Katoptrite
A variety of Minerals
What is Katoptrite?
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Katoptrite 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.
Katoptrite Localities Map
See where Katoptrite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- black; fire-red (thin sections); red in transmitted light
- Hardness (Mohs)
- 5.5
- Density
- 4.65 g/cm³
- Streak
- red brown
Chemical Properties
- Chemical Formula
- (Mn2+,Mg)13(Al,Fe3+)4Sb5+2(SiO4)2O20
- Elements
- Al, Mn, O, Sb, Si
Also Known As
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Katoptrite FAQs
How do I identify Katoptrite?
Katoptrite can be identified by its hardness of 5.5 on the Mohs scale, black; fire-red (thin sections); red in transmitted light color. Look for these key characteristics when examining specimens.
What color is Katoptrite?
Katoptrite typically appears in black; fire-red (thin sections); red in transmitted light. Color can vary depending on impurities and formation conditions.
How hard is Katoptrite?
Katoptrite has a hardness of 5.5 on the Mohs scale. This gives it moderate hardness.
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