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Mineralogical Magazine; April 2004; v. 68; no. 2; p. 301-321; DOI: 10.1180/0026461046820188
© Mineralogical Society of Great Britain and Ireland

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FIG. 7. BSE images showing the habit and association of Bi-sulphosalts in Larga ores. (a) Gustavite (Gu) as a lamellar inclusion in pyrite (Py) and containing exsolution of krupkaite (Kr). Sample: 145d (Padina vein). (b) Coarse crystals of Sb-gustavite (Sb-Gu), within a cavity (dark areas) on a polished specimen. Gn: galena, Py: pyrite. Sample: 145d (Padina vein). (c) Treasureite (Tr) as small elongate blades within hessite (Hs), intergrown with tetradymite (Ttd), enclosed within pyrite (Py). Sample: 1983/1 (Vein 37, 625 m on 0 Vest gallery). (d) Similar assemblage as in c. Note the apparent equilibrium boundaries between treasureite and hessite. Sample: 1983/1 (Vein 37, 625 m on 0 Vest gallery).

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