Lefontite R140428

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Record 2 of 3  


Name: Lefontite
RRUFF ID: R140428
Ideal Chemistry: Fe2Al2Be(PO4)2(OH)6
Locality: João Teodoro mine, Linópolis district, Divino das Laranjeiras, Minas Gerais, Brazil
Source: Michael Scott [view label]
Owner: RRUFF
Description: Brown prismatic crystals, associated with light-brown greifensteinite (R060588), dark green acicular gormanite (R080075), and white fine-grained leucophosphite. Type sample.
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Childrenite (12) ]
Quick search: [ All Lefontite samples (3) ]
CHEMISTRY 
RRUFF ID: R140428.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Fe1.51Mn0.39Mg0.06Ca0.03)Σ=1.99Al1.99(Be1.02Li0.08)(P0.99O4)2(OH)6 ; The BeO and Li2O were determined by ICP-MS.
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R140428
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (Processed)
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R140428.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 7.0087(3)Å    b: 10.5082(4)Å    c: 13.1179(5)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 966.1(1)Å3    Crystal System: orthorhombic
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REFERENCES for Lefontite

Williams P A, Hatert F, Pasero M, Mills S J (2015) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 23. New minerals and nomenclature modifications approved in 2014 and 2015, Mineralogical Magazine, 79, 51-58   [view file]