Fluorcalciomicrolite R080146

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Record 4 of 15  

Name: Fluorcalciomicrolite
RRUFF ID: R080146
Ideal Chemistry: (Ca,Na,◻)2Ta2O6F
Locality: Ipé mine, Governador, Valadares, Minas Gerias, Brazil
Source: Luiz Menezes [view label]
Owner: RRUFF
Description: Small transparent orange octahedrons on muscovite and albite matrix.
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Groups: [ pyrochlore (28) ] [ microlite (15) ]
Quick search: [ All Fluorcalciomicrolite samples (9) ]
RRUFF ID: R080146.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Ca1.32Na0.37Mn0.02Fe0.01)(Ta1.51Nb0.33Ti0.15Sn0.01)2O6[F0.50(OH)0.41]
Sample Description: Unoriented Sample.

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RRUFF ID: R080146
Sample Description: Unoriented Sample.
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R080146.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 10.409(2)Å    b: 10.409(2)Å    c: 10.409(2)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 1127.7(2)Å3    Crystal System: cubic
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Calculated diffraction file.

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Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Fluorcalciomicrolite

American Mineralogist Crystal Structure Database Record: [view record]

Williams P A, Hatert F, Pasero M, Mills S J (2012) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 14, New minerals and nomenclature modifications approved in 2012, Mineralogical Magazine, 76, 1281-1288   [view file]

Andrade M B, Atencio D, Persiano A I C, Ellena J (2013) Fluorcalciomicrolite, (Ca,Na,◻)2Ta2O6F, a new microlite-group mineral from Volta Grande pegmatite, Nazareno, Minas Gerais, Brazil, Mineralogical Magazine, 77, 2989-2996   [view file]

Belakovskiy D I, Cámara F, Gagne O C, Uvarova Y (2015) New mineral names, American Mineralogist, 100, 2352-2362   [view file]

Grew E S, Bosi F, Ros L, Kristiansson P, Gunter M E (2018) Fluor-elbaite, lepidolite and Ta-Nb oxides from a pegmatite of the 3000 Ma Sinceni Pluton, Swaziland: evidence for lithium-cesium-tantalum (LCT) pegmatites in the Mesoarchean, European Journal of Mineralogy, 30, 205-218