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Rhodarsenide (Rh,Pd) (sub 2) As, a new mineral

Mahmud Tarkian, Sasa Krstic, Karl-Heinz Klaska and Wilfried Liessmann
Rhodarsenide (Rh,Pd) (sub 2) As, a new mineral
European Journal of Mineralogy (December 1997) 9 (6): 1321-1325


Rhodarsenide has been found in concentrates from placers of the Srebrnica River, near Veluce, central Serbia; it is associated with PGE alloys, Rh-Ir sulpharsenides and sperrylite and occurs as inclusions (up to 80 X 100 mu m) in Pt-Fe and Ru-Os-Ir alloys. In reflected light it is brownish; pleochroism and anisotropy weak to distinct; at 589 nm reflectance values are 49.5-48.2 in air and 40.4-36.4 in oil; VHN 493-585 kg/mm (super 2) . EPMA results on individual grains gave Rh 38.53-60.81, Pd 12.10-34.67, Pt 0.00-2.38, Ir 0.09-0.48, Fe 0.00-0.10, Cu 0.08-0.46, As 23.42-27.96, Sb 0.09-1.60, Te 0.08-1.20, corresponding with (Rh (sub 1.67) Pd (sub 0.34) )As (sub 0.99) and (Rh (sub 1.07) Pd (sub 0.94) Pt (sub 0.03) )(As (sub 0.91) Sb (sub 0.04) Te (sub 0.01) ). Indexed XRD powder data are tabulated; strongest lines 2.237(10), 2.067(8), 2.426(7), 1.935(6), 1.860(5) Aa; a 5.866, b 3.893, c 7.302 Aa, V 166.7 Aa (super 3) ; Z = 4; D (sub calc) 11.32 g/cm (super 3) .

ISSN: 0935-1221
Serial Title: European Journal of Mineralogy
Serial Volume: 9
Serial Issue: 6
Title: Rhodarsenide (Rh,Pd) (sub 2) As, a new mineral
Affiliation: University of Hamburg, Institute of Mineralogy and Petrology, Hamburg, Federal Republic of Germany
Pages: 1321-1325
Published: 199712
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Federal Republic of Germany
References: 12
Accession Number: 1999-013179
Categories: Mineralogy of non-silicates
Document Type: Serial
Bibliographic Level: Analytic
N42°04'60" - N46°10'00", E18°55'00" - E23°00'00"
Secondary Affiliation: University of Toronto, CAN, Canada
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199905
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