Alaska
Producer

Lost River Mine

Alaska, United States
TinTungstenFluorine-FluoriteBerylliumLeadZincCopperAntimonyBismuthMolybdenum
⌖ Show on mapUSGS source ↗
Commodities
PrimaryTin
SecondaryTungsten
TertiaryFluorine-Fluorite, Beryllium, Lead, Zinc, Copper, Antimony, Bismuth, Molybdenum
Commodity typeB
Deposit
Deposit sizeS
WorkingsSurface/Underground
Orebody formCONICAL
Ore controlAll Mineralization Within 300 M Of Granite Contact
Materials
Ore mineralsBertrandite, Beryl, Bismuthinite, Cassiterite, Chalcopyrite, Euclase, Galena, Molybdenite, Phenacite, Scheelite, Sphalerite, Stannite, Stibnite, Wolframite
GangueDiaspore, Epidote, Garnet, Hematite, Idocrase, Ilmenite, Kaolinite, Magnetite, Plagioclase, Pyrite, Pyrolusite, Pyrrhotite, Quartz, Rutile, Sericite, Topaz, Tourmaline
Other materialsFluorite
Geology
Host rockLimestone · Port Clarence Limestone;Port Clarence Limestone;;;
StructureS-Dipping Thrusts Cut By Major Normal Faults; Pre-Intrusive, 3 N-S Vertical Faults, 2 E-W Faults From Small Graben Over Granite Cupola
Tectonic settingPluton Emplaced At Depth Of 2-5 Km In Stable Cratonic Setting
AlterationHydrous And Chlorite-Carb. Retrograde Alt. Of Limestone; Greisenization, Sericitization And Kaolinization Of Igneous Rx.
Economic & production
Development statusProducer
First production1913
Last production1955
Discovery year1903
Identification
Deposit ID10106585
MRDS IDA016009
Alternate namesOrebodies: Cassiterite Dike, Ida Bell Dike, Claims: Bald Eagle, Carry Gow, Collier, Engineer, Green, Jenny Lynn,, Jupiter, Klondike, Lincoln, Mars, Rob Roy, Shon Rue, Surveryor,, Three Prospectors, Triangle.
RegionNA
Data scoreB
Coordinates65.47483, -167.1584
References
ECON. GEOL., V. 77, NO. 4, P. 1033-1052.GSA BULLETIN, V. 94, NO. 6, P. 769-770, 778.USGS OFR 77-796-B, P. 6, LOC. 37.USGS BULLETIN 1287, P. 45, 62-63, 74-75, 81-84, 93.USBM OFR 2-65.USBM OFR 1-65USGS BULLETIN 1129USBM IC-7871.USBM RI 3902.USGS BULLETIN 733, P. 51-74.BAG-MF-426-08USGS BULLETIN 1287, P. 62.USGS OFR 78-1-C, P. 13-14