Cairncrossite R150126


Name: Cairncrossite
RRUFF ID: R150126
Ideal Chemistry: Sr2Ca7-xNa2x(Si4O10)4(OH)2(H2O)15-x
Locality: Block 17, Wessels mine, Northern Cape Province, South Africa
Source: Arnold Gucsik
Owner: Arnold Gucsik
Description: Massive colorless to white. Data are from the original description of the type sample. Photo is courtesy of Bruce Cairncross, 7 mm width.
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Gyrolite (5) ]
RAMAN SPECTRUM 
RRUFF ID:
Sample Description: Unoriented sample
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BROAD SCAN WITH SPECTRAL ARTIFACTS
RRUFF ID: R150126
Wavelength:
Sample Description: Unoriented sample
Instrument settings: WITec300 532nm @ 100% of 8.8 mW
POWDER DIFFRACTION 
RRUFF ID: R150126.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 9.624(2)Å    b: 9.634(2)Å    c: 15.657(3)Å
alpha: 100.80(1)°    beta: 91.22(1)°    gamma: 119.80(10°   Volume: Å3    Crystal System: triclinic
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REFERENCES for Cairncrossite

Williams P A, Hatert F, Pasero M, Mills S J (2013) IMA Commission on new minerals, nomenclature and classification (CNMNC) Newsletter 16. New minerals and nomenclature modifications approved in 2013, Mineralogical Magazine, 77, 2695-2709   [view file]

Cámara F, Uvarova Y, Gagne O C, Belakovskiy D I (2016) New mineral names, American Mineralogist, 101, 2778-2784   [view file]

Giester G, Lengauer C L, Pristacz H, Rieck B, Topa D, Von Bezing KL (2016) Cairncrossite, a new Ca-Sr (-Na) phyllosilicate from the Wessels Mine, Kalahari Manganese Field, South Africa, European Journal of Mineralogy, 28, 495-505   [view file]

Hålenius U, Hatert F, Pasero M, Mills S J (2016) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 31. New minerals and nomenclature modifications approved in 2016, Mineralogical Magazine, 80, 691-697   [view file]