Extreme PGE concentrations in lower Cambrian acid tuff layer from the Kunyang phosphate deposit, Yunnan Province, South China ? possible PGE source for lower Cambrian Mo-Ni-polyelement ore beds

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00025798%3A_____%2F10%3A00000143" target="_blank" >RIV/00025798:_____/10:00000143 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Extreme PGE concentrations in lower Cambrian acid tuff layer from the Kunyang phosphate deposit, Yunnan Province, South China ? possible PGE source for lower Cambrian Mo-Ni-polyelement ore beds

Original language description

A study of the PGE distribution in various lowermost Cambrian rock types of the Kunyang phosphate deposit in South China revealed surprisingly the highest PGE concentrations (434 ppb Pt, 142 ppb Pd, 57.97ppb Rh, < 1 ppb Ru and 0,14 ppb Ir) in a whole rock sample of acid tuff. The clay-quartz fraction of the tuff revealed elevated Ru and Ir concentrations but a depletion in Pt, Pd and Rh relative to the whole rock. LA-ICPMS analyses of pyrite and yielded comparatively high Ni and in some grains also elevated Re and Pd concentrations. It is very likely that the PGE are in part bound to submicroscopic inclusions in pyrite and/or intermetallic phases bound to the clay fraction. Our observations are consisten with diagenetic metal enrichment. Similar anomalously PGE-enriched acid tuffs could have played an important role in the origin of the slightly younger Mo-Ni-PGE phosphatic and sulfidic black shales in the Yangtze Platform.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

DD - Geochemistry

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2010

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Economic Geology

ISSN

0361-0128

e-ISSN

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Volume of the periodical

105

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

10

Pages from-to

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UT code for WoS article

000285177600001

EID of the result in the Scopus database

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