Dean Mine

Producer in Calaveras county in California, United States with commodity Chromium

Geologic information

Identification information

Deposit ID	10109076
MRDS ID	M004642
Record type	Site
Current site name	Dean Mine
Related records	10235709

Geographic coordinates

Geographic coordinates:	-120.55211, 37.95158 (WGS84)
Relative position	1100' NW OF MAYFLOWER MINE ABOUT HALF WAY UP NW SLOPE FROM BOTTOM OF BEAN GULCH IN THE NW1/4 NW1/4 SEC.
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Geographic areas

Country	State	County
United States	California	Calaveras

Public Land Survey System information

Meridian	Township	Range	Section	Fraction	State
Mount Diablo	001N	013E	09		California

Commodities

Commodity	Importance
Chromium	Primary

Materials information

Materials	Type of material
Chromite	Ore

Nearby scientific data

(1)	-120.55211, 37.95158	ListMap

Comments on the geologic information

GEOL.DESC: DEPOSIT CONSISTS OF A FEW SMALL PODS OF MASSIVE CHROMITE IN GRAY SERPENTINE; ORE IS BLACK, NEARLY PURE,MEDIUM-GRAINED CHROMITE CONTAINING MINOR AMOUNTS OF KAMMERERITE. NUMEROUS SMALL VEINS OF MAGNESITE AND OPAL CUT THE SURROUNDING SERPENTINE

Economic information

Economic information about the deposit and operations

Development status	Producer
Commodity type	Metallic
Significant	No

Mining district

District name	French Creek Area

Comments on the production information

ABT. 10 TONS CONTAINING 45% CHROMIC OXIDE

Comments on the workings information

OPERATED DURING FIRST WORLD WAR; NO WORK DONE SINCE THAT TIME. WORKINGS CONSIST OF 3 SMALL OPEN-CUTS & A DRIFT

Reference information

Links to other databases

Agency	Database name	Acronym	Record ID	Notes
USGS	Mineral Resources Data System	MRDS	M004642

Bibliographic references

Deposit

CALIF. B.134, PT.III, CH. 2, P. 42 AND PL. 5; B. 145, PL. 2; REPT. 21, P. 165
Deposit

CALIF. COUNTY REPT. NO. 2, P. 129 AND PL. D
Deposit

MAP GP-561(PLOTTED ON LINE BY SEC.4&9)

Reporter information

Type	Date	Name	Affiliation	Comment
Reporter	01-JUN-1972	Gere, W.	U.S. Geological Survey