About: Feklichevite

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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

Attributes	Values
rdf:type	Thing dul:ChemicalObject chemical substance Mineral mineral
rdfs:label	Feklichevita (ca) Feklichevite (en) Feklichevita (eu) Feklichevite (it)
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)
foaf:name	Feklichevite (en)
name	Feklichevite (en)
dcterms:subject	Cyclosilicates Minerals in space group 160 Zirconium minerals Sodium minerals Trigonal minerals Calcium minerals Iron(II,III) minerals Niobium minerals
Wikipage page ID	49594462 (xsd:integer)
Wikipage revision ID	1123908431 (xsd:integer)
Link from a Wikipage to another Wikipage	Cancrinite Cyclosilicates Minerals in space group 160 Zirconium minerals Pectolite Cyclosilicate Georgbarsanovite Mogovidite Syenite Manganese Strontium Hafnium Cerium Titanium Aegirine Eudialyte Eudialyte group Feldspar Fengchengite Ferrokentbrooksite Fluorine Diopside Hematite Sodium minerals Trigonal minerals Calcium minerals Iron(II,III) minerals Niobium minerals Khomyakovite Labyrinthite Lanthanum Ikranite Kovdor Oneillite Titanite H-M symbol Rastsvetaevite Trigonal dbr:Руrrhоtitе
sameAs	Feklichevite Feklichevite Feklichevite Feklichevite Feklichevite Feklichevite
streak	Brownish (en)
strunz	9 (xsd:integer)
tenacity	Brittle (en)
unit cell	a = 14.26, c = 30.17 [Å] ; Z = 3 (en)
dbp:wikiPageUsesTemplate	dbt:Reflist dbt:Short_description dbt:Infobox_mineral dbt:Silicate-mineral-stub
category	Cyclosilicate
class	H-M symbol Ditrigonal pyramidal (en)
color	Dark brown (en)
density	2.870000 (xsd:double)
symmetry	180.0 (second)
system	Trigonal
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)
cleavage	, perfect (en)
dana	64.100000 (xsd:double)
diaphaneity	Transparent or Translucent (en)
fluorescence	No (en)
formula	Na11Ca92Zr3Nb[Si25O73]5 (en)
habit	isometric, thick-tabular; grains (en)
IMAsymbol	Fek (en)
impurities	Mn, F (en)
luster	Vitreous (en)
mohs	5.500000 (xsd:double)
opticalprop	Uniaxial (en)

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