Goldschmidtite R190009

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Record 1628 of 4084  

Name: Goldschmidtite
RRUFF ID: R190009
Ideal Chemistry: KNbO3
Locality: Koffiefontein, South Africa
Source: Nicole Meyer
Owner: Nicole Meyer
Description: The mineral is found as an inclusion in a diamond. This is the type sample.
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Perovskite (41) ]
CHEMISTRY 
RRUFF ID: R190009.2
Sample Description: Microprobe Fragment
Measured Chemistry: (K0.504La0.150Sr0.133Ba0.092Ce0.078Ca0.002Th0.001)(Nb0.695Cr0.192Fe0.051Al0.014Mg0.036Ti0.011)O3
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented crystal inside of a diamond
Instrument settings: Northwestern U custom Raman 458.5 nm @ 100% of 8mW
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R190009
Wavelength:
Sample Description: Unoriented crystal inside of a diamond
Instrument settings: Northwestern U custom Raman 458.5 nm @ 100% of 8mW
POWDER DIFFRACTION 
RRUFF ID: R190009
Sample Description: Single crystal
Cell Refinement Output: a: 3.98755(12)Å    b: 3.98755(12)Å    c: 3.98755(12)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 63.4042(55)Å3    Crystal System: cubic
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REFERENCES for Goldschmidtite

Hålenius U, Hatert F, Pasero M, Mills S J (2018) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 44. New minerals and nomenclature modifications approved in 2018, Mineralogical Magazine, 82, 1015-1021   [view file]

Meyer N A, Wenz M D, Walsh J P S, Jacobsen S D, Locock A J, Harris J W (2019) Goldschmidtite, (K,REE,Sr)(Nb,Cr)O3: A new perovskite supergroup mineral found in diamond from Koffiefontein, South Africa, American Mineralogist, 104, 1345-1350