Helvite

Locality: Glens Peak, Sawtooth Batholith/Sawtooth Mts, Boise Co., Idaho, USA

A large tetrahedron of reddish-brown helvite; a rough crystal that was found on top of a boulder where another collector had apparently left it (and several other fine helvites!); from west of Glens Peak, Boise County, Idaho. Size 3.4 x 3.2 x 3.0 cm.; perhaps the largest helvite crystal ever found in North America.

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Photo added: 1st Dec 2008

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Copyright © Jolyon Ralph and Ida Chau 1993-2012. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Further information contact the 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 hundreds 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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