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Nontronite from
Arizona Central Mine (Detroit Copper Co. group [in part]; Arizona Central vein; Copper Mountain tunnel), Copper Mountain District (Clifton-Morenci District), Shannon Mts, Greenlee Co., Arizona, USA

Description
Comments:	As silky seams in limy shale.
Quality of samples:	not specified / average specimens
Confirmation
Validity:	Believed Valid
References
References:	Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 314; Schwartz, G.M. (1947), Hydrothermal alteration in the 'porphyry copper' deposits, Econ.Geol.: 42: 319-352; Schwartz, G.M. (1958), Alteration of biotite under mesothermal conditions, Econ.Geol.: 53: 164-177; Galbaith, F.W. & D.J. Brennan (1959), Minerals of AZ: 110.
Data
Mineral Data:	Click here to view Nontronite data
Locality Data:	Click here to view Arizona Central Mine (Detroit Copper Co. group [in part]; Arizona Central vein; Copper Mountain tunnel), Copper Mountain District (Clifton-Morenci District), Shannon Mts, Greenlee Co., Arizona, USA

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