Mine detail: Shaft Northwest of Twelvemile Knoll

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Location:	Beaver County, Utah, United States, North America
Lat / long:	38.29552, -113.17274
dep_id:	10011241
mrds_id:	D005778
Commodity type:	metallic
Major mineral:	Lead, Zinc
Minor mineral:	Silver
Operation type:	Unknown
Deposit type:	Replacement
Production size:	Small ammount of material produced
Development status:	Past Producer
ore:	Jarosite, Plumbojarosite, Smithsonite
orebody_fm:	IRREGULAR VEIN
work_type:	Underground
ore_ctrl:	Lateral Replacement Of Favorable Limestone Beds Adjacent To Cross Cutting Fissures
Reporter:	Everts, Michael L., Shubat, Michael A.
hrock_unit:	Kaibab-Plympton Formation;Toroweap Formation
hrock_type:	Limestone,Chert
arock_unit:	Intrusives Undifferientiated
arock_type:	Quartz Monzonite,Diorite
Structure:	Colorado Plateau/Basin & Range Transition Zone, Cordilleran Hingeline, Eastward Dipping Homocline (Star Range) Believed To Be Part Of An Eastward Moving Thrust Plate.
tectonic:	Miogeosyncline
References:	Deposit:: ABOU-ZIED, S, AND WHELAN, J, A, 1973, GEOLOGY AND MINERALOGY OF THE MILFORD FLAT QUADRANGLE, STAR DISTRICT, BEAVER CO, UT, UGMS SPEC S 46 Deposit:: GEOLOGY OF THE MILFORD AREA, 1973, UTAH GEOL ASSOC PUBL 3. Deposit:: PERRY, L, I, 1976, LEAD AND ZINC IN UTAH: UTAH GEOL & MIN SURVEY OPEN FILE REPORT #22. Deposit:: BAER, J L, 1962, GEOL OF THE STAR RANGE, BEAVER COUNTY, UTAH: B Y U STUDIES, V 9, PART 2, P 29-52. Deposit:: 1913 RECON BUTLER, B S, USGS PP #80 Deposit:: 1920 RECON BUTLER, B S, USGS PP #111 Deposit:: 1962 GEOLMAP BAER, J L, BYU STUDIES V 9 Deposit:: BAETCKE, G B, 1969, STRATIGRAPHY OF THE STAR RANGE AND RECONNAISSANCE STUDY OF THREE SELECTED MINES: UNIV OF UTAH P HD THESIS. Deposit:: 1963 COMPILE HEYL, A V, USGS BULL 1135-B Deposit:: 1973 COMPILE UGA PUBL #3 Deposit:: 1973 GEOLMAP UGMS SS #46 Production:: EVERTS, M L, 1979, ON SITE INVESTIGATIONS: UT GEOL AND MIN SUR