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The discreditation of oboyerite and a note on the crystal structure of plumbotellurite

Published online by Cambridge University Press:  04 October 2019

Owen P. Missen Open the ORCID record for Owen P. Missen [Opens in a new window] ,
Michael S. Rumsey ,
Anthony R. Kampf ,
Stuart J. Mills ,
Malcolm E. Back  and
John Spratt
Owen P. Missen*
Affiliation:
Geosciences, Museums Victoria, GPO Box 666, Melbourne3001, Victoria, Australia School of Earth, Atmosphere and Environment, Monash University, Clayton3800, Victoria, Australia
Michael S. Rumsey
Affiliation:
Department of Earth Sciences, Natural History Museum, Cromwell Road, LondonSW7 5BD, UK
Anthony R. Kampf
Affiliation:
Mineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California90007, USA
Stuart J. Mills
Affiliation:
Geosciences, Museums Victoria, GPO Box 666, Melbourne3001, Victoria, Australia
Malcolm E. Back
Affiliation:
Department of Natural History, Mineralogy, Royal Ontario Museum, 100 Queen's Park, Toronto, OntarioM5S 2C6, Canada
John Spratt
Affiliation:
Core Research Laboratories, Natural History Museum, Cromwell Road, LondonSW7 5BD, UK.
*
*Author for correspondence: Owen P. Missen, Email: omissen@museum.vic.gov.au
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Abstract

The mineral ‘oboyerite’, first described in 1979 from the Grand Central mine, Tombstone, Cochise County, Arizona, USA, has been re-examined. The type specimen from the Natural History Museum, London and a specimen from the Natural History Museum of Los Angeles County (traceable to S. A Williams, who first described ‘oboyerite’) were analysed in this study. The discreditation of ‘oboyerite’ as a valid mineral species has been approved by the Commission on New Minerals, Nomenclature and Classification of the International Mineralogical Association (Proposal 19-D). Single-crystal X-ray diffraction, powder X-ray diffraction, electron probe microanalysis and scanning electron microscopy were all employed to show that ‘oboyerite’ is formed of at least two distinct phases, including the lead–tellurium oxysalt minerals ottoite and plumbotellurite. During the course of the discreditation, plumbotellurite was confirmed to be identical to the synthetic compound α-Pb2+Te4+O3. Previously, in some mineralogical literature plumbotellurite was described as orthorhombic with no known crystal structure.

Keywords

oboyeritediscreditationtellurium oxysalttelluritetellurateplumbotelluriteGrand Central mineTombstoneCochise CountyArizonaUSA
Type
Article
Information
Mineralogical Magazine , Volume 83 , Issue 6 , December 2019 , pp. 791 - 797
Copyright
Copyright © Mineralogical Society of Great Britain and Ireland 2019

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Footnotes

Associate Editor: Oleg I Siidra

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