Feklichevite is a rare mineral of the eudialyte group with the formula Na11Ca9(Fe3+,Fe2+)2Zr3NbSi(Si3O9)2(Si9O27)2. The original formula was extended to show the presence of cyclic silicate groups and presence of silicon at the M4 site, according to the nomenclature of eudialyte group. When compared to other minerals of the group, feklichevite characterizes in the presence of ferric iron (thus similar to ikranite, mogovidite and fengchengite) and dominance of calcium at the N4 site. Calcium is ordered in the structure and is also present at the M1 site. Other iron-bearing minerals of the group are eudialyte, ferrokentbrooksite, georgbarsanovite, khomyakovite, labyrinthite, oneillite and rastsvetaevite, but they rather contain ferrous iron Feklichevite name honors Russian mineralogist and c
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rdfs:label
| - Feklichevita (ca)
- Feklichevite (en)
- Feklichevita (eu)
- Feklichevite (it)
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rdfs:comment
| - La feklichevita és un mineral de la classe dels silicats, que pertany al . Rep el nom en honor de Vladimir Georgievich Feklichev (Владимир Георгиевич Фекличев) (30 de juny de 1933 - 1999), petròleg, mineralogista i cristal·lògraf rus. (ca)
- Feklichevita silikato motako minerala da eta eudialyte taldearen kidea da. (eu)
- La feklichevite è un minerale appartenente al gruppo dell'eudialite. (it)
- Feklichevite is a rare mineral of the eudialyte group with the formula Na11Ca9(Fe3+,Fe2+)2Zr3NbSi(Si3O9)2(Si9O27)2. The original formula was extended to show the presence of cyclic silicate groups and presence of silicon at the M4 site, according to the nomenclature of eudialyte group. When compared to other minerals of the group, feklichevite characterizes in the presence of ferric iron (thus similar to ikranite, mogovidite and fengchengite) and dominance of calcium at the N4 site. Calcium is ordered in the structure and is also present at the M1 site. Other iron-bearing minerals of the group are eudialyte, ferrokentbrooksite, georgbarsanovite, khomyakovite, labyrinthite, oneillite and rastsvetaevite, but they rather contain ferrous iron Feklichevite name honors Russian mineralogist and c (en)
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streak
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strunz
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tenacity
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unit cell
| - a = 14.26, c = 30.17 [Å] ; Z = 3 (en)
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has abstract
| - La feklichevita és un mineral de la classe dels silicats, que pertany al . Rep el nom en honor de Vladimir Georgievich Feklichev (Владимир Георгиевич Фекличев) (30 de juny de 1933 - 1999), petròleg, mineralogista i cristal·lògraf rus. (ca)
- Feklichevite is a rare mineral of the eudialyte group with the formula Na11Ca9(Fe3+,Fe2+)2Zr3NbSi(Si3O9)2(Si9O27)2. The original formula was extended to show the presence of cyclic silicate groups and presence of silicon at the M4 site, according to the nomenclature of eudialyte group. When compared to other minerals of the group, feklichevite characterizes in the presence of ferric iron (thus similar to ikranite, mogovidite and fengchengite) and dominance of calcium at the N4 site. Calcium is ordered in the structure and is also present at the M1 site. Other iron-bearing minerals of the group are eudialyte, ferrokentbrooksite, georgbarsanovite, khomyakovite, labyrinthite, oneillite and rastsvetaevite, but they rather contain ferrous iron Feklichevite name honors Russian mineralogist and crystallographer, V. G. Feklichev. (en)
- Feklichevita silikato motako minerala da eta eudialyte taldearen kidea da. (eu)
- La feklichevite è un minerale appartenente al gruppo dell'eudialite. (it)
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cleavage
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dana
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diaphaneity
| - Transparent or Translucent (en)
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fluorescence
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formula
| - Na11Ca92Zr3Nb[Si25O73]5 (en)
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habit
| - isometric, thick-tabular; grains (en)
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