Mine detail: Horse Heaven Mine

Previously called ''

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Location

Lat / long:

44.71483, -120.50555

Resource(M)

Primary:	Mercury
Tertiary:	Antimony, Arsenic
Ore:	Cinnabar, Marcasite, Mercury, Metacinnabar, Stibnite
Gangue:	Gypsum, Montmorillonite
Orebody form:	IRREGULAR
Discovery year:	1933

Production

Operation type:	Unknown
Production size:	Medium
Development status:	Past Producer
First production started:	1934

Geology

Host rock:	Clarno Formation
Host type:	Rhyolite
Associated type:	Rhyolite,Andesite
Structure:	Autobrecciated Biotite Rhyolite Plug
Tectonic:	Continental Magmatic Arc
Alteration processes:	Andesite Altered To Clay And Carbonates

References

MRDS	M060839
DEP	10103898
Reference	{Deposit:: WATERS, A.C., BROWN, R.E., COMPTON, R.R., STAPLES, L.W., WALKER, G.W., AND WILLIAMS, HOWELL, 1951, QUICKSILVER DEPOSITS OF THE HORSE HEAVEN MINING DISTRICT, OREGON: USGS BULL. 969-E, P. 106-}{Deposit:: BROOKS, H.C., 1963, QUICKSILVER IN OREGON: OREGON DEPT. GEOL. AND MIN. IND. BULL. 55, P. 119-121}{Deposit:: SCHUETTE, C.N. 1938, QUICKSILVER IN OREGON: OREGON DEPT. GEOL. AND MIN. IND. BULL. 4, P. 89-97}{Deposit:: 1942 GEOLMAP WATERS AND OTHERS, USGS BULL. 969-E}{Production:: BROOKS, H.C. 1963, P. 119}
Reporter	Puffett, Willard P., Bradley, Robin (Walker, George W.), Gray, Jerry J.