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Honeaite, a new gold-thallium-telluride from the Eastern Goldfields, Yilgarn Craton, Western Australia

Clive M. Rice, Mark D. Welch, John W. Still, Alan J. Criddle and Chris J. Stanley
Honeaite, a new gold-thallium-telluride from the Eastern Goldfields, Yilgarn Craton, Western Australia
European Journal of Mineralogy (June 2016) 28 (5): 979-990

Abstract

Honeaite, ideal formula Au (sub 3) TlTe (sub 2) , is a new mineral from the late Archaean Karonie gold deposit, Eastern Goldfields province, Western Australia. Honeaite is found with native gold, tellurobismuthite, petzite, hessite, calaverite, melonite, mattagamite, frohbergite, altaite, pyrrhotite and molybdenite. These minerals are concentrated in microvughs and microfractures mainly within areas of prehnite alteration of amphibolite. The mineralisation appears to have been deposited under greenschist-facies conditions at lower temperatures than most gold deposits in the Eastern Goldfields.Single-crystal X-ray studies identified the structure of honeaite as orthorhombic, space group Pbcm, with a = 8.9671 (4) A, b = 8.8758(4) A, c = 7.8419(5) A, giving V = 624.14(6) A (super 3) with Z = 4. The strongest reflections of the calculated powder X-ray diffraction pattern are [d in A (I (sub rel) )(hkl)]: 2.938(100)(022), 2.905 (39,8)(322, 411), 2.989 (31)(300), 2.833 (23)(310), 1.853 (17)(332). Electron-microprobe analysis (EDS mode) gave (wt%) Au 56.33, Tl 19.68, Te 24.30, total 100.31, leading to an empirical formula (based on 2 Te apfu) of Au (sub 3.00) Tl (sub 1.01) Te (sub 2.00) . Honeaite is black with a metallic lustre and no observed cleavage. The calculated density is 11.18 g/cm (super 3) . In reflected plane-polarized light it is slightly bluish grey. Between crossed polars it is weakly anisotropic with dark brown to dark blue rotation tints. Reflectance values in air and in oil are given. Honeaite is named after the late Russell M. Honea (1929-2002).


ISSN: 0935-1221
EISSN: 1617-4011
Serial Title: European Journal of Mineralogy
Serial Volume: 28
Serial Issue: 5
Title: Honeaite, a new gold-thallium-telluride from the Eastern Goldfields, Yilgarn Craton, Western Australia
Affiliation: King's College, University of Aberdeen, Department of Geology and Petroleum Geology, Aberdeen, United Kingdom
Pages: 979-990
Published: 20160615
Text Language: English
Publisher: Schweizerbart'sche Verlagsbuchhandlung (Naegele u. Obermiller), Stuttgart, Germany
References: 33
Accession Number: 2016-085310
Categories: Economic geology, geology of ore depositsIgneous and metamorphic petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 4 tables, geol. sketch maps
S31°02'08" - S31°02'08", E122°33'39" - E122°33'39"
Secondary Affiliation: Natural History Museum, GBR, United Kingdom
Country of Publication: Germany
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Abstract, copyright, Schweizerbart'sche Verlagsbuchhandlung. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201641
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