Mine detail: Ear Mountain Deposit

Previously called 'Winfield ShaftPatented Claims: Surprise, Chloride Fraction, Granite'

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Location

Lat / long:

65.94291, -166.20901

Resource(M)

Primary:	Tin
Secondary:	Copper, Uranium, Zinc, Lead
Tertiary:	Gold, Silver, Antimony, Tungsten
Ore:	Cassiterite, Chalcocite, Chalcopyrite, Cinnabar, Galena, Malachite, Scheelite, Sphalerite, Stannite, Stibnite
Discovery year:	1904

Production

Operation type:	Unknown
Production size:	None
Development status:	Occurrence

Geology

Host rock:	Ear Mountain Stock;;;
Host type:	Schist,Limestone
Tectonic:	Intermediate Depth Sn-Granite System
Alteration processes:	Calc-Silicate Alteration: Early Pyroxene-Plag.-Scapolite Hornfels, Later Stage Fine Grained Skarn With Subequal Pyroxene-Idocrase-Garnet, Cross-Cut By Coarse-Grained Tourmaline-Garnet-Quartz-Sulfide Adjacent To Tourmaline And Fluorite-Bearing Granite.

References

MRDS	A016024
DEP	10094095
Reference	{Deposit:: USGS BULLETIN 358, P. 9, 25-32.}{Deposit:: USGS BULLETIN 733, P. 103-111.}{Deposit:: USGS BULLETIN 1024-C, P. 65-70, 86-92.}{Deposit:: USBM RI 5493, P. 2-3, 8, 11, 13, 17, 19, 21, 33-52.}{Deposit:: USGS CIRCULAR 479, P. 14-15.}{Deposit:: USGS OFR 77-796-B, P. 7, LOC. 49, 52.}{Deposit:: GSA ABSTRACTS WITH PROGRAMS, V. 19, NO. 6, P. 374.}{Deposit:: GSA ABSTRACTS WITH PROGRAMS, V. 19, NO. 6, P. 368.}{Deposit:: USGS BULLETIN 1786 (IN PRESS), LOC. SP4.}{Deposit:: GSA BULLETIN, V. 94, NO. 6, P. 769-774.}{Other Database:: BAG-MF-426-14}
Reporter	Leonard, Kenneth R. (Huber, Donald F.), Mosier, Dan