Latitude: 46°45'50"N
Longitude: 89°5'10"W
An underground copper mine consisting of three shafts adjacent to Mass City, MI. The Mass Mining Co. was organized in 1856 and worked sporadically until 1888, when the mine operations ceased for good. The mine was merged into the Mass Consolidated Mining Co. in 1899. A wide range of minerals can be found at the original Mass Mine site, including copper, silver, and datolite.
Mineral List
16 entries listed. 14 valid minerals.
The above list contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please
register so you can add to our database. This locality information is for reference purposes only. You should never attempt to
visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders
for access and that you are aware of all safety precautions necessary.
References
Rocks & Min.: 58:112 & 65:240
Butler, B.S., and Burbank, W.S., 1929, The Copper Deposits of Michigan. U.S. Geological Survey. Professional Paper 144. 238 pp.
The Copper Country Rock & Mineral Club, 2001, Red Gold and Tarnished Silver, 2nd Ed., 44 pp.
Mineral and Locality Search
