First finding of merenskyite (Pd,Pt)Te-2 in porphyry Cu-Mo ores in Russia

Berzina, A; Sotnikov, VI; Economou-Ehopoulos, A; Eliopoulos, DG

dc.contributor.author	Berzina, A	en
dc.contributor.author	Sotnikov, VI	en
dc.contributor.author	Economou-Ehopoulos, A	en
dc.contributor.author	Eliopoulos, DG	en
dc.date.accessioned	2014-03-01T01:56:29Z
dc.date.available	2014-03-01T01:56:29Z
dc.date.issued	2007	en
dc.identifier.issn	1068-7971	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/28118
dc.subject	merenskyite	en
dc.subject	PGE	en
dc.subject	aksug porphyry cu-mo deposit	en
dc.subject	tuva	en
dc.subject	Russia	en
dc.subject.classification	Geosciences, Multidisciplinary	en
dc.subject.other	PLATINUM	en
dc.subject.other	DEPOSITS	en
dc.subject.other	MINERALIZATION	en
dc.subject.other	PALLADIUM	en
dc.subject.other	MINERALS	en
dc.subject.other	MONGOLIA	en
dc.title	First finding of merenskyite (Pd,Pt)Te-2 in porphyry Cu-Mo ores in Russia	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2007	en
heal.abstract	Contents of Pt and Pd were determined in weakly mineralized rocks, ores, and flotation concentrates of the Aksug porphyry Cu-Mo deposit, northeastern Tuva. In all studied samples they are above the detection limits: Pt = 17-96 ppb and Pd = 9-924 ppb. These elements are unevenly distributed throughout the rocks and ores, with Pd/Pt varying from 0.5 to 37. Study of Pd-rich ores (up to 924 ppb, Pd/Pt = 37) on a JEOL JSM 5600 scanning electron microscope revealed finest (2-5 mu m) merenskyite inclusions (25.20% Pd, 1.21% Pt, 72.31% Te) in chalcopyrite. The calculated crystallochernical formula of merenskyite from ores of the Aksug deposit is (Pd(0.862)Pt(0.023)Cu(0.026)Feo(0.025))Te-2.064.The merenskyite is associated with electrum (79.92% Au, 18.96% Ag), monazite, cobaltite, tennantite, and Sr-containing barite (4.6-18.0% Sr). Palladium mineralization occurs in massive chatcopyrite veinlets in zones of intensely propylitized rocks. The Devonian Aksug ore-bearing porphyry complex developed in the field of Early-Middle Cambrian intrusions of gabbro-diorite-plagiogranites associated with basalt-andesite effusions of island-arc complex. This might have led to high PGE contents in the Aksug rocks. The deposit formation proceeded with the participation of ore-bearing Cl-enriched fluids favoring the concentration and transport of PGE in porphyry copper systems. (C) 2007, IGM, Siberian Branch of the RAS. Published by Elsevier B.V. All rights reserved.	en
heal.publisher	ELSEVIER SCIENCE BV	en
heal.journalName	RUSSIAN GEOLOGY AND GEOPHYSICS	en
dc.identifier.isi	ISI:000250351600002	en
dc.identifier.volume	48	en
dc.identifier.issue	8	en
dc.identifier.spage	656	en
dc.identifier.epage	658	en