Hydroxycalcioroméite
A variety of Minerals
What is Hydroxycalcioroméite?
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 Hydroxycalcioroméite 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.
Hydroxycalcioroméite Localities Map
See where Hydroxycalcioroméite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Quick Facts
Physical Properties
- Color
- Amber yellow, golden yellow, yellow brown
- Hardness (Mohs)
- 5.5
- Density
- 5.31 g/cm³
- Streak
- Pale yelow brown
Chemical Properties
- Chemical Formula
- (Ca,Sb3+)2(Sb5+,Ti)2O6(OH)
- Elements
- Ca, H, O, Sb, Ti
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Hydroxycalcioroméite FAQs
How do I identify Hydroxycalcioroméite?
Hydroxycalcioroméite can be identified by its hardness of 5.5 on the Mohs scale, Amber yellow color. Look for these key characteristics when examining specimens.
What color is Hydroxycalcioroméite?
Hydroxycalcioroméite typically appears in Amber yellow, golden yellow, yellow brown. Color can vary depending on impurities and formation conditions.
How hard is Hydroxycalcioroméite?
Hydroxycalcioroméite has a hardness of 5.5 on the Mohs scale. This gives it moderate hardness.
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