Barrerite
A variety of Minerals
What is Barrerite?
Barrerite is a tectosilicate mineral and a member of the zeolite family. It is one of the rarer zeolites. It was named for Richard Barrer, a New Zealand-born chemist. Barrerite crystal are white to pinkish, with a vitreous-glassy luster. The crystal system is orthorhombic and is flat and tabular in appearance. It has a Mohs hardness of 3 to 4 and its cleavage is perfect. Barrerite has a white streak and a density of 2.13. It was first described in 1974 for an occurrence in Sardinia at Sant' Efisio Tower on Cape Pula in Cagliari Province. It has also been reported from Rocky Pass, Kuiu Island, Alaska, and a few other localities.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Barrerite 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.
Barrerite Localities Map
See where Barrerite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- White, Pink
- Hardness (Mohs)
- 3 - 4
- Density
- 2.08 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- (Na,K,Ca0.5)2[Al2Si7O18] · 7H2O
- Elements
- Al, Ca, H, K, Na, O, Si
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Barrerite FAQs
How do I identify Barrerite?
Barrerite can be identified by its hardness of 3 - 4 on the Mohs scale, White color. Look for these key characteristics when examining specimens.
What color is Barrerite?
Barrerite typically appears in White, Pink. Color can vary depending on impurities and formation conditions.
How hard is Barrerite?
Barrerite 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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