ferrokentbrooksite
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Ferrokentbrooksite is a moderately rare mineral of the eudialyte group, with formula . 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.
Wikidata facts
- Named after
- iron(II)
- Image
- Ferrokentbrooksite, Amphibole Supergroup-166795.jpg
Show 7 more facts
- Nickel-Strunz '10th ed', review of (9th ed/ 2009 update)
- 9.CO.10
- Nickel-Strunz 9th edition (updated 2009)
- 9.CO.10
- crystal system
- trigonal crystal system
- streak color
- white
- Commons category
- Ferrokentbrooksite
- IMA Mineral Symbol
- Fktb
- chemical formula
- Na₁₅Ca₆(Fe,Mn)₃Zr₃NbSi₂₅O₇₃(O,OH,H₂O)₃Cl₂
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Encyclopedic overview
4 sectionsContents
- Occurrence and association
- Notes on chemistry
- Notes on structure
- References
Ferrokentbrooksite is a moderately rare mineral of the eudialyte group, with formula . 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.
==Occurrence and association== 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.
Excerpted from Wikipedia’s “ferrokentbrooksite” article, available under the CC BY-SA 4.0 licence.