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Milarite R070373

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Record 6 of 18  


Name: Milarite
RRUFF ID: R070373
Ideal Chemistry: KCa2(Be2AlSi12)O30·H2O
Locality: Guanajuato, Mexico
Source: Royal Ontario Museum M28150 [view label]
Owner: RRUFF
Description: Pale yellow-green hexagonal fragment associated with calcite
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Milarite (18) ]
Quick search: [ All Milarite samples (3) ]
CHEMISTRY 
RRUFF ID: R070373.2
Sample Description: Microprobe Fragment
Measured Chemistry: (K1.00Na0.03)Σ=1.03(Ca1.98Mn0.02)Σ=2(Be2.00Al1.00)Σ=3(Si11.97Al0.03)Σ=12O30·H2O; H2O assumed ideal from stoichiometry; BeO estimated by difference
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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Direction of polarization of laser relative to fiducial mark:
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R070373
Wavelength:
Sample Description: Unoriented 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: R070373.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 10.4091(8)Å    b: 10.4091(8)Å    c: 13.829(1)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 1297.7(2)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.

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DIF File
X-ray Data (XY - RAW) View Graph
RRUFF File
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REFERENCES for Milarite

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]

Kenngott A (1870) Mittheilungen an Professor G. Leonhard, Neues Jahrbuch für Mineralogie, Geologie und Palaontologie, 1870, 80-81   [view file]

Goβner B, Muβgnug F (1930) Über Alstonit und Milarit, Centralblatt für Mineralogie, Geologie und Paläontologie, 1930, 220-238

Palache C (1931) On the presence of beryllium in milarite, American Mineralogist, 16, 469-470   [view file]

Belov N V (1957) New silicate structures, Acta Crystallographica, 10, 757-758

Černý P, Hawthorne F C, Jarosewich E (1980) Crystal chemistry of milarite, The Canadian Mineralogist, 18, 41-57   [view file]

Armbruster T, Bermanec V, Wenger M, Oberhansli R (1989) Crystal chemistry of double-ring silicates: Structure of natural and dehydrated milarite at 100 K, European Journal of Mineralogy, 1, 353-362

Černý P, Hawthorne F C, Jambor J L, Grice J D (1991) Yttrian milarite, The Canadian Mineralogist, 29, 533-541   [view file]

Roth P (2007) Milarite, in Minerals first discovered in Switzerland and minerals named after Swiss individuals Kristallografik Verlag Achberg Germany 112-113

Gagné O C, Hawthorne F C (2016) Chemographic exploration of the milarite-type structure, The Canadian Mineralogist, 54, 1229-1247

Hawthorne F C, Sokolova E, Pautov L A, Agakhanov A A, Karpenko V Y (2016) Refinement of the crystal structure of berezanskite, Ti2◻2KLi3(Si12O30), Mineralogical Magazine, 80, 733-737