Olgite
A variety of Minerals
What is Olgite?
Olgite is a rare blue-green colored phosphate mineral series that forms microscopic prismatic crystals that are trigonal in structure. Its chemical formula is Na(Sr,Ba)PO4. Olgite was discredited as a mineral name in 2008 by the International Mineralogical Association and is now the series name for bario-olgite and strontio-olgite (hypothetical mineral). The substance was named after Russian mineralogist Olga Anisimovne-Vorobiova (1902–1974).
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Olgite 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.
Olgite Localities Map
See where Olgite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Bright blue, bluish green
- Hardness (Mohs)
- 4.5
- Density
- 3.904 g/cm³
Chemical Properties
- Chemical Formula
- (Sr,Ba)(Na,Sr,REE)2Na(PO4)2
- Elements
- Ba, Na, O, P, Sr
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Olgite FAQs
How do I identify Olgite?
Olgite can be identified by its hardness of 4.5 on the Mohs scale, Bright blue color. Look for these key characteristics when examining specimens.
What color is Olgite?
Olgite typically appears in Bright blue, bluish green. Color can vary depending on impurities and formation conditions.
How hard is Olgite?
Olgite has a hardness of 4.5 on the Mohs scale. This gives it moderate hardness.
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