Mine detail: Hennepin-Snyder Mine

Previously called 'Pence-Hennepin MineSnyderFather Hennepin'

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Location

Lat / long:

46.42417, -90.26372

Resource(M)

Primary:	Iron
Ore:	Goethite, Hematite
Orebody form:	STRATABOUND
Discovery year:	1848

Production

Operation type:	Unknown
Production size:	Small
Development status:	Past Producer
Production years:	1888-1891, 1900-1903, 1905-1906.
First production started:	1888
Last production ended:	1906

Geology

Host rock:	Ironwood Formation
Host type:	Iron Formation
Structure:	N-Dipping Sediments; Regional Trends Are East To West., An E-W Linear Iron Formation Going From Gogebic, Mi, To Ironwood, Mi, And To Mellen, Wi, And A Bit Farther W.
Tectonic:	Canadian Shield
Alteration processes:	Gogebic Iron Range Is In The Chlorite Metamorphic Zone In The Least Metamorphosed Area Of The Upper Peninsula.

References

MRDS	W062008
DEP	10082659
Reference	{Deposit:: EMATI}{Deposit:: SCHMIDT, 1980: USGS BULLETIN 1460}{Production:: LAKE SUPERIOR IRON ORE ASSOCIATION, 1952, P. 62-63.}
Reporter	Sutphin, David M. (Cannon, W. F.), Mason Jr., G.T.