Mine detail: Defrees

Previously called 'De Frieze'

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Location

Lat / long:

41.3199, -116.22537

Resource(M)

Primary:	Silver
Secondary:	Gold
Ore:	Silver
Orebody form:	TABULAR
Discovery year:	1890

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Past Producer
First production started:	1890

Geology

Host type:	Andesite
Structure:	E-Striking Faults Conjugate To A Set Of Nw-Striking Faults
Alteration processes:	Inner Potassic Zone; Outer Early Propylitic Zone

References

MRDS	M233388
DEP	10045612
Reference	{Deposit:: SMITH, R.M., 1976, USGS OFR 76-56}{Deposit:: NOLAN, T.B., 1936, NBMG BULL 25}{Deposit:: EMMONS, W.H., 1910, USGS BULL 408}{Production:: NOLAN, (1936) P. 30}
Reporter	Kirkham, Richard A.