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Mineralogy and Petro raphy
Factors Contributing to this Study
5 other sections not shown
420 drift Distance 8x natural 8x natural size abundant altered to talc approximate assay associated Au per ton bands belt body bull Calcite Calculated pyrite value California chalcopyrite cold completely concentration contained continued country rock cubes cubic crystals decree definite deposition determination developed diorite east estimated degree extent extreme fault feet fissures follows formation Fracturing Fracturins free gold gold grains greater highly altered importance impregnation inches inclusions indication irregular Level Location Magnification masses massive material metadiorite area minerals mining Mother Lode movement nearly occurs Plate polished sections portions Position in vein possible precipitation present principal constituent probably Pyrite percentage quantities quartz raise range region Remarks Replacement shown shows side small amount solutions speci Specimen stope structure surface taken throughout tion trace transparent usually vary vein system wall-rock walls wide