Lefontite R140074

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Record 365 of 550  


Name: Lefontite
RRUFF ID: R140074
Ideal Chemistry: Fe2Al2Be(PO4)2(OH)6
Locality: Galiléia, Minas Gerais, Brazil
Source: Bob Jenkins
Owner: RRUFF
Description: Reddish brown elongated crystals. Associated with ushkovite (R060954), atencioite, rockbridgeite, and albite.
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: R140074.2
Sample Description: Microprobe Fragment
Measured Chemistry: (Fe1.02Mn0.81Ca0.13Mg0.04)Σ=2.00Al1.99(Be1.02Li0.08)(P0.99O4)2(OH)6 ; The BeO and Li2O contents were taken from R140428, which 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: R140074
Wavelength:
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R140074.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 6.9840(5)Å    b: 10.4957(7)Å    c: 13.2040(9)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 967.9(2)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]