Mine detail: Mashel River Prospect

Previously called ''

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Location

Lat / long:

46.86648, -122.10092

Resource(M)

Primary:	Mercury
Secondary:	Silver
Tertiary:	Arsenic, Antimony
Ore:	Cinnabar, Orpiment, Realgar, Stibnite
Gangue:	Limonite, Quartz
Orebody form:	VEIN, TABULAR MASSES

Production

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

Geology

Host type:	Andesite
Structure:	Ne Trending Quartz Vein
Tectonic:	Cascade Volcanic Arc
Alteration processes:	Andesite Adjacent To Quartz Vein Is Bleached And Locally Contains Abundant Fine-Grained Pyrite

References

MRDS	M060149
DEP	10042383
Reference	{Deposit:: DANIELS, JOSEPH, 1914, THE COAL FIELDS OF PIERCE COUNTY: WASHINGTON GEOLOGICAL SURVEY BULLETIN 10, 146 P.}{Deposit:: HUNTTING, M.T., 1956, INVENTORY OF WASHINGTON MINERALS - PART II, METALLIC MINERALS: WASHINGTON DIVISION OF MINES AND GEOLOGY BULLETIN 37, V. 1, P. 266.}{Deposit:: U.S. BUREAU OF MINES, 1965, MERCURY IN WASHINGTON, IN MERCURY POTENTIAL OF THE UNITED STATES: U.S. BUREAU OF MINES INFORMATION CIRCULAR 8252, P. 365.}
Reporter	Puffett, Willard P., Peterson, Jocelyn A.