOLITIE PORPHYRIES APPROX. CONTEMPORANEOUS WITH HYDROUS ALTERATION OF SKARNS AND STOCKWORKS IN LIMESTONE.

Comment (Deposit): DETAILED INFO ON ALTERATION AND MINERALOGY: ECON. GEOLOGY, V. 77, NO. 4, P. 1033-1052; MINE WORKINGS AND ASSAY MAPS: USGS BULLETIN 1129, USBM RI 3902; DD-HOLE DATA: USBM OFR 2-65, MINING/BENEFICIATION DATA: USBM IC 7871. ; INFO.SRC : 1 PUB LIT

References

Reference (Production): USGS BULLETIN 1287, P. 62.

Reference (Reserve-Resource): USGS OFR 78-1-C, P. 13-14

Reference (Deposit): ECON. GEOL., V. 77, NO. 4, P. 1033-1052.

Reference (Deposit): GSA BULLETIN, V. 94, NO. 6, P. 769-770, 778.

Reference (Deposit): USGS OFR 77-796-B, P. 6, LOC. 37.

Reference (Deposit): USGS BULLETIN 1287, P. 45, 62-63, 74-75, 81-84, 93.

Reference (Deposit): USBM OFR 2-65.

Reference (Deposit): USBM OFR 1-65

Reference (Deposit): USGS BULLETIN 1129

Reference (Deposit): USBM IC-7871.

Reference (Deposit): USBM RI 3902.

Reference (Deposit): USGS BULLETIN 733, P. 51-74.

Reference (Other Database): BAG-MF-426-08

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