Knasibfite (original) (raw)

A valid IMA mineral species

About KnasibfiteHide

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Formula:

K3Na4[SiF6]3[BF4]

Crystal System:

Orthorhombic

Name:

Named for its chemical composition (K, Na, Si, B, F).

This page provides mineralogical data about Knasibfite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:31406:0

d82dbded-b342-419c-8e58-75bdd3c8c63e

IMA Classification of KnasibfiteHide

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IMA Formula:

K3Na4(SiF6)3(BF4)

Type description reference:

Demartin, F., Gramaccioli, C. M., Campostrini, I., Orlandi, P. (2008) Knasibfite, K3Na4[SiF6]3[BF4], a new hexafluorosilicate-tetrafluoroborate from La Fossa Crater, Vulcano, Aeolian Islands, Italy. The Canadian Mineralogist, 46 (2) 447-453 doi:10.3749/canmin.46.2.447

Classification of KnasibfiteHide

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3.CH.25

3 : HALIDES
C : Complex halides
H : Silicofluorides

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 KnasibfiteHide

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Hardness Data:

Could not be measured

Comment:

Hardness could not be determined because of the small size of the crystals

Density:

2.75(1) g/cm3 (Measured) 2.77 g/cm3 (Calculated)

Optical Data of KnasibfiteHide

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Birefringence:

Isotropic minerals have no birefringence

Chemistry of KnasibfiteHide

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Mindat Formula:

K3Na4[SiF6]3[BF4]

Crystallography of KnasibfiteHide

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Crystal System:

Orthorhombic

Class (H-M):

m _m_2 - Pyramidal

Cell Parameters:

a = 5.522 Å, b = 17.106 Å, c = 9.175 Å

Ratio:

a:b:c = 0.323 : 1 : 0.536

Morphology:

{001}, {100}, {010}, {110}, {011} and {101}

Crystal StructureHide

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ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0006186	Knasibfite	Demartin F, Gramaccioli C M, Campostrini I, Orlandi P (2008) Knasibfite, K3Na4[SiF6]3[BF4], a new hexafluorosilicate-tetrafluoroborate from La Fossa Crater, Vulcano, Aeolian Islands, Italy The Canadian Mineralogist 46 447-453		2008	La Fossa Crater, Vulcano, Aeolian Islands, Italy	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of KnasibfiteHide

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Place of Conservation of Type Material:

Reference Collection of Dipartimento di Chimica Strutturale e Stereochimica Inorganica of Università degli Studi di Milano. no. 2006–03.

Associated Minerals at Type Locality:

Reference:

Demartin, F., Gramaccioli, C.M., Campostrini, I., Orlandi, P. (2008) Knasibfite, a new hexafluorosilicate from La Fossa crater, Vulcano, Aeolian Islands, Italy. The Canadian Mineralogist: 46: 447-453.

Synonyms of KnasibfiteHide

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Other Language Names for KnasibfiteHide

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Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of KnasibfiteHide

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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 KnasibfiteHide

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References for KnasibfiteHide

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Reference List:

Demartin, F., Gramaccioli, C. M., Campostrini, I., Orlandi, P. (2008) Knasibfite, K3Na4[SiF6]3[BF4], a new hexafluorosilicate-tetrafluoroborate from La Fossa Crater, Vulcano, Aeolian Islands, Italy. The Canadian Mineralogist, 46 (2) 447-453 doi:10.3749/canmin.46.2.447

Localities for KnasibfiteHide

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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.