Żabińskiite (original) (raw)

A valid IMA mineral species

Formula:

Ca[Al0.5(Ta,Nb)0.5)](SiO4)O

Specific Gravity:

3.897 (Calculated)

Name:

Named in honor of Witold Stanisław Żabiński (17 July 1929, Kraków, Poland – 15 January 2007), one of the most eminent Polish mineralogists, one of the founders of the Mineralogical Society of Poland and its President in 1980–1994. He was also a professor, head of the Department of Mineralogy and Geochemistry, and Director of the Institute of Geology and Mineral Materials WGP AGH. He authored over 200 papers and textbooks.

The second Ta-bearing silicate mineral after holtite. Isostructural with triclinic modification of titanite, see triclinic titanite . Identical to titanite and other titanite group species in terms of bond topology.

Titanites associated with żabińskiite are (Al,Ta,Nb)-bearing and (Al,F)-bearing.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:46703:4

IMA Classification of ŻabińskiiteHide

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IMA Formula:

Ca[Al0.5(Ta,Nb)0.5)](SiO4)O

Type description reference:

Pieczka, Adam, Hawthorne, Frank C., Ma, Chi, Rossman, George R., Szełęg, Eligiusz, Szuszkiewicz, Adam, Turniak, Krzysztof, Nejbert, Krzysztof, Ilnicki, Sławomir, Buffat, Philippe, Rutkowski, Bogdan (2017) Żabińskiite, ideally Ca(Al0.5Ta0.5)(SiO4)O, a new mineral of the titanite group from the Piława Górna pegmatite, the Góry Sowie Block, southwestern Poland. Mineralogical Magazine, 81 (3) 591-610 doi:10.1180/minmag.2016.080.110

Classification of ŻabińskiiteHide

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9.AG.15

9 : SILICATES (Germanates)
A : Nesosilicates
G : Nesosilicates with additional anions; cations in > [6] +- [6] coordination

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.

Pronunciation of ŻabińskiiteHide

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Pronunciation:

Physical Properties of ŻabińskiiteHide

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Fracture:

Irregular/Uneven

Density:

3.897 g/cm3 (Calculated)

Comment:

Strong dependence on composition

Optical Data of ŻabińskiiteHide

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δ = 0.000

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

Pleochroism:

Non-pleochroic

Comments:

n: means ≥ 1.89
yellowish brown

Chemistry of ŻabińskiiteHide

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Mindat Formula:

Ca[Al0.5(Ta,Nb)0.5)](SiO4)O

Crystallography of ŻabińskiiteHide

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Class (H-M):

1 - Pinacoidal

Cell Parameters:

a = 7.031(2) Å, b = 8.692(2) Å, c = 6.561(2) Å
α = 89.712°, β = 113.83(1)°, γ = 90.35(1)°

Ratio:

a:b:c = 0.809 : 1 : 0.755

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

From Type Description.

Geological EnvironmentHide

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Type Occurrence of ŻabińskiiteHide

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General Appearance of Type Material:

Compositionally inhomogeneous aggregates (with titanite and K-mica), ca. 120 × 70 μm in size

Place of Conservation of Type Material:

Type material is deposited in the collections of the Mineralogical Museum of the University of Wrocław (Faculty of Earth Science and Environmental Management, Institute of Geological Sciences, Mineralogical Museum, 50-205 Wrocław, Cybulskiego 30, Poland),

Geological Setting of Type Material:

Variscan granitic pegmatite; formed together with (Al,Ta,Nb)-bearing titanites, from Ca-contaminated fluxed melts or early hydrothermal fluids, during increasing a(Ti) & a(Nb) but decreasing a(Ta), almost paralelly to polycrase-(Y) and euxenite-(Y)

Associated Minerals at Type Locality:

Reference:

Pieczka, Adam, Hawthorne, Frank C., Ma, Chi, Rossman, George R., Szełęg, Eligiusz, Szuszkiewicz, Adam, Turniak, Krzysztof, Nejbert, Krzysztof, Ilnicki, Sławomir, Buffat, Philippe, Rutkowski, Bogdan (2017) Żabińskiite, ideally Ca(Al0.5Ta0.5)(SiO4)O, a new mineral of the titanite group from the Piława Górna pegmatite, the Góry Sowie Block, southwestern Poland. Mineralogical Magazine, 81 (3) 591-610 doi:10.1180/minmag.2016.080.110

Synonyms of ŻabińskiiteHide

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Relationship of Żabińskiite to other SpeciesHide

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Other Members of Titanite Group:

Related Minerals - Strunz-mindat GroupingHide

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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 ŻabińskiiteHide

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References for ŻabińskiiteHide

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Reference List:

Pieczka, Adam, Hawthorne, Frank C., Ma, Chi, Rossman, George R., Szełęg, Eligiusz, Szuszkiewicz, Adam, Turniak, Krzysztof, Nejbert, Krzysztof, Ilnicki, Sławomir, Buffat, Philippe, Rutkowski, Bogdan (2017) Żabińskiite, ideally Ca(Al0.5Ta0.5)(SiO4)O, a new mineral of the titanite group from the Piława Górna pegmatite, the Góry Sowie Block, southwestern Poland. Mineralogical Magazine, 81 (3) 591-610 doi:10.1180/minmag.2016.080.110

Localities for ŻabińskiiteHide

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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.