Meieranite R140947



Name: Meieranite
RRUFF ID: R140947
Ideal Chemistry: Na2Sr3MgSi6O17
Locality: Wessels mine, Kalahari manganese field, Northern Cape Province, South Africa
Source: Jaco and Tania Janse van Nieuwenhuizen [view label]
Owner: RRUFF
Description: Aggregates of granular blue crystals, associated with massive pale green sugilite, prismatic grey aegirine and bladed white pectolite. Type sample
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Nordite (5) ]
CHEMISTRY 
RRUFF ID: R140947.2
Sample Description: Microprobe Fragment
Measured Chemistry: Na1.96(Sr2.91Ba0.03Ca0.03Pb0.02)Σ2.99(Mg0.62Mn0.28Co0.07Fe0.01)Σ0.98Si6.03O17 ; = bright phase. Grey phase is sugilite.
Microprobe Data File: [ Download Excel File ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented Raman on the primary sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R140947
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
POWDER DIFFRACTION 
RRUFF ID: R140947.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 7.9380(2)Å    b: 10.4923(3)Å    c: 18.2560(6)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 1520.50(8) Å3    Crystal System: orthorhombic
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REFERENCES for Meieranite

Hålenius U, Hatert F, Pasero M, Mills S J (2015) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 25. New minerals and nomenclature modifications approved in 2015, Mineralogical Magazine, 79, 529-535   [view file]

Yang H, Gu X, Downs R T, Evans S H, Van Nieuwenhuizen J J, Lavinsky R M, Xie X (2019) Meieranite, Na2Sr3MgSi6O17, a new mineral from the Wessels mine, Kalahari Manganese Fields, South Africa, The Canadian Mineralogist, 57, 457-466   [view file]

Dal Bo F, Gulbransen E H, Friis H (2021) New data on nordite-(Ce) and the establishment of the nordite supergroup, Mineralogical Magazine, 85, 431-437