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Embreyite, a new mineral from Berezov, Siberia

Published online by Cambridge University Press:  05 July 2018

S. A. Williams
S. A. Williams*
Affiliation:
British Museum (Natural History), Cromwell Road, London S.W. 7
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Summary

Embreyite is a new mineral that has been found only in old specimens collected at Berezov, Siberia. The composition is Pb4·97(CrO4)2·00(PO4)1·91.0·75H2O, or Pb5(CrO4)2(PO4)2. H2O based on both wet and electron-probe analyses. Z = I, Dmeas 6·45, Deale 6·41. Crystals are monoclinic with a 9·755 Å, b 5·636, c 7·135, β 103°5′ the space group may be P21/m. No single crystals were found. α = 2·20, β = γ = 2·36. Colour in various shades of orange with a yellow streak. H = 3½; no cleavages observed. Occurs with vauquelinite, crocoite, and phoenicochroite in the oxide zone assemblage from Berezov.

Type
Research Article
Information
Mineralogical Magazine , Volume 38 , Issue 299 , September 1972 , pp. 790 - 793
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1972

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Footnotes

1

Permanent address: Phelps Dodge Corpn., Douglas, Arizona 85607.

References

Arzruni, (A.), 1885. Zeits. deutsch, geoL Ges. 37, 865-96.Google Scholar
Hausmann, (F.L.), 1813. Handbuch der Mineralogie. Bandenhoeck and Kuprecht, Göttingen, 3, 1087.Google Scholar
John, (J.), 1845. Neues Jahrb. Min. 70.Google Scholar
Macquart, (L. C. H.), 1789. Essais ou reeueil de mdmoires sur plusieurs points de mindralogie. Cuchet, Paris, 137-69, 250-8.Google Scholar
Pisani, (F.), 1880. Bull. Soe. Min. France, 3, 196.Google Scholar