Taseqite
Taseqite is a rare mineral of the eudialyte group, with formula Na12Sr3Ca6Fe3Zr3NbSiO(Si9O27)2(Si3O9)2(O,OH,H2O)3Cl2. The formula given is derived from the original one and shows a separate silicon at the M4 site, basing on the nomenclature of the eudialyte group. Taseqite, khomyakovite and manganokhomyakovite are three group representatives with species-defining strontium, although many other members display stronium diadochy. Both stronium (N4Sr) and niobium (M3Nb) are essential in the crystal structure of taseqite. When compared to khomyakovite, taseqite differs in niobium- and chlorine-dominance.
primaryTopic
Taseqite
Taseqite is a rare mineral of the eudialyte group, with formula Na12Sr3Ca6Fe3Zr3NbSiO(Si9O27)2(Si3O9)2(O,OH,H2O)3Cl2. The formula given is derived from the original one and shows a separate silicon at the M4 site, basing on the nomenclature of the eudialyte group. Taseqite, khomyakovite and manganokhomyakovite are three group representatives with species-defining strontium, although many other members display stronium diadochy. Both stronium (N4Sr) and niobium (M3Nb) are essential in the crystal structure of taseqite. When compared to khomyakovite, taseqite differs in niobium- and chlorine-dominance.
has abstract
La taseqite è un minerale appartenente al gruppo dell'eudialite.
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Taseqite is a rare mineral of ...... obium- and chlorine-dominance.
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Wikipage page ID
49,599,178
Wikipage revision ID
730,586,702
category
cleavage
color
Dark- to yellowish-brown; lemon yellow
diaphaneity
formula
Na12Sr3Ca6Fe3Zr3NbSi25O73)3Cl2
fracture
habit
luster
mohs
opticalprop
refractive
nω=1.64, nε=1.65
streak
symmetry
system
Ditrigonal pyramidal class
tenacity
unit cell
a= 14.28, c= 30.02 [Å]; Z = 3
subject
comment
La taseqite è un minerale appartenente al gruppo dell'eudialite.
@it
Taseqite is a rare mineral of ...... obium- and chlorine-dominance.
@en
label
Taseqite
@en
Taseqite
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wasDerivedFrom
isPrimaryTopicOf
name
Raslakite
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