Millisite
A variety of Minerals
What is Millisite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Millisite 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.
Millisite Localities Map
See where Millisite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- White, light gray; colourless in transmitted light.
- Hardness (Mohs)
- 5.5
- Density
- 2.87 g/cm³
Chemical Properties
- Chemical Formula
- (Na,K)CaAl6(PO4)4(OH)9 · 3H2O
- Elements
- Al, Ca, H, Na, O, P
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Millisite FAQs
How do I identify Millisite?
Millisite can be identified by its hardness of 5.5 on the Mohs scale, White color. Look for these key characteristics when examining specimens.
What color is Millisite?
Millisite typically appears in White, light gray; colourless in transmitted light.. Color can vary depending on impurities and formation conditions.
How hard is Millisite?
Millisite has a hardness of 5.5 on the Mohs scale. This gives it moderate hardness.
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