The Twilight and Grey Claims is a beryllium mine located in Graham 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.
Twilight and Grey Claims MRDS details
Site Name
Primary: Twilight and Grey Claims
Commodity
Primary: Beryllium
Tertiary: Mica
Location
State: Arizona
County: Graham
District: Pinaleno Mountains Area
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
Deposit Size: S
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: Pegmatite
Role: Associated
Age Type: Associated Rock
Age Young: Neoproterozoic
Name: Pegmatite
Role: Associated
Age Type: Host Rock
Age Young: Neoproterozoic
Analytical Data
Not available
Materials
Ore: Beryl
Ore: Mica
Comments
Comment (Commodity): SAMPLE ASSAYED AT 0.27% BEO
Comment (Deposit): MICA AND SCATTERED BERYL IN PEGMATITE IN PRECAMBRIAN SCHIST. TOTAL OF 22 CLAIMS.
Comment (Workings): ADIT AND OPENCUTS
References
Reference (Deposit): MEEVES, H. C., 1966, U.S. BUREAU OF MINES REPORT OF INVESTIGATIONS RI-6828, P. 15 AND 57.
Reference (Deposit): MOORE, R. T., 1969, MINERAL AND WATER RESOURCES OF ARIZONA: U.S. 90TH CONGRESS, 2ND SESSION, SENATE COMMITTEE ON INTERIOR AND INSULAR AFFAIRS, P. 15 AND 57.
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
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.
