Jolliffeite

A variety of Minerals

What is Jolliffeite?

Jolliffeite is a rare selenide mineral with formula NiAsSe or (Ni,Co)AsSe. 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.

Jolliffeite Market Value Calculator

Estimate the market value of Jolliffeite using size, quality, and finish. This preview calculator is for quick context and is not a formal appraisal.

Preview only. Full pricing comps and valuation report in the app.

Jolliffeite Localities Map

See where Jolliffeite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.

Map preview
North ZoneCentral RidgeSouth Basin

Interactive map layers and collecting notes are available in the app.

Quick Facts

Physical Properties

Hardness (Mohs)
6 - 6.5
Density
7.1 g/cm³

Chemical Properties

Chemical Formula
NiAsSe
Elements
As, Ni, Se
FREE APP
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