Fluoro-richterite
A variety of Richterite Root Name Group
What is Fluoro-richterite?
Fluororichterite is a rare amphibole with formula Na(NaCa)Mg5Si8O22F2.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Fluoro-richterite 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.
Fluoro-richterite Localities Map
See where Fluoro-richterite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Formation of Fluoro-richterite
Fluororichterite was first reported from the Ilmen Nature Reserve, Ilmen Mountains, Chelyabinsk Oblast', Southern Urals, Russia. It was recognized by the International Mineralogical Association in 1994. Its name is derived from its fluorine content and relation to richterite. At the type locality in the Ilmen Mountains fluororichterite occurs in carbonate veins in amphibolites and ultramafic rocks. In the Essonville occurrence in Wilberforce, Ontario it occurs in a limestone lens within a gneiss and is associated with phlogopite and calcite. It has also been reported from Austria, Germany, Italy, Spain and China. At Coyote Peak in the Coastal Range, Humboldt County, California, it occurs with a variety of rare minerals in an alkaline mafic diatreme.
Quick Facts
Physical Properties
- Color
- Brown to brownish-red, rose-red, yellow, grey-brown, also pale to dark green.
- Hardness (Mohs)
- 5 - 6
- Density
- 3.17 g/cm³
- Streak
- white
Chemical Properties
- Chemical Formula
- {Na}{CaNa}{Mg5}(Si8O22)(F,OH)2 The richterite group minerals are defined as sodium-calcium amphiboles with 0,5 apfu < A(Na+K+ 2Ca) where Na or K is dominant, and with C(Al+Fe3++2Ti)<0,5 apfu. The W position may contain (OH),F or Cl. Fluoro-richterite is defined with A position: Na dominant C position: Mg dominant W position: F dominant
- Elements
- Ca, F, H, Mg, Na, O, Si
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Fluoro-richterite FAQs
How do I identify Fluoro-richterite?
Fluoro-richterite can be identified by its hardness of 5 - 6 on the Mohs scale, Brown to brownish-red color. Look for these key characteristics when examining specimens.
What color is Fluoro-richterite?
Fluoro-richterite typically appears in Brown to brownish-red, rose-red, yellow, grey-brown, also pale to dark green.. Color can vary depending on impurities and formation conditions.
How hard is Fluoro-richterite?
Fluoro-richterite has a hardness of 5 - 6 on the Mohs scale. This gives it moderate hardness.
What is the formation of fluoro-richterite of Fluoro-richterite?
Fluororichterite was first reported from the Ilmen Nature Reserve, Ilmen Mountains, Chelyabinsk Oblast', Southern Urals, Russia. It was recognized by the International Mineralogical Association in 1994. Its name is derived from its fluorine content and relation to richterite. At the type locality in the Ilmen Mountains fluororichterite occurs in carbonate veins in amphibolites and ultramafic rocks. In the Essonville occurrence in Wilberforce, Ontario it occurs in a limestone lens within a gneiss and is associated with phlogopite and calcite. It has also been reported from Austria, Germany, Italy, Spain and China. At Coyote Peak in the Coastal Range, Humboldt County, California, it occurs with a variety of rare minerals in an alkaline mafic diatreme.