 | | Journal (article/letter/editorial) | | Arsenolalnprite confirmed from the Copiap6 area, northern Chile UNTIL its characterization by Johan (I959), arsenolamprite...to apparently pure black arsenic from 'Copiap6, Chile', but both Jung (t926) and PadEra and Figera (I956)...the Pampa Larga mining district (27 ~ 36' S. ; 7~ xI' W.), near Copiap6, Atacama Province, Chile, the...confirmed by X-ray and electron microprobe study. This district is the only wellknown locality for native arsenic...among which stibnite, pyrite, galena, orpiment, realgar, and native arsenic predominate (Segerstrom and |  | | Journal (article/letter/editorial) | | ALPHA-ARSENIC SULFIDE, FROM VIINA ALACRAN, PAMPA LARGA, CHILE AreN H. Cr.anx, DepartmentoJ GeologicalSciences'...the Alacrrfn Ag-As-Sb vein deposit in northern chile. of these, one, which crystallized early in the...previously documented from natural assemblages. Realgar v'hich occurs as euhedral crystals in median vein...cavities is similar, but not identical to "normal" realgar, or B-AsS, from other localities. The relationships...temperature, monoclinic, B polymorph in specimensof realgar from many localities. The present note records |  | | Journal (article/letter/editorial) | | formation of metastibnite at Mina Alacri{n, Copiap6, Chile to oxidation from stibnite, but the metastibnite...(1970) Supergene metastibnite from Mina Alacr6n, Pampa Larga, Copiap6, Ctile. Amer. Mineral. SS, 210+-2106...SUPERGENE METASTIBNITE FROM MINA ALACRAN, PAMPA LARGA, COPIAPO, CHILE AraN H. Clanr, Department oJ Geological...27o36'S.; Long. 70o11'W') in the Pampa Larga mining district of northern Chile (Parker, Salas and P6rez, 1963)...oxidation product of cinnabar-bearing ores in northern Chile (Domeyko, 1864). However, X-ray examination of a |  | | Journal (article/letter/editorial) | | Arsenolalnprite confirmed from the Copiap6 area, northern Chile UNTIL its characterization by Johan (I959), arsenolamprite...to apparently pure black arsenic from 'Copiap6, Chile', but both Jung (t926) and PadEra and Figera (I956)...the Pampa Larga mining district (27 ~ 36' S. ; 7~ xI' W.), near Copiap6, Atacama Province, Chile, the...confirmed by X-ray and electron microprobe study. This district is the only wellknown locality for native arsenic...among which stibnite, pyrite, galena, orpiment, realgar, and native arsenic predominate (Segerstrom and |  | | Journal (article/letter/editorial) | | ARSENIANSPHALERITEFROM MINA AI,CARAN, PAMPALARGA,COPIAPO,CHILE Arew H. Cr-anr, Department oJ GeologicalSciences...material representsa mixture of sphalerite and realgar but no further work appearsto have been carried...Salas and P6rez, 1963), in the Pampa Larga mining district of northern Chile (Lat. 27"36'5.;Long. 70'11'W...with late-stagegreigite,pyrite, native arsenic,realgar,and orpiment;and (3) rarely, as free-standingcrystalsin...free-standingcrystalsin vugs, in association with realgar and orpiment. SphaleritegenerationsI and 2 have a brownish-black |  | | Journal (article/letter/editorial) | | discovery of an unusual occurrence of alacranite and realgar associated with polymetallic vein mineralization...the third polymorph of this composition, after realgar and pararealgar. The structure contains covalently...that of synthetic –As4S4. Keywords: alacranite, realgar, pararealgar, arsenic sulfide, structure determination...silver mine, Pampa Larga mining district, Chile, by Clark (1970). He reported a realgar-like mineral...described by Hall (1966). Clark (1970) noted that realgar coats surfaces or cavity walls, whereas alacranite |
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Descubridora mine, Pampa Larga mining district, Tierra Amarilla, Copiapó Province, Atacama, Chile