Mine detail: Montana Phosphate District

Previously called 'Brock MineCentennial Mine'

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Location

Lat / long: 45.6249, -112.75089

Resource(N)

Primary: Phosphorus-Phosphates
Discovery year: 1921

Production

Operation type: Unknown
Deposit type: CHEMICAL SEDIMENT, MARINE
Production size: Yes
Development status: Producer
First production started: 1929

Geology

Structure:CHERT, BLACKSHALE, PHOSPHORITE FACIES

References

MRDSISM0337
DEP60000655
Reference{Deposit:: POPOTT, C.C. AND SERVICE, A.L., 1965: U.S. BUREAU OF MINES, REPORT OF INVESTIGATIONS 6611, P.146}{Deposit:: CATHCART, J.B., SHELDON, R.P., AND GULBRANDSEN, R.A., 1983: U.S. GEOLOGICAL SURVEY CIRCULAR 888}{Deposit:: CRESOMEN, E.R. AND SWANSON, R.W. 1967: U.S. GEOLOGICAL SURVEY, PROFESSIONAL PAPER 313-C}