Laachite R141091
Name: Laachite
RRUFF ID: R141091
Ideal Chemistry: (Ca,Mn)2Zr2Nb2TiFeO14
Locality: In den Dellen, Laach lake volcano, Mendig, Eifel, Germany
Source: Ch. and H. Schäfer [view label]
Owner: RRUFF
Description: Prismatic red-brown crystals
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
Mineral Group: [ Zirconolite (1) ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R141091
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: R141091.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 7.316(3)Å    b: 14.143(7)Å    c: 10.148(5)Å
alpha: 90°    beta: 90.02(3)°    gamma: 90°   Volume: 1050.0(2)Å3    Crystal System: monoclinic
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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 Laachite

American Mineralogist Crystal Structure Database Record: [view record]

Della Ventura G, Bellatreccia F, Williams C T (2000) Zirconolite with significant REEZrNb(Mn,Fe)O7 from a xenolith of the Laacher See eruptive center, Eifel volcanic region, Germany, The Canadian Mineralogist, 38, 57-65   [view file]

Williams P A, Hatert F, Pasero M, Mills S J (2013) IMA Commission on new minerals, nomenclature and classification (CNMNC) Newsletter 16. New minerals and nomenclature modifications approved in 2013, Mineralogical Magazine, 77, 2695-2709   [view file]

Belakovskiy D, Cámara F, Uvarova Y, Gagne O C (2014) New mineral names, American Mineralogist, 99, 1806-1813

Chukanov N V, Krivovichev S V, Pakhomova A S, Pekov I V, Schäfer C, Vigasina M F, Van K V (2014) Laachite, (Ca,Mn)2Zr2Nb2TiFeO14, a new zirconolite-related mineral from the Eifel volcanic region, Germany, European Journal of Mineralogy, 26, 103-111   [view file]