The Mag Group is a magnesite mine located in Mohave county, Arizona.
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.
Mag Group MRDS details
Site Name
Primary: Mag Group
Secondary: Mag Claims
Commodity
Primary: Magnesite
Location
State: Arizona
County: Mohave
District: Oatman Mining District
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
Discovery Year: 1943
Years of Production:
Organization:
Significant: N
Physiography
General Physiographic Area: Intermontane Plateaus
Physiographic Province: Basin And Range Province
Physiographic Section: Mexican Highland
Mineral Deposit Model
Not available
Orebody
Not available
Structure
Not available
Alterations
Not available
Rocks
Name: Trachyte
Role: Associated
Age Type: Associated Rock
Age Young: Pliocene
Name: Trachyte
Role: Associated
Age Type: Host Rock
Age Young: Miocene
Analytical Data
Not available
Materials
Ore: Brucite
Ore: Magnesite
Ore: Serpentine
Gangue: Calcite
Gangue: Dolomite
Comments
Comment (Development): DIAMOND DRILLED IN 1940'S. NO EXPLORATION SINCE 1953. ; ECON.COM: DEPOSITS ARE TOO SMALL AND TOO LOW GRADE TO BE MINED PROFITABLY.
Comment (Reserve-Resource): HIGHEST GRADE AND THICKEST MATERIAL FOUND IN MAG GROUP.
Comment (Location): WEST SIDE OF BLACK MOUNTAINS.
Comment (Deposit): THE BRUCITE DEPOSITS ARE LAYERS AS MUCH AS 30 FT THICK RESTING ON THE ALCYONE TRACHYTE, THE OLDEST UNIT OF THE MID-UPPER TERTIARY VOLCANIC ROCK SEQUENCE. THE DEPOSITS ARE GENERALLY OVERLAIN BY OATMAN ANDESITE BUT AT SEVERAL PLACES THE BRUCITE LAYERS APPEAR TO BE WITHIN THE ANDESITE. SOME LAYERS AS MUCH AS 4-5 FT THICK BUT MOSTLY THINLY LAMINATED MATERIAL OF ALTERNATING BANDS OF CONTRASTING SHADES OF GREEN, GRAY, YELLOW, AND WHITE. FRESH BRUCITE RANGES FROM SERPENTINE GREEN TO LIGHT GRAY TO ALMOST WHITE. THE BRUCITE IS CRYPTOCRYSTALLINE AND DENSE WITH SUBCONCHOIDAL FRACTURE.
Comment (Geology): DEPOSITS TREND N AND DIP AS MUCH AS 70 DEGREES. ANDESITE OVERLIES DEPOSIT-BEARING SEDIMENTS.
References
Reference (Deposit): PEIRCE, H.W., 1990, ARIZONA GEOLOGICAL SURVEY INDUSTRIAL MINERALS CARD FILE.
Reference (Deposit): PHILLIPS, K.A., 1987, ARIZONA INDUSTRIAL MINERALS: ARIZONA DEPARTMENT OF MINES AND MINERAL RESOURCES MINERAL REPORT 4, 185 P.
Reference (Other Database): CIMRI
Reference (Deposit): ERICKSEN, G.E., 1969, "BRUCITE AND MAGNESITE", IN ABM BULLETIN 180, USGS BULLETIN 871, P. 320-324.
Arizona Gold
"Where to Find Gold in Arizona" 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 Arizona. Read more: Where to Find Gold in Arizona.
