Carbokentbrooksite
A variety of Minerals
What is Carbokentbrooksite?
Carbokentbrooksite is a very rare mineral of the eudialyte group, with formula (Na,[])12(Na,Ce)3Ca6Mn3Zr3NbSiO(Si9O27)2(Si3O9)2(OH)3(CO3)H2O. The original formula was extended to show the presence of cyclic silicate groups and silicon at the M4 site, according to the nomenclature of eudialyte group. Carbokenbrooksite characterizes in being carbonate-rich (the other eudialyte-group species with essential carbonate are zirsilite-(Ce), golyshevite, and mogovidite). It is also sodium rich, being sodium equivalent of zirsilite-(Ce), with which it is intimately associated.
Market Value Factors
Pricing varies for every rock and mineral, so use these universal factors to gauge Carbokentbrooksite 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.
Carbokentbrooksite Localities Map
See where Carbokentbrooksite is found with a localities map, collecting zones, and geology context. Generate a sample map preview below.
Key Characteristics
Formation of Carbokentbrooksite
Carbokentbrooksite and zirsilite-(Ce) are found as replacements of grains and crystals of eudialyte. They occur in pegmatites of Darai-Pioz alkaline massif, Tajikistan - a locality known for many rare minerals. The minerals are associated with aegirine, ekanite, microcline, polylithionite, quartz, stillwellite-(Ce) (silicates), pyrochlore-group mineral, fluorite, calcite, and galena.
Quick Facts
Physical Properties
- Color
- yellow, orange-yellow
- Hardness (Mohs)
- 5
- Density
- 3.14 g/cm³
- Streak
- white
Chemical Properties
- Chemical Formula
- (Na3Na3Na3Na3Na3)Ca6(VMn2+3)Zr3[Si3O9]2[Si9O27SiO][Si<sub>9</sub>O<sub>27</sub>Nb(OH)<sub>3</sub>](CO3)(H2O) The formula was previously given here as: Na11-12(Na,Ce)3Ca6Mn3Zr3Nb(Si3O9)2(Si9O27)2SiO3(CO3).H2O The updated formulation attempts to better illustrate structural relationships to other members of the group (and is also charge-balanced).
- Elements
- C, Ca, H, Mn, Na, Nb, O, Si, V, Zr
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Carbokentbrooksite FAQs
How do I identify Carbokentbrooksite?
Carbokentbrooksite can be identified by its hardness of 5 on the Mohs scale, yellow color. Look for these key characteristics when examining specimens.
What color is Carbokentbrooksite?
Carbokentbrooksite typically appears in yellow, orange-yellow. Color can vary depending on impurities and formation conditions.
How hard is Carbokentbrooksite?
Carbokentbrooksite has a hardness of 5 on the Mohs scale. This gives it moderate hardness.
What is the formation of carbokentbrooksite of Carbokentbrooksite?
Carbokentbrooksite and zirsilite-(Ce) are found as replacements of grains and crystals of eudialyte. They occur in pegmatites of Darai-Pioz alkaline massif, Tajikistan - a locality known for many rare minerals. The minerals are associated with aegirine, ekanite, microcline, polylithionite, quartz, stillwellite-(Ce) (silicates), pyrochlore-group mineral, fluorite, calcite, and galena.
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