Goldschmidtite R190009

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Record 13 of 44

	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 (44) ]

CHEMISTRY

RRUFF ID:	R190009.2
Sample Description:	Microprobe Fragment
Measured Chemistry:	(K_0.504La_0.150Sr_0.133Ba_0.092Ce_0.078Ca_0.002Th_0.001)(Nb_0.695Cr_0.192Fe_0.051Al_0.014Mg_0.036Ti_0.011)O₃
Microprobe Data File:	[ Download Excel File ]

RAMAN SPECTRUM

RRUFF ID:

Sample Description:

Unoriented crystal inside of a diamond

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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

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	Raman Data (RAW)
	RRUFF File

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 [view file]
Celestian A J (2021) New mineral names: Diamonds, dumps, and fumaroles, American Mineralogist, 106, 2028-2030 [view file]