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Description of a Crystal of Parisite

Published online by Cambridge University Press:  14 March 2018

Guyot De Grandmaison
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Extract

Occurrence. At the Emerald Mines of the Valley of Muso, New Granada, in a gangue composed of anthracitic calcite and pyrites. Lustre, vitreous to resinous ; colour, yellowish brown to honey-yellow. An acute hexagonal pyramid with striations perpendicular to the axis. The crystal measures 84 millim. in length, and 12 millim. in thickness at the base.

The pyramid is perfect and its apex is intact.

All the specimens of Parisite which have been hitherto received, and are found in European Museums, exhibit a truncated hexagonal pyramid. This section is due to a very easy basal cleavage.

Type
Research Article
Information
Mineralogical magazine and journal of the Mineralogical Society , Volume 6 , Issue 29 , May 1885 , pp. 123
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1885

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