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Communications from the Oxford Mineralogical Laboratory. On the constitution of the natural Arsenates and Phosphates. Part III. Plumbogummite and Hitchcockite

Published online by Cambridge University Press:  14 March 2018

E. G. J. Hartley
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Extract

The present paper deals with the somewhat obscure lead aluminium phosphates, of which the following varieties have hitherto been described :—

  1. (i) The original plumbogummite, a mineral found at Huelgoat in Brittany, and at Nuissière, Dept. Rhône.

  2. (ii) Some varieties of pyromorphite, containing alumina and water as constituents. These pyromorphites occur also at Huelgoat, and are usually quoted in books on Mineralogy as plumbogummite, although Damour, in his original paper on the subject, clearly distinguishes between the true plumbogummite and the aluminous pyromorphites.

  3. (iii) The American mineral, bitehcockite, occurring in the Canton Mines, Georgia.

  4. (iv) A Cumberland mineral, which for some time was mistaken for zinc silicate, but has recently been shown to be a phosphate of lead and aluminium (Miers, Min. Mag. 1896, XI, 272).

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 12 , Issue 57 , July 1900 , pp. 223 - 233
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1900

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References

1 Partly derived from organic matter.