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Partial melting of the Broken Hill galena-sphalerite ore; experimental studies in the system PbS-Fe-S-Zn-S-(Ag (sub 2) S)

John A. Mavrogenes, I. W. MacIntosh and D. J. Ellis
Partial melting of the Broken Hill galena-sphalerite ore; experimental studies in the system PbS-Fe-S-Zn-S-(Ag (sub 2) S)
Economic Geology and the Bulletin of the Society of Economic Geologists (February 2001) 96 (1): 205-210

Abstract

For many years the genesis of the Broken Hill Pb-Zn-Ag deposit has been, and continues to be, hotly debated, mostly because many of the original characteristics of the deposit have been obscured by high-grade metamorphism and deformation. Metamorphism not only overprinted the deposit but fundamentally modified the sulfides through metamorphic remobilization. Based on experimental studies it had also been speculated that partial melting of the sulfides may have occurred. The lack of experimental data at elevated pressures in the PbS-FeS-ZnS system has limited this suggestion to mere speculation. We present the results of an experimental study of the melting behavior of sulfides, which show that Broken Hill ores must have been partially molten under peak metamorphic conditions.


ISSN: 0361-0128
EISSN: 1554-0774
Coden: ECGLAL
Serial Title: Economic Geology and the Bulletin of the Society of Economic Geologists
Serial Volume: 96
Serial Issue: 1
Title: Partial melting of the Broken Hill galena-sphalerite ore; experimental studies in the system PbS-Fe-S-Zn-S-(Ag (sub 2) S)
Affiliation: Australian National University, Department of Geology, Canberra, Australia
Pages: 205-210
Published: 200102
Text Language: English
Publisher: Economic Geology Publishing Company, Lancaster, PA, United States
References: 27
Accession Number: 2001-041937
Categories: Economic geology, geology of ore depositsIgneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 tables
S37°30'00" - S28°15'00", E141°00'00" - E153°30'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 200113
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