Arizona · Graham County
Past Producer

Crow Claims

Graham County, Arizona, United States
Manganese
⌖ Show on mapUSGS source ↗
Description

C.M. Magill

Commodities
PrimaryManganese
Commodity typeM
Deposit
Deposit sizeS
WorkingsSurface
Orebody formLENTICULAR/IRREGULAR BUNCHES
Ore controlManganese Minerals Occur In 2 N-Trending Fractures That Cut Fine-Grained Volcanic Rock
Materials
Ore mineralsPsilomelane
GangueCalcite
Geology
Host rockVolcanic Rock (Aphanitic)
Associated rockRhyolite,Andesite · Tertiary Volcanic Flows
StructureSteep Northerly Trending Zones Of Shearing And Brecciation In Volcanic Rocks, Manganese Deposits Form Lenticular Bodies Composed Of A Network Of Narrow Seams And Small Irregular Bunches Of Oxides Deposited Around Fragments Of Country Rock
AlterationSurface Oxidation
Economic & production
Development statusPast Producer
Discovery year1951
Identification
Deposit ID10026949
MRDS IDM001257
RegionNA
Data scoreC
Coordinates32.74178, -109.24175
References
FARNHAM, L.L., STEWART, L.A., AND DELONG, C.W., 1961, MANGANESE DEPOSITS OF EASTERN ARIZONA: U.S.B.M. INFORMATION CIRCULAR 7990, P. 105.USBM FILES, CROW GROUP.U.S.B.M. I.C. 7990.