Faizievite (original) (raw)

A valid IMA mineral species

About FaizieviteHide

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Formula:

K2Na(Ca6Na)Ti4Li6[Si6O18]2[Si12O30]F2

Name:

Named in honor of Faiziev Abdulkhak Radzhabovitch (born 1938) of Dushanbe, Tadjikistan, professor and member-correspondent of the Academy of Sciences of the Republic of Tadjikistan.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:31306:1

d19c1008-e5e8-44c1-a3da-74944e1f820e

IMA Classification of FaizieviteHide

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IMA Formula:

Li6K2Na(Ca6Na)Ti4(Si6O18)2(Si12O30)F2

Type description reference:

Agakhanov, Atali A., Pautov, Leonid A., Uvarova, Yulia A., Sokolova, Elena V., Hawthorne, Frank C., Karpenko, Vladimir Y., Gafurov, Farhod G. (2007) Faizievite K2Na(Ca6Na)Ti4Li6Si24O66F2 – a New Mineral Species. New Data on Minerals, 42. Moscow. 5-10

Classification of FaizieviteHide

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9.CM.10

9 : SILICATES (Germanates)
C : Cyclosilicates
M : [Si6O18]12- 6-membered double rings (sechser-Doppelringe)

63.2.10.1

63 : CYCLOSILICATES Condensed Rings
2 : Condensed Rings (Milarite - Osumilite group)

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of FaizieviteHide

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Hardness:

VHN50=445 kg/mm2 - Vickers

Density:

2.83(2) g/cm3 (Measured) 2.819 g/cm3 (Calculated)

Optical Data of FaizieviteHide

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RI values:

_n_α = 1.651(2) _n_β = 1.655(2) _n_γ = 1.657(2)

2V:

Measured: 72° (2), Calculated: 70.4°

δ = 0.006

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Chemistry of FaizieviteHide

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Mindat Formula:

K2Na(Ca6Na)Ti4Li6[Si6O18]2[Si12O30]F2

Crystallography of FaizieviteHide

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Class (H-M):

1 - Pinacoidal

Cell Parameters:

a = 9.8156(9) Å, b = 9.8249(9) Å, c = 17.3087(16) Å
α = 99.209(2)°, β = 94.67(2)°, γ = 119.839(1)°

Ratio:

a:b:c = 0.999 : 1 : 1.762

Unit Cell V:

1,403.74 ų (Calculated from Unit Cell)

Crystal StructureHide

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ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0006162	Faizievite	Uvarova Yu A, Sokolova E, Hawthorne F C, Agakhanov A A, Pautov L A (2008) The crystal chemistry of faizievite, K2Li6Na(Ca6Na)Ti4[Si6O18]2[Si12O30]F2, a novel structure based on intercalated blocks of the baratovite and berezanskite structures The Canadian Mineralogist 46 163-171		2008	Dara-i-Poiz glacier, Alai mountain ridge, Tien-Shan Mountains, Tajikistan	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

Dara-i-Pioz glacier, Tajikistan. Data from the type description.

Geological EnvironmentHide

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Type Occurrence of FaizieviteHide

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General Appearance of Type Material:

Tabular plates without vicinal forms, and up to 0.3 cm in maximum dimension.

Place of Conservation of Type Material:

Fersman Mineralоgical Museum, Russian Academy of Science.

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Reference:

Agakhanov, A.A., Pautov, L.A., Uvarova, Y.A., Sokolova, E.V., Hawthorne, F.C., Karpenko, V.Y., Gafurov, F.G. (2007) Faizievite, K2Na(Ca6Na)Ti4Li6Si24O66F2 - a new mineral species. New Data on Minerals. Moscow: 42: 5-10.

Synonyms of FaizieviteHide

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Other Language Names for FaizieviteHide

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Relationship of Faizievite to other SpeciesHide

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Structurally related to group(s):

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of FaizieviteHide

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In shortwave ultraviolet light, it has a bright white luminescence; in longwave ultraviolet light, it does not luminesce.

Other InformationHide

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Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for FaizieviteHide

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References for FaizieviteHide

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Reference List:

Agakhanov, Atali A., Pautov, Leonid A., Uvarova, Yulia A., Sokolova, Elena V., Hawthorne, Frank C., Karpenko, Vladimir Y., Gafurov, Farhod G. (2007) Faizievite K2Na(Ca6Na)Ti4Li6Si24O66F2 – a New Mineral Species. New Data on Minerals, 42. Moscow. 5-10

Uvarova, Y. A., Sokolova, E., Hawthorne, F. C., Agakhanov, A. A., Pautov, L. A. (2008) The crystal chemistry of faizievite, K2Li6Na(Ca6Na)Ti4[Si6O18]2[Si12O30]F2, a novel structure based on intercalated blocks of the baratovite and berezanskite structures. The Canadian Mineralogist, 46 (1) 163-171 doi:10.3749/canmin.46.1.163

Localities for FaizieviteHide

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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.