Kaliophilite R061113

Name: Kaliophilite
RRUFF ID: R061113
Ideal Chemistry: KAlSiO4
Locality: Bolsena, Lazio, Italy
Source: Michael Scott S100866 [view label]
Owner: RRUFF
Description: Colorless acicular silky crystals associated with colorless prismatic apatite, orange akermanite and black augite
Status: The identification of this mineral has been confirmed only by single crystal X-ray diffraction.
RRUFF ID: R061113.2
Sample Description: Microprobe Fragment
Sample Description: Unoriented sample

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RRUFF ID: R061113
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R061113.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 26.92(1)Å    b: 26.92(1)Å    c: 8.530(4)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 5355(7)Å3    Crystal System: hexagonal

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REFERENCES for Kaliophilite

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]

Mierisch B (1887) Die Auswurfsblöcke des Monte Somma, Mineralogische und Petrographische Mittheilungen, 8, 113-189   [view file]

Bowen N L (1917) The sodium-potassium nephelites, American Journal of Science, 43, 115-132   [view file]

Gossner B, Mussgnug F (1930) Contribution to the knowledge of kaliophilite, Zeitschrift für Kristallographie, 73, 187-201

Bannister F A, Hey M H (1931) A chemical, optical, and X-ray study of nepheline and kaliophilite, Mineralogical Magazine, 22, 569-608   [view file]

Smith J V, Tuttle O F (1957) The nepheline-kalsilite system: I. X-ray data for the crystalline phases, American Journal of Science, 255, 282-305

Cellai D, Carpenter M A, Heaney P J (1992) Phase transitions and microstructures in natural kaliophilite, European Journal of Mineralogy, 4, 1209-1220

Gregorkiewitz M, Li Y, White T J, Withers R L, Sobrados I (2008) The structure of "orthorhombic" KAlSiO4-O1: evidence for Al-Si order from MAS NMR data combined with Rietveld refinement and electron microscopy, The Canadian Mineralogist, 46, 1511-1526   [view file]

Mugnaioli E, Bonaccorsi E, Lanza A E, Elkaim E, Diez-Gómez V, Sobrados I, Gemmi M, Gregorkiewitz M (2020) The structure of kaliophilite KAlSiO4, a long-lasting crystallographic problem, IUCrJ, 7, 1070