The Robie is a mine located in Mariposa 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.
Robie MRDS details
Site Name
Primary: Robie
Commodity
Tertiary: Manganese
Location
State: California
County: Mariposa
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: John L. Robie
Years: 1942 -
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: 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 30 PERCENT MANGANESE
Materials
Ore: Psilomelane
Comments
Comment (Workings): ONE SHALLOW PIT WAS THE ONLY WORKING IN 1942.
Comment (Geology): GEOL.DESC: MASSIVE TO THICK BEDDED WHITE CHERT PENETRATED BY BANDS AND STRINGERS OF PSILOMELANE. CHERT STRIKES N. 10 W., DIPPING CLOSE TO VERTICAL AND IS PART OF THE AMADOR GROUP, THE HUNTER VALLEY CHERT.
References
Reference (Deposit): CALIF. JOUR. MINES & GEOLOGY, V. 53, NOS. 1 & 2, JAN. - APRIL, 1957, P. 326
Reference (Deposit): DOM BULL. 152, 1950, P. 110
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.
