Anandite
A variety of Minerals
What is Anandite?
Anandite is a rare phyllosilicate with formula (Ba,K)(Fe,Mg)3(Si,Al,Fe)4O10(S,OH)2. It crystallizes in the monoclinic crystal system. It is black in color with a glassy luster and a near perfect cleavage. It was first described in 1967 for an occurrence in the Wilagedera Prospect of the North Western Province of Sri Lanka in bands of iron ore. It has also been found in Big Creek in Fresno County and in Trumball Peak in Mariposa County, California as well as the Sterling Mine in New Jersey. It was named for Ananda Kentish Coomaraswamy (1877–1947), who was the director of the Mineral Survey of Ceylon, Sri Lanka at that time. Anandite is a member of the mica group of minerals. Other minerals that anandite is associated with include: magnetite, chalcopyrite, pyrite, pyrrhotite and baryte.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Anandite 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.
Anandite Localities Map
See where Anandite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Black
- Hardness (Mohs)
- 3 - 4
- Density
- 3.91 g/cm³
Chemical Properties
- Chemical Formula
- (Ba,K)(Fe2+,Mg)3((Si,Al,Fe)4O10)(S,OH)2
- Elements
- Al, Ba, Fe, H, K, Mg, O, S, Si
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Anandite FAQs
How do I identify Anandite?
Anandite can be identified by its hardness of 3 - 4 on the Mohs scale, Black color. Look for these key characteristics when examining specimens.
What color is Anandite?
Anandite typically appears in Black. Color can vary depending on impurities and formation conditions.
How hard is Anandite?
Anandite has a hardness of 3 - 4 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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