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GEOREF RECORD

Oxides of the Pd-Sb-Bi system from the Chiney Massif (Aldan Shield, Russia)

Nadezhda D. Tolstykh, Aleksandr P. Krivenko, Yuriy G. Lavrent'ev, Oleg N. Tolstykh and Vladimir N. Korolyuk
Oxides of the Pd-Sb-Bi system from the Chiney Massif (Aldan Shield, Russia)
European Journal of Mineralogy (April 2000) 12 (2): 431-440

Abstract

Pd-Sb, Pd-Sb-Bi and Pd-Bi oxides occur in the exocontact sulphide ores of the Chiney anorthosite-gabbronorite massif. The Pd-Sb oxides are complete pseudomorphs after stibiopalladinite; they are grey-brown and weakly to moderately anisotropic and in some cases show optical zonality; reflectance varies in different grains from 26 to 34% at 589 nm; average VHN (sub 20) ; the oxide with the highest degree of oxidation is close to Pd (sub 5) Sb (sub 2) O (sub 4) . Pd-Sb-Bi oxide occurs as grey rims on Bi-bearing sudburyite; it is weakly anisotropic and has a lower reflectance than Pd-Sb oxide; VHN (sub 5) 81 kg/mm (super 2) . The composition varies from Pd (sub 0.49) (Sb,Bi) (sub 0.28) O (sub 0.24) to Pd (sub 0.33) (Sb,Bi) (sub 0.24) O (sub 0.43) . Pd-Bi oxide, formed after froodite, is grey and weakly anisotropic and has emulsion-like inclusions of a high-reflecting phase: reflectance is lower than for the other oxides; VHN (sub 5) 156 kg/mm (super 2) . This oxide may represent a solid solution of Pd in Bi (sub 2) O (sub 3) . The formation of all these Pd-Sb-Bi-O minerals may have been due to a high-T fluid influencing the host sandstones of the exocontact ores.


ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 12
Serial Issue: 2
Title: Oxides of the Pd-Sb-Bi system from the Chiney Massif (Aldan Shield, Russia)
Affiliation: Russian Academy of Sciences, Siberian Branch, Institute of Geology, Novosibirsk, Russian Federation
Pages: 431-440
Published: 200004
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 25
Accession Number: 2000-041817
Categories: Economic geology, geology of ore depositsMineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables
N55°30'00" - N61°30'00", E116°30'00" - E137°00'00"
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2020, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom
Update Code: 200014
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