Scawtite
A variety of Minerals
What is Scawtite?
Scawtite is a hydrous calcium silicate mineral with carbonate, formula: Ca7(Si3O9)2CO3·2H2O. It crystallizes in the monoclinic crystal system as thin plates or flat prisms. Scawtite was first described in 1929 for an occurrence at Scawt Hill in Northern Ireland. Scawtite occurs as in skarns and hydrothermal veins in limestone. Associated minerals include melilite, spurrite, tobermorite, thomsonite, larnite, grossular, bultfonteinite, calcite, analcime, foshagite and hillebrandite.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Scawtite 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.
Scawtite Localities Map
See where Scawtite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Colourless
- Hardness (Mohs)
- 4 - 5
- Density
- 2.74 g/cm³
Chemical Properties
- Chemical Formula
- Ca7(Si3O9)2CO3 · 2H2O
- Elements
- C, Ca, H, O, Si
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Scawtite FAQs
How do I identify Scawtite?
Scawtite can be identified by its hardness of 4 - 5 on the Mohs scale, Colourless color. Look for these key characteristics when examining specimens.
What color is Scawtite?
Scawtite typically appears in Colourless. Color can vary depending on impurities and formation conditions.
How hard is Scawtite?
Scawtite has a hardness of 4 - 5 on the Mohs scale. This gives it moderate hardness.
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