Mine detail: Regal Mine

Previously called 'Keystone Mine'

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Location

Lat / long:

45.17157, -112.42615

Resource(N)

Primary:	Talc-Soapstone
Ore:	Talc
Gangue:	Dolomite
Orebody form:	LENSE

Production

Operation type:	Unknown
Deposit type:	Replacement
Production size:	Small
Development status:	Producer

Geology

Host rock:	Pre Belt
Host type:	Marble
Associated rock:	Diabase
Associated type:	Diabase
Structure:	Deposit Close To Core Of Tightly Refolded Synform, Many Faults Cut Ore Body
Tectonic:	Area Of Block Faulting

References

MRDS	W026553
DEP	10111253
Reference	OLSON, R. H., 1976 , THE GEOLOGY OF MONTANA TALC DEPOSITS IN ELEVENTH INDUSTRIAL MINERALS FORUM: MONTANA BUREAU OF MINES AND GEOLOGY SPECIAL PUBLICATION 74 , P. 12
Reporter	Loen, Jeffrey S. (Pearson, Robert C.), Berg, Richard B. (Krohn, D. H.)