35-8-007: altered granite - Butte District - Unknown Mine

Details

Specimen Number35-8-007Alternate Number10607CommentsIntensely phyllically altered granite with argillic overprint, several thin crosscutting quartz + chalcocite veins.In Teaching CollectionNoMineral(s)quartzsericiteclaypyritechalcociteRock Namealtered graniteDistrictButteExternal LinkMindatDeposit TypePorphyry CopperDonated ByUniversity of Wisconsin-Madison Department of GeoscienceReference MaterialACL-125: Miller, R.N., ed., 1973, Guidebook for the Butte Field Meeting of Society of Economic Geologists, Butte, Montana, August 18-21, 1973.

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35-8-007: altered granite - Butte District - Unknown Mine

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35-8-007: altered granite - Butte District - Unknown Mine