Takedaite R140795

Name: Takedaite
RRUFF ID: R140795
Ideal Chemistry: Ca3B2O6
Locality: Fuka mine, Bitchu-cho-fuka, Takahashi City, Okayama Prefecture, Chugoku Region, Honshu Island, Japan
Source: Rock Currier [view label]
Owner: RRUFF
Description: Gray-white granular associated with nifontovite
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R140795
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (RAW) View Graph
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R140795.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 8.6406(18)Å    b: 8.6406(18)Å    c: 11.8578(33)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 766.70(16)Å3    Crystal System: hexagonal
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REFERENCES for Takedaite

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]

Schuckmann W (1969) Zur kristallstruktur des calcium-borates Ca3(BO3)2, Neues Jahrbuch für Mineralogie, Monatshefte, 1969, 142-143

Vegas A, Cano F H, García-Blanco S (1975) The crystal structure of calcium orthoborate: a redetermination, Acta Crystallographica, B31, 1416-1419

Kusachi I, Henmi C, Kobayashi S (1995) Takedaite, a new mineral from Fuka, Okayama Prefecture, Japan, Mineralogical Magazine, 59, 549-552   [view file]

Jambor J L, Pertsev N N, Roberts A C (1996) New mineral names, American Mineralogist, 81, 516-520   [view file]