Cuproroméite
A variety of Minerals
What is Cuproroméite?
Roméite is a calcium antimonate mineral with the formula (Ca,Fe,Mn,Na)2(Sb,Ti)2O6(O,OH,F). Roméite is a honey-yellow mineral crystallizing in the hexoctahedral crystal system. It has a Mohs hardness of 5.5-6.0. It occurs in Algeria, Australia, Brazil, China, Europe, Japan, New Zealand, and the United States in metamorphic iron-manganese deposits and in hydrothermal antimony-bearing veins. Its type locality is Prabornaz Mine, Saint-Marcel, Aosta Valley, Italy. It was named after Jean-Baptiste L. Romé de l'Isle. Brugger, et al. (1997) used infrared spectroscopy to measure water content in Roméite crystals.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Cuproroméite 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.
Quick Facts
Physical Properties
- Color
- Olive-green, yellowish-green, blackish-green, tarnishes black
- Hardness (Mohs)
- 3 - 4
- Rock tumbling
- Not recommended
- Density
- 5.5 g/cm³
Chemical Properties
- Chemical Formula
- Cu2Sb2(O,OH)7
- Elements
- Cu, H, O, Sb
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Cuproroméite FAQs
How do I identify Cuproroméite?
Cuproroméite can be identified by its hardness of 3 - 4 on the Mohs scale, Olive-green color. Look for these key characteristics when examining specimens.
What color is Cuproroméite?
Cuproroméite typically appears in Olive-green, yellowish-green, blackish-green, tarnishes black. Color can vary depending on impurities and formation conditions.
How hard is Cuproroméite?
Cuproroméite has a hardness of 3 - 4 on the Mohs scale. This makes it a soft mineral that can be scratched easily.
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