Foitite R100088
Name: Foitite
RRUFF ID: R100088
Ideal Chemistry: ◻(Fe2+2Al)Al6(Si6O18)(BO3)3(OH)3(OH)
Locality: Oceanview mine, Chief Mountain, Pala District, San Diego County, California, USA
Source: Mark Mauthner
Owner: RRUFF
Description: Elongated prismatic purple to black to green crystals
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ tourmaline (49) ]
Quick search: [ All Foitite samples (3) ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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RRUFF ID: R100088
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (Processed)
RRUFF File
Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R100088.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 15.933(5)Å    b: 15.933(5)Å    c: 7.133(2)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 1568.2(3)Å3    Crystal System: hexagonal
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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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DIF File
X-ray Data (XY - RAW) View Graph
RRUFF File
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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   [view file]

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   [view file]

Balan E, Radtke G, Fourdrin C, Paulatto L, Horn H A, Fuchs Y (2023) Effect of Fe–Fe interactions and X-site vacancy ordering on the OH-stretching spectrum of foitite, European Journal of Mineralogy, 35, 105-116