The Pettigrew - Stafford Lease is a mine located in Placer 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.
Pettigrew - Stafford Lease MRDS details
Site Name
Primary: Pettigrew - Stafford Lease
Secondary: Gray Lease
Commodity
Tertiary: Manganese
Location
State: California
County: Placer
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Not available
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: AVERAGE GRADE 35 TO 40 PERCENT MANGANESE
Materials
Ore: Pyrolusite
Ore: Psilomelane
Ore: Manganite
Comments
Comment (Location): LOCATED IN NE 1/4 SECTION 29
Comment (Geology): GEOL.DESC: POCKETS OF MANGANESE OXIDE IN MASSIVE, YELLOW TO WHITE CHERT AND META CHERT, PARTLY RECRYSTALLIZED TO FINE GRAINED QUARTZITE AND CUT BY 1 TO 6 INCH QUARTZ VEINS. THE CHERT IS ENCLOSED IN BUFF TO GRAY SLATE OR PHYLLITE. POCKETS OF OXIDE ARE A FEW INCHES TO A FOOT THICK. MOST ORE IS POROUS PYROLUSITE, SOME PSILOMELANE, AND MANGANITE (?). QUARTZ VEINS TREND N 55 W AND DIP 20 TO 25 SW, AND CONTAIN VUGS WITH CRYSTALS UP TO AN INCH LONG AND 1/2 INCH THICK.
References
Reference (Deposit): D.O.M. BULL. 152 1950 PP 170 - 171
Reference (Deposit): D.O.M. BULL. 125 1943 P. 150 , 65
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.
