The Harms is a mine located in Mendocino county, California.
About the MRDS Data:
All mine locations were obtained from the USGS Mineral Resources Data System. The locations and other information in this database have not been verified for accuracy. It should be assumed that all mines are on private property.
Mine Info
Satelite View
MRDS mine locations are often very general, and in some cases are incorrect. Some mine remains have been covered or removed by modern industrial activity or by development of things like housing. The satellite view offers a quick glimpse as to whether the MRDS location corresponds to visible mine remains.
Harms MRDS details
Site Name
Primary: Harms
Commodity
Tertiary: Manganese
Location
State: California
County: Mendocino
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Leona Eddie
Production
Not available
Deposit
Record Type: Site
Operation Category: Prospect
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Pacific Border Province
Physiographic Section: California Coast Ranges
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Not available
Materials
Ore: Pyrolusite
Ore: Psilomelane
Comments
Comment (Production): NO PRODUCTION, IDLE. MAIN BED OF LOWER ZONE IS SILICEOUS BLACK OXIDE ORE CONTAINING MUCH WHITE AND RED CHERT, SOME MANGANIFEROUS CHERT, ESTIMATED AVERAGES ARE 15 TO 30% MANGANESE WITH HIGH GRADE AVERAGING 45%; AN UPPER ZONE AVERAGES 15 TO 30%.
Comment (Workings): TWO CUTS 15 AND 30 FT. LONG AT RIGHT ANGLES TO THE STRIKE, TWO OTHER CUTS 12 AND 30 FT.; SHALLOW PITS.
Comment (Geology): GEOL.DESC: TWO ORE BODIES INTERBEDDED IN CHERT LENS, WHICH IS OVERLAIN BY SANDSTONE AND SHALE, AND SURROUNDED BY GREENSTONE. THE CHERT IS CUT BY MANY SMALL FAULTS, AND STRIKES N 30 TO 35 W; AND DIPS 40 TO 55 N. E. INTO THE SLOPE. BEDS OF SILICEOUS ORE ARE OVERLAIN DISCONTINUOUSLY BY A THIN ZONE OF HIGH GRADE BLACK OXIDE ORE. ORE IS MAINLY PYROLUSITE WITH SOME PSILOMELANE AND OTHER OXIDES.
Comment (Location): LOCATED IN NE 1/4 SECTION 34 , UTM APPROX.
References
Reference (Deposit): D.O.M. BULL. 152, PP. 123-125
Reference (Deposit): CALIF. JOUR. MINES & GEOLOGY, V. 49, NO. 4, OCT. 1953, P. 386
California Gold
"Where to Find Gold in California" looks at the density of modern placer mining claims along with historical gold mining locations and mining district descriptions to determine areas of high gold discovery potential in California. Read more: Where to Find Gold in California.
