The Martinez is a mine located in El Dorado 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.
Martinez MRDS details
Site Name
Primary: Martinez
Commodity
Tertiary: Manganese
Location
State: California
County: El Dorado
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Martinez Gold Mines Co.
Production
Not available
Deposit
Record Type: Site
Operation Category: Occurrence
Operation Type: Unknown
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Pacific Mountain System
Physiographic Province: Cascade-Sierra Mountains
Physiographic Section: Sierra Nevada
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Not available
Analytical Data
Analytical Data: ORE GRADE 20 TO 30 PERCENT MANGANESE
Materials
Ore: Rhodonite
Ore: Psilomelane
Ore: Pyrolusite
Comments
Comment (Location): LOCATED IN NE 1/4 SECTION 13
Comment (Production): UNDEVELOPED.
Comment (Workings): SMALL DEPOSITS.
Comment (Geology): GEOL.DESC: RHODONITE PARTIALLY ALTERED TO PSILOMELANE AND PYROLUSITE IN LENSES CUT BY NUMEROUS QUARTZ VEINS ( 3 TO 6 IN. THICK ). TWO LENSES ARE EXPOSED AT SITE SURROUNDED WITH SERICITE SCHIST; BEING 3 FT. THICK, 10 AND 5 FT. LONG. IRON OXIDES ARE ASSOCIATED WITH THE MANGANESE IN ONE LENS. ORE RUNS 20 TO 30 % MN AND IS VERY HIGH IN SILICA.
Comment (Deposit): COUNTRY ROCK IS CHERT AND SCHIST.
References
Reference (Deposit): CALIF. JOUR. MINES & GEOL. V. 52, NO. 4, P. 575, PL. 10
Reference (Deposit): DOM BULL. 152, P. 52
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.
