Stilbite-ca
Stilbite-Ca
A variety of Minerals
What is Stilbite-ca?
Stilbite is the name of a series of tectosilicate minerals of the zeolite group. Prior to 1997, stilbite was recognized as a mineral species, but a reclassification in 1997 by the International Mineralogical Association changed it to a series name, with the mineral species being named: stilbite-Ca stilbite-Na Stilbite-Ca, by far the more common of the two, is a hydrous calcium sodium and aluminium silicate, NaCa4(Si27Al9)O72·28(H2O). In the case of stilbite-Na, sodium dominates over calcium. The species are visually indistinguishable, and the series name stilbite is still used whenever testing has not been performed.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Stilbite-ca 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.
Stilbite-ca Localities Map
See where Stilbite-ca is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- White, colourless, red, light yellow, light to dark brown, cream, orange, pink
- Hardness (Mohs)
- 3.5 - 4
- Density
- 2.23 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- NaCa4[Al9Si27O72] · nH2O
- Elements
- Al, Ca, H, Na, O, Si
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Stilbite-ca FAQs
How do I identify Stilbite-ca?
Stilbite-ca can be identified by its hardness of 3.5 - 4 on the Mohs scale, White color. Look for these key characteristics when examining specimens.
What color is Stilbite-ca?
Stilbite-ca typically appears in White, colourless, red, light yellow, light to dark brown, cream, orange, pink. Color can vary depending on impurities and formation conditions.
How hard is Stilbite-ca?
Stilbite-ca has a hardness of 3.5 - 4 on the Mohs scale. This gives it moderate hardness.
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