Mine detail: Blue Bull Mine

Previously called 'Blue BullHat Claims'

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Location

Lat / long:

37.71467, -117.20285

Resource(M)

Primary:	Gold, Silver
Secondary:	Copper
Ore:	Famatinite
Gangue:	Alunite, Kaolinite, Limonite, Quartz

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer

Geology

Host type:	Dacite,Andesite
Associated rock:	Milltown Andesite
Associated type:	Dacite,Andesite
Structure:	Caldera Ring Fracture Zone
Alteration processes:	Silicification Along Nw-Dipping Fissures; Kaolinization

References

MRDS	M241901
DEP	10046702
Reference	{Deposit:: RANSOME, F.L., 1909, USGS PP 66, P. 243-244}{Deposit:: NBMG REPORT 33, P. 77-86}{Production:: RANSOME, F.L., 1909, P. 244}
Reporter	La Pointe, D.D. (Tingley, J.V.)