The Newman Estacia Property is a manganese mine located in Alameda county, California at an elevation of 3,150 feet.
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
Elevation: 3,150 Feet (960 Meters)
Commodity: Manganese
Lat, Long: 37.56806, -121.63889
Map: View on Google Maps
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.
Newman Estacia Property MRDS details
Site Name
Primary: Newman Estacia Property
Commodity
Primary: Manganese
Location
State: California
County: Alameda
Land Status
Not available
Holdings
Not available
Workings
Not available
Ownership
Owner Name: Mabel Newman
Years: 1950 -
Production
Not available
Deposit
Record Type: Site
Operation Category: Producer
Operation Type: Unknown
Discovery Year: 1880
Years of Production:
Organization:
Significant: N
Deposit Size: M
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
Name: Shale
Role: Host
Age Type: Host Rock
Age Young: Late Cretaceous
Name: Shale
Role: Host
Age Type: Host Rock Unit
Age Young: Late Cretaceous
Analytical Data
Not available
Materials
Not available
Comments
Comment (Geology): ORE HOSTED IN FRANCISCAN COMPLEX - L. TO L. ; GEOL.DESC: MANGANESE ORE AND HEAVY STAINING IN BEDDED CHERTS. ORE MOSTLY SILICEOUS, BUT SMALL POCKETS OF MANGANESE OXIDES WITH OR WITHOUT NUMEROUS VEINS OF QUARTZ ARE FOUND. BOG MANGANESE IS ASSOCIATED WITH A SPRING IN THE AREA.
Comment (Location): LOCATED IN W 1/2 OF SW 1/4 SECTION 22, UTM APPROX.
Comment (Production): LARGE BODY HAS BEEN WORKED SINCE 1880, FROM TIME TO TIME. PRODUCTION IS 350 TONS. THE MAIN BODY IS A MASSIVE SILICEOUS BED ENCLOSED IN AND CONFORMABLE TO, WELL-BEDDED GREEN RADIOLARIAN CHERT AND SHALE. THE DIP VARIES FROM 10 DEG TO 30 DEG SW; THE THICKNESS OF THE ORE BED VARIES FROM 2-3FT,WITH AVE.OF 2.5FT.IT CONTAINS SMALL POCKETS OF ORE OF GOOD QUALITY BUT FOR THE MOST PART IS SILICEOUS.ABOUT 230 FT. NW OF MAIN WORKING A SMALL PIT EXPOSES OXIDE ORE IN CHERT WHICH MIGHT BE PROSPECTED - OTHER LOCATIONS DO NOT APPEAR TO HAVE COMMERCIAL ORE
Comment (Workings): LARGE OPEN CUT, SMALL PITS
References
Reference (Deposit): CALIF. JOUR. MINES & GEOL. V. 46, NO.2. APRIL 1950, P.344, PL. 58
Reference (Deposit): DOM BULL. 125, P.101
Reference (Deposit): BULL. 152, P.25
Reference (Deposit): BULL. 140 , P. 66 , PL. 1
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.
