. A microscopic study of the silver ores and their associated minerals .. . Fig. C. 1-lG. D. MICROSCOPIC STUDY OF SILVER ORES. 347 EXPLANATION OF PLATE XV. Fig. a. (X74-) Pyrargyrite ipr), proustite {ps) and tetrahedrite {td)in cavities in quartz gangue. This is part filling and part , Nevada. Fig. B. (X88i.) An area of so-called intergrowth of proustite {ps) andgalena {gn) occurring as a residual mass in pyrargyrite {pr). Pyrargyritewas blackened by action of electric light employed in photographing. Schem-nitz, Hungary. Fig. C. (X47-) A late generation of iron disulfid (ma
. A microscopic study of the silver ores and their associated minerals .. . Fig. C. 1-lG. D. MICROSCOPIC STUDY OF SILVER ORES. 347 EXPLANATION OF PLATE XV. Fig. a. (X74-) Pyrargyrite ipr), proustite {ps) and tetrahedrite {td)in cavities in quartz gangue. This is part filling and part , Nevada. Fig. B. (X88i.) An area of so-called intergrowth of proustite {ps) andgalena {gn) occurring as a residual mass in pyrargyrite {pr). Pyrargyritewas blackened by action of electric light employed in photographing. Schem-nitz, Hungary. Fig. C. (X47-) A late generation of iron disulfid (marcasite, ma) in abackground of proustite and pyrargyrite in intimate mixture. Cobalt, On-tario, Fig. D. (X iP-) The sulfids, pyrite {py), sphalerite {si) and stephanite{st) replacing fragments in a brecciated gangue consisting mostly of , B. C. 348 F. N. GUILD. EXPLANATION OF PLATE XVL Fig. A. (X94-) Sphalerite (^/), galena (£fn) and stephanite (j/)- Schem-nitz, Hungary. Fig. B. (X48.) Sphalerite (si) with dots of chalcopyrite (cp) replacedby veinlet of gal
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectsilverores, bookyear1
