Skip to Main Content
Skip Nav Destination
GEOREF RECORD

Silver-bearing sulfosalts from the metamorphosed Rampura Agucha Zn-Pb-(Ag) deposit, Rajasthan, India

Wolfram Hoeller and Subbaraju Mohandas Gandhi
Silver-bearing sulfosalts from the metamorphosed Rampura Agucha Zn-Pb-(Ag) deposit, Rajasthan, India
The Canadian Mineralogist (October 1995) 33, Part 5: 1047-1057

Abstract

The sediment-hosted Rampura Agucha Zn-Pb-(Ag) deposit contains assemblages rich in Ag-(Pb)-Sb sulphosalts. Freibergite Ag (sub 3.3-7.7) Cu (sub 6.5-2.2) Fe (sub 1.5-3.1) Zn (sub 0-0.8) Sb (sub 3.7-4.6) As (sub 0-0.4) S (sub 13) , pyrargyrite, stephanite, argentite, dyscrasite and various Pb-Ag-Sb sulphosalts occur either within or close to large aggregates of galena. Freibergite, pyrargyrite and stephanite also occur in galena-bearing veinlets in silicates. EPMA results reveal an average Ag content of 31 wt.% in freibergite, whereas galena is devoid of Ag. The sulphosalts are Sb-rich end members of the respective solid-solution series, with only limited As. The assemblages were affected by recrystallization and re-equilibration during high-grade metamorphism and subsequent cooling. The pyrargyrite presumably formed by replacement of freibergite and of Pb-Ag-Sb sulphosalts, the stephanite by decomposition of pyrargyrite and argentite, and the dyscrasite by exsolution from galena.


ISSN: 0008-4476
EISSN: 1499-1276
Coden: CAMIA6
Serial Title: The Canadian Mineralogist
Serial Volume: 33, Part 5
Title: Silver-bearing sulfosalts from the metamorphosed Rampura Agucha Zn-Pb-(Ag) deposit, Rajasthan, India
Affiliation: Institut fuer Geowissenschaften, Montanuniversitaet Leoben, Leoben, Austria
Pages: 1047-1057
Published: 199510
Text Language: English
Summary Language: French
Publisher: Mineralogical Association of Canada, Ottawa, ON, Canada
References: 39
Accession Number: 1999-047047
Categories: Economic geology, geology of ore depositsIgneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 1 table
N23°00'00" - N30°10'00", E69°30'00" - E77°49'60"
Secondary Affiliation: Hindustan Zinc, IND, India
Country of Publication: Canada
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United KingdomTwickenhamUKUnited Kingdom
Update Code: 199916
Close Modal

or Create an Account

Close Modal
Close Modal