Roméite R060736

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Record 26 of 27  

Name: Roméite
RRUFF ID: R060736
Ideal Chemistry: (Ca,Fe2+,Mn2+,Na)2(Sb5+,Ti4+)2O6(O,OH,F)
Locality: Le Cetine di Cotorniano, Chiusdino, Siena Province, Tuscany, Italy
Source: Michael Scott S101113 [view label]
Owner: RRUFF
Description: Brown octahedra associated with brizziite, R060611
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ pyrochlore (27) ]
Quick search: [ All Roméite samples (2) ]
RRUFF ID: R060736.2
Sample Description: Microprobe Fragment
Measured Chemistry: dark core: (Ca1.06Na0.70Fe2+0.18Mg0.06)Σ=2Sb5+2.00O6((OH)0.70O0.30)Σ=1; trace amounts of F; OH estimated by charge balance; rim: (Na1.10Sb3+0.64Fe3+0.10Mg0.07Ca0.06Mn0.02Pb0.01)Σ=2Sb5+2.00O6(OH);
Microprobe Data File: [ Download Excel File ]
Sample Description: Unoriented sample.

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RRUFF ID: R060736
Sample Description: Unoriented sample.
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R060736.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 10.303(2)Å    b: 10.303(2)Å    c: 10.303(2)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 1093.8(1)Å3    Crystal System: cubic
  File Type Information Close
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 Roméite

American Mineralogist Crystal Structure Database Record: [view record]

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Damour A A (1841) Sur la roméine, nouvelle espèce minérale, de Saint-Marcel en Piémont, Annales des Mines, 20, 247-254   [view file]

Zedlitz O (1932) Die kristallstruktur von romeit und schneebergit, Zeitschrift für Kristallographie, 81, 253-263   [view file]

Natta G, Baccaredda M (1933) Tetrossido di antimonio e antimoniati, Zeitschrift für Kristallographie, 85, 271-296   [view file]

Aia M A, Mooney R W, Hoffman C W W (1963) An x-ray study of pyrochlore fluoantimonates of calcium, cadmium, and manganese, Journal of the Electrochemical Society, 110, 1048-1054

Welin E (1968) Notes on the mineralogy of Sweden 6. X-ray powder data for minerals from Långban and the related mineral deposits of Central Sweden, Arkiv för Mineralogi och Geologi, 4, 499-541

Brugger J, Gieré R, Graeser S, Melsser N (1997) The crystal chemistry of roméite, Contributions to Mineralogy and Petrology, 127, 136-146

Atencio D, Andrade M B, Christy A G, Gieré R, Kartashov P M (2010) The pyrochlore supergroup of minerals: nomenclature, The Canadian Mineralogist, 48, 673-698   [view file]

Atencio D, Ciriotti M E, Andrade M B (2013) Fluorcalcioroméite, (Ca,Na)2Sb25+(O,OH)6F, a new roméite-group mineral from Starlera mine, Ferrera, Grischun, Switzerland: description and crystal structure, Mineralogical Magazine, 77, 467-473

Christy A G, Atencio D (2013) Clarification of status of species in the pyrochlore supergroup, Mineralogical Magazine, 77, 13-20