Hydrokenoralstonite R060012

Name: Hydrokenoralstonite
RRUFF ID: R060012
Ideal Chemistry:2Al2F6(H2O)
Locality: Ivigtut, Greenland
Source: University of Arizona Mineral Museum 2884 [view label]
Owner: RRUFF
Description: Colorless octahedral ralstonite stained with iron oxide, associated with thomsenolite
Status: The identification of this mineral is confirmed by single-crystal X-ray diffraction and chemical analysis.
Mineral Group: [ pyrochlore (28) ]
RRUFF ID: R060012.2
Sample Description: Microprobe fragment
Measured Chemistry: Na0.70Mg0.70Al1.30(F4.18(OH)1.82)·H2O
Sample Description: Unoriented sample

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RRUFF ID: R060012
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R060012.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 9.903(2)Å    b: 9.903(2)Å    c: 9.903(2)Å
alpha: 90°    beta: 90°    gamma: 90°   Volume: 971.1(1)Å3    Crystal System: cubic
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Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Hydrokenoralstonite

American Mineralogist Crystal Structure Database Record: [view record]

Anthony J W, Bideaux R A, Bladh K W, and Nichols M C (1990) Handbook of Mineralogy, Mineral Data Publishing, Tucson Arizona, USA, by permission of the Mineralogical Society of America. [view file]

Brush G J (1871) On ralstonite, a new fluoride from Arksut-Fiord, American Journal of Science and Arts, 102, 30-31   [view file]

Pabst A (1939) Formula and structure of ralstonite, American Mineralogist, 24, 566-576   [view file]

Pauly H (1965) Ralstonite from Ivigtut, South Greenland, American Mineralogist, 50, 1851-1864   [view file]

Hitchon B, Holloway L R, Bayliss P (1976) Formation of ralstonite during low-temperature acid digestion of shales, The Canadian Mineralogist, 14, 391-392   [view file]

Effenberger H, Kluger F (1984) Ralstonite: a contribution to the knowledge of composition and crystal structure, Neues Jahrbuch für Mineralogie, Monatshefte, 1984, 97-108

Rosenberg P E (2006) Stability relations of aluminum hydroxy-fluoride hydrate, a ralstonite-like mineral, in the system AlF3–Al2O3–H2O–HF, The Canadian Mineralogist, 44, 125-134   [view file]

Hålenius U, Hatert F, Pasero M, Mills S J (2016) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC) Newsletter 32. New minerals and nomenclature modifications approved in 2016, Mineralogical Magazine, 80, 915-922   [view file]

Atencio D, Andrade M B, Neto A C B, Pereira V P (2017) Ralstonite renamed hydrokenoralstonite, coulsellite renamed fluornatrocoulsellite, and their incorporation into the pyrochlore supergroup, The Canadian Mineralogist, 55, 115-120   [view file]