Mine detail: Maginnis Mine

Previously called ''

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Location

Lat / long:

47.17659, -109.21968

Resource(M)

Primary:	Gold
Secondary:	Silver
Ore:	Gold, Telluride, Argentite
Gangue:	Calcite, Fluorite
Discovery year:	1880

Production

Operation type:	Underground
Deposit type:	Au-Ag-Te vein
Production size:	Yes
Development status:	Past Producer
First production started:	1881

Geology

Host rock:	Madison Series, Massive Limestone
Host type:	Syenite,Limestone
Associated rock:	Gold Hill Syenite Porphyry
Associated type:	Syenite
Structure:	Domal Structures Resulting From Igneous Intrusions, Gold Hill Syenite Porphyry Intrusion
Tectonic:	Rocky Mountain Foreland

References

MRDS	W014674
DEP	10071340
Reference	ROBERTSON, A. F., 1950, MINES AND MINERAL DEPOSITS, FERGUS COUNTY, MONT.: U.S. BUREAU OF MINES INF. CIRC. 754
Reporter	Krohn, Douglas H.