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Taniajacoite R140945

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Name: Taniajacoite
RRUFF ID: R140945
Ideal Chemistry: SrCaMn3+2Si4O11(OH)4·2H2O
Locality: N'Chwaning III mine, Kalahari manganese field, Northern Cape Province, South Africa
Source: Jaco and Tania Janse van Nieuwenhuizen [view label]
Owner: RRUFF
Description: Aggregates of radiating acicular brown crystals, associated with pink sugilite and dark-red lipuite. Type sample.
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ Ruizite (5) ]
CHEMISTRY 
RRUFF ID: R140945.2
Sample Description: Microprobe Fragment
Measured Chemistry: Sr(Ca0.81Sr0.19)Σ1.00(Mn3+1.90Fe3+0.15Al0.01)Σ2.06Si3.96O11(OH)4·2H2O
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: R140945
Wavelength:
Sample Description: Unoriented Raman on the primary sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
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Raman Data (Processed)
RRUFF File
POWDER DIFFRACTION 
RRUFF ID: R140945.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 9.1365(6)Å    b: 6.2567(4)Å    c: 12.0045(7)Å
alpha: 90.019(4)°    beta: 91.641(4)°    gamma: 89.899(4)°   Volume: 686.03(7)Å3    Crystal System: triclinic
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REFERENCES for Taniajacoite

American Mineralogist Crystal Structure Database Record: [view record]

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, Cairncross B, Downs R T, Evans S H (2021) Taniajacoite and strontioruizite, two new minerals isostructural with ruizite from the N'Chwaning III mine, Kalahari manganese field, South Africa, The Canadian Mineralogist, 59, 431-444   [view file]

Celestian A J (2022) New Mineral Names: Hydrous Minerals, American Mineralogist, 107, 1656-1658   [view file]