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.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Jolliffeite before comparing listings or appraisals.
Size & Weight
Larger, intact specimens usually command higher prices.
Rarity & Demand
Scarce material or popular varieties sell at a premium.
Condition & Finish
Chips, repairs, and heavy wear lower value; clean prep helps.
Treatment & Provenance
Untreated specimens with documented locality are prized.
Jolliffeite Localities Map
See where Jolliffeite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Hardness (Mohs)
- 6 - 6.5
- Density
- 7.1 g/cm³
Chemical Properties
- Chemical Formula
- NiAsSe
- Elements
- As, Ni, Se
Identify Jolliffeite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Jolliffeite FAQs
How do I identify Jolliffeite?
Jolliffeite can be identified by its hardness of 6 - 6.5 on the Mohs scale. Look for these key characteristics when examining specimens.
How hard is Jolliffeite?
Jolliffeite has a hardness of 6 - 6.5 on the Mohs scale. This gives it moderate hardness.
%252FAbenakiite-(ce)-01.jpg&size=small)
