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Grummett prospect, Greenwood, Marquette Co., Michigan, USA

Grummett prospect, Greenwood, Marquette Co., Michigan, USA

Photo: Daniel R. Fountain
Latitude: 46°31'4"N
Longitude: 87°45'9"W
A gold mine/prospect located in the NE¼ NW¼ Sec 36, T48N R28W.

Explored 1887-1889.

Mineral List

'Chlorite Group'
var: Sericite


14 entries listed. 11 valid minerals.

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Snelgrove, A.K., W.A. Seaman and V.L. Ayres (1944) Strategic Minerals Investigation in Marquette and Baraga Counties 1943. Michigan Geological Survey Progress Report 10.

Fountain, D.R. (1992) Michigan Gold: Mining in the Upper Peninsula.

Rocks & Min.: 58:112.

Heinrich & Robinson (2004) Mineralogy of Michigan.

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Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
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