Ferrokentbrooksite
A variety of Eudialyte group
What is Ferrokentbrooksite?
Ferrokentbrooksite is a moderately rare mineral of the eudialyte group, with formula Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3(Cl,F,OH)2. The original formula was extended form to show the presence of cyclic silicate groups and presence of silicon at the M4 site, according to the nomenclature of eudialyte group. As suggested by its name, it is the (ferrous) iron analogue of kentbrooksite. When compared to the latter, it is also chlorine-dominant instead of being fluorine-dominant. The original (holotype) material is also relatively enriched in rare earth elements, including cerium and yttrium.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Ferrokentbrooksite 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.
Ferrokentbrooksite Localities Map
See where Ferrokentbrooksite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Formation of Ferrokentbrooksite
Ferrokentbrooksite was discovered in Mont Saint-Hilaire, Quebec, Canada - a site wealth in rare alkaline minerals. At the site ferrokentbrooksite coexists with aegirine, albite, ancylite-(Ce), calcite, catapleiite, fluorite, fluorapatite, gonnardite, microcline, natrolite, nepheline, rhodochrosite, and serandite.
Quick Facts
Physical Properties
- Color
- reddish brown, red
- Hardness (Mohs)
- 5 - 6
- Density
- 3.06 g/cm³
- Streak
- white
Chemical Properties
- Chemical Formula
- Na15Ca6(Fe,Mn)3Zr3NbSi25O73(O,OH,H2O)3Cl2
- Elements
- Ca, Cl, Fe, H, Mn, Na, Nb, O, Si, Zr
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Ferrokentbrooksite FAQs
How do I identify Ferrokentbrooksite?
Ferrokentbrooksite can be identified by its hardness of 5 - 6 on the Mohs scale, reddish brown color. Look for these key characteristics when examining specimens.
What color is Ferrokentbrooksite?
Ferrokentbrooksite typically appears in reddish brown, red. Color can vary depending on impurities and formation conditions.
How hard is Ferrokentbrooksite?
Ferrokentbrooksite has a hardness of 5 - 6 on the Mohs scale. This gives it moderate hardness.
What is the formation of ferrokentbrooksite of Ferrokentbrooksite?
Ferrokentbrooksite was discovered in Mont Saint-Hilaire, Quebec, Canada - a site wealth in rare alkaline minerals. At the site ferrokentbrooksite coexists with aegirine, albite, ancylite-(Ce), calcite, catapleiite, fluorite, fluorapatite, gonnardite, microcline, natrolite, nepheline, rhodochrosite, and serandite.
