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The metavoltine problem: metavoltine from Madeni Zakh and Chuquicamata, and a related artificial compound

Published online by Cambridge University Press:  05 July 2018

F. Scordari*
Affiliation:
Istituto di Mineralogia dell'Università di Bari, Italy

Summary

Bandy (1938) described as metavoltine? a mineral coming from Chuquicamata (Chile) with chemical composition K2Na6Fe3+(SO4)12(OH)2·20H2O. Owing to some differences between this mineral and that first described by Blaas (1883), doubts persist on the identity of these two compounds. X-ray analyses were performed to clarify the relation between them. An artificial product, closely related to metavoltine as regards lattice and chemical composition, was also studied, and affords a better understanding of the Na and K diadochy already observed in metavoltine.

Type
Research Article
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1977

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References

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