jolliffeite
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Jolliffeite is a rare selenide mineral with formula NiAsSe or . It is the selenium analogue of the sulfide mineral gersdorffite, NiAsS, with a common impurity of cobalt, CoAsSe. It is named for its discoverer, Alfred Jolliffe, (1907–1988), a Canadian geologist of Queen's University, Kingston, Ontario.
In the Vinony graph
Vinony's link graph records 6 inbound references to jolliffeite, and connects out to Canada, gold and silver.
Vinony files it under Arsenic minerals, Cubic minerals and Minerals in space group 205.
Vinony links it to 5 Wikipedia language editions.
Wikidata facts
Show 5 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 2.EB.25
- crystal system
- cubic crystal system
- Nickel-Strunz 9th edition (updated 2009)
- 2.EB.25
- chemical formula
- NiAsSe
- IMA Mineral Symbol
- Jlf
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Encyclopedic overview
3 sectionsContents
- Crystallography
- Discovery and Importance
- References
Jolliffeite is a rare selenide mineral with formula NiAsSe or . It is the selenium analogue of the sulfide mineral gersdorffite, NiAsS, with a common impurity of cobalt, CoAsSe. It is named for its discoverer, Alfred Jolliffe, (1907–1988), a Canadian geologist of Queen's University, Kingston, Ontario.
==Crystallography== Jolliffeite has cubic symmetry and is therefore isometric meaning crystallographically, it contains three perpendicular axes of equal lengths. It has four three-fold axes all inclined at the same angle to the crystallographic axes. Optically, Jolliffeite is isotropic. Isotropic minerals have a single refractive index and are not birefringent. The single refractive index of Jolliffeite can be determined by its relief.
Excerpted from Wikipedia’s “jolliffeite” article, available under the CC BY-SA 4.0 licence.