5-3-004: granite - Silver Bell District - Silver Bell Mine

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Specimen Number5-3-004Alternate NumberSB-3CommentsAlaskite. Specimen collected 3000 ft. from nearest ore and is only incipiently propylitized. Biotite largely fresh, with only minor chlorite and epidote present. Anomalously high % biotite, 5-8% makes this look like a true granite. No discernible sulfides and no significant clay minerals present.In Teaching CollectionNoMineral(s)biotitechloritefeldsparquartzRock NamegraniteDistrictSilver BellMineSilver BellExternal LinkMindatGeo-Location3000 ft west of ore bodySub-LocationundefinedDeposit TypePorphyry CopperGeo-Coords^[1]Reference MaterialACL-127: Dilbert, C., and Davis, S., 1981, Trip #10 Silver Bell-North Silver Bell Deposits, in Wilkins, J., coord., AZ Geol. Soc. And Univ. AZ 1981 Symposium on Relations of Tectonics to Ore Deposits in the southern Cordillera.

ACL-173: Anzalone, S.A., Beane, R.E., Davis, S.R., Graybeal, F.T., Guilbert, J.M., Oakley, C.A., Titley, S.R., and West, R.M., org., 1979, Society of Economic Geology Field Conference on Tucson-Area Porphyry Copper Deposits, Tucson, AZ, May 3-6, 1979, 205 p.

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5-3-004: granite - Silver Bell District - Silver Bell Mine

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5-3-004: granite - Silver Bell District - Silver Bell Mine