Foitite R050356

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Record 30 of 47  

Name: Foitite
RRUFF ID: R050356
Ideal Chemistry:    (Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Locality: Fano mine, Cahuilla Mountain, Riverside County, California, USA
Source: George Rossman
Owner: RRUFF
Description: Black prismatic, elongated and striated fragment
Status: The identification of this mineral has been confirmed by X-ray diffraction and chemical analysis
Mineral Group: [ tourmaline (47) ]
Quick search: [ All Foitite samples (3) ]
CHEMISTRY 
RRUFF ID: R050356.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Na0.50   0.50)Σ=1(Fe2+1.94Al0.77Li0.15Mn0.10Mg0.04)Σ=3.00Al6.00(BO3)3(Si5.88Al0.12)Σ=6O18(OH)4 ; B and Li not measured but estimated by charge balance
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Laser incident on prism face
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R050356
Wavelength:
Sample Description: Laser incident on prism face
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
INFRARED SPECTRUM (Attenuated Total Reflectance) 
RRUFF ID: R050356.1
Instrument settings: SensIR Durascope on a Nicolet Magna 860 FTIR
Resolution:
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POWDER DIFFRACTION 
RRUFF ID: R050356.1
Sample Description: Powder
Cell Refinement Output: a: 15.9667(4)Å    b: 15.9667(4)Å    c: 7.1431(3)Å
alpha: 90.°    beta: 90.°    gamma: 120.°   Volume: 1577.08(8)Å3    Crystal System: hexagonal
  File Type Information Close
Calculated diffraction file.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

  File Type Information Close
Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Foitite

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]

MacDonald D J, Hawthorne F C (1993) Foitite,    [Fe2+2(Al,Fe3+)]Al6Si6O18(BO3)3(OH)4, a new alkali-deficient tourmaline: description and crystal structure, American Mineralogist, 78, 1299-1303   [view file]

Pezzotta F, Hawthorne F C, Cooper M A, Teertstra D K (1996) Fibrous foitite from San Piero in Campo, Elba, Italy, The Canadian Mineralogist, 34, 741-744   [view file]

Gashrova B, Mihailova B, Konstantinov L (1997) Raman spectra of various types of tourmaline, European Journal of Mineralogy, 9, 935-940

Dyar M D, Taylor M E, Lutz T M, Francis C A, Guidotti C V, Wise M (1998) Inclusive chemical characterization of tourmaline: Mössbauer study of Fe valence and site occupancy, American Mineralogist, 83, 848-864   [view file]

Francis C A, Dyar M D, Williams M L, Hughes J M (1999) The occurrence and crystal structure of foitite from a tungsten-bearing vein at Copper Mountain, Taos County, New Mexico, The Canadian Mineralogist, 37, 1431-1438   [view file]

Hawthorne F C, Henry D J (1999) Classification of the minerals of the tourmaline group, European Journal of Mineralogy, 11, 201-215

Kahlenberg V, Velickov B (2000) Structural investigations on a synthetic alkali-free hydrogen-deficient Fe-tourmaline (foitite), European Journal of Mineralogy, 12, 947-953

Novák M, Taylor M C (2000) Foitite: formation during late stages of evolution of complex granitic pegmatites at Dobrá Voda, Czech Republic, and Pala, California, U.S.A., The Canadian Mineralogist, 38, 1399-1408   [view file]

Medaris L G, Fournelle J H, Henry D J (2003) Tourmaline-bearing quartz veins in the Baraboo quartzite Wisconsin: occurrence and significance of foitite and "oxy-foitite", The Canadian Mineralogist, 41, 749-758   [view file]

Henry D J, Novák M, Hawthorne F C, Ertl A, Dutrow B L, Uher P, Pezzotta F (2011) Nomenclature of the tourmaline-supergroup minerals, American Mineralogist, 96, 895-913   [view file]

Ertl A, Schuster R, Hughes J M, Ludwig T, Meyer H-P, Finger F, Dyar M D, Ruschel K, Rossman G R, Klötzli U, Brandstätter F, Lengauer C L, Tillmanns E (2012) Li-bearing tourmalines in Variscan granitic pegmatites from the Moldanubian nappes, Lower Austria, European Journal of Mineralogy, 24, 695-715

Bačík P, Ertl A, Števko M, Giester G, Sečkár P (2015) Acicular zoned tourmaline (magnesio-foitite to foitite) from a quartz vein near Tisovec, Slovakia: the relationship between crystal chemistry and acicular habit, The Canadian Mineralogist, 53, 221-234

Watenphul A, Burgdorf M, Schlüter J, Horn I, Malcherek T, Mihailova B (2016) Exploring the potential of Raman spectroscopy for crystallochemical analyses of complex hydrous silicates: II. Tourmalines, American Mineralogist, 101, 970-985

Lensing-Burgdorf M, Watenphul A, Schlüter J, Mihailova B (2017) Crystal chemistry of tourmalines from the Erongo Mountains, Namibia, studied by Raman spectroscopy, European Journal of Mineralogy, 29, 257-267

Bosi F (2018) Tourmaline crystal chemistry, American Mineralogist, 103, 298-306