Meionite
A variety of Minerals
What is Meionite?
Meionite is a tectosilicate belonging to the scapolite group with the formula Ca4Al6Si6O24CO3. Some samples may also contain a sulfate group. It was first discovered in 1801 on Mt Somma, Vesuvius, Italy. It was named by Rene Just Haüy after μειωυ, the Greek word for less, in reference to the less acute pyramidal form as compared to Vesuvianite.
Optical Properties
- Refractive Index
- 1.556-1.600
- Birefringence
- 0.024-0.037
- Optical Character
- Uniaxial negative
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Meionite 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.
Meionite Localities Map
See where Meionite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Colorless, white, grey, pink, violet, blue, yellow, orange-brown, brown
- Hardness (Mohs)
- 5 - 6
- Density
- 2.86 g/cm³
- Streak
- White
Chemical Properties
- Chemical Formula
- Ca4Al6Si6O24CO3
- Elements
- Al, C, Ca, Cl, Na, O, S, Si
Also Known As
Identify Meionite Instantly
- Snap a photo, get instant results
- 6,700+ rocks, minerals & crystals
- Discover collecting spots near you
Meionite FAQs
How do I identify Meionite?
Meionite can be identified by its hardness of 5 - 6 on the Mohs scale, Colorless color. Look for these key characteristics when examining specimens.
What color is Meionite?
Meionite typically appears in Colorless, white, grey, pink, violet, blue, yellow, orange-brown, brown. Color can vary depending on impurities and formation conditions.
How hard is Meionite?
Meionite has a hardness of 5 - 6 on the Mohs scale. This gives it moderate hardness.
%252FAbenakiite-(ce)-01.jpg&size=small)
