Oxybismutomicrolite (original) (raw)

A valid IMA mineral species

About OxybismutomicroliteHide

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Formula:

(Bi1.33◻0.67)Σ2Ta2O6O

Name:

Named according to the pyrochlore supergroup nomenclature of 2010, indicating an oxygen and bismuth bearing microlite-group member.

This page provides mineralogical data about Oxybismutomicrolite.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:53881:9

8cba867a-8b54-4e74-b176-2fc58fea0d97

IMA Classification of OxybismutomicroliteHide

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IMA Formula:

(Bi1.33◻0.67)Ta2O6O

Type description reference:

Kasatkin, A. V., Britvin, S. N., Peretyazhko, I. S., Chukanov, N. V., Škoda, R., & Agakhanov, A. A. (2020). Oxybismutomicrolite, a new pyrochlore-supergroup mineral from the Malkhan pegmatite field, Central Transbaikalia, Russia. Mineralogical Magazine 84:444-454

Classification of OxybismutomicroliteHide

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4.DH.15

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
D : Metal: Oxygen = 1:2 and similar
H : With large (+- medium-sized) cations; sheets of edge-sharing octahedra

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 OxybismutomicroliteHide

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Hardness:

VHN100=609 kg/mm2 - Vickers

Fracture:

Irregular/Uneven

Density:

6.98(2) g/cm3 (Measured) 7.056 g/cm3 (Calculated)

Optical Data of OxybismutomicroliteHide

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Birefringence:

Isotropic minerals have no birefringence

Colour in reflected light:

light grey

Internal Reflections:

none

Pleochroism:

Non-pleochroic

Comments:

The mean n value, calculated from the Gladstone–Dale equation using the empirical formula and the calculated density, is 2.184.

Chemistry of OxybismutomicroliteHide

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Mindat Formula:

(Bi1.33◻0.67)Σ2Ta2O6O

Crystallography of OxybismutomicroliteHide

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Class (H-M):

m_3_m _(_4/_m_32/m ) - Hexoctahedral

Cell Parameters:

a = 10.475(1) Å

Unit Cell V:

1,149.38 ų (Calculated from Unit Cell)

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

From Type Description.

Geological EnvironmentHide

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Type Occurrence of OxybismutomicroliteHide

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General Appearance of Type Material:

Rough octahedral crystals up to 1 mm across and equant grains up to 2 mm across embedded in an albite–lepidolite–elbaite complex

Place of Conservation of Type Material:

Type material is deposited in the collections of the Fersman Mineralogical Museum, Russian Academy of Sciences, Leninskiy Prospekt 18-2, Moscow 119071, Russia, registration number 5409/1

Associated Minerals at Type Locality:

Reference:

Kasatkin, A.V., Britvin, S.N., Peretyazhko, I.S., Chukanov, N.V., Škoda, R., Agakhanov, A.A. (2020) Oxybismutomicrolite, a new pyrochlore-supergroup mineral from the Malkhan pegmatite field, Central Transbaikalia, Russia. Mineralogical Magazine: 84: 444-454.

Synonyms of OxybismutomicroliteHide

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Relationship of Oxybismutomicrolite to other SpeciesHide

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Other Members of this group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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Fluorescence of OxybismutomicroliteHide

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Other InformationHide

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Notes:

Does not react with cold hydrochloric and nitric acids.

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 OxybismutomicroliteHide

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References for OxybismutomicroliteHide

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Reference List:

Atencio, D., Andrade, M. B., Christy, A. G., Giere, R., Kartashov, P. M. (2010) The pyrochlore supergroup of minerals: nomenclature. The Canadian Mineralogist, 48 (3) 673-698 doi:10.3749/canmin.48.3.673

Kasatkin, A. V., Britvin, S. N., Peretyazhko, I. S., Chukanov, N. V., Škoda, R., & Agakhanov, A. A. (2020). Oxybismutomicrolite, a new pyrochlore-supergroup mineral from the Malkhan pegmatite field, Central Transbaikalia, Russia. Mineralogical Magazine 84:444-454

Localities for OxybismutomicroliteHide

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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.