Roedderite R141093

Name: Roedderite
RRUFF ID: R141093
Ideal Chemistry: KNaMg2(Mg3Si12)O30
Locality: Emmelberg, Üdersdorf, Eifel, Germany
Source: Ch. and H. Schäfer [view label]
Owner: RRUFF
Description: Short prismatic hexagonal colorless to pale yellow crystals.
Status: The identification of this mineral has been confirmed by single-crystal X-ray diffraction.
Mineral Group: [ Milarite (17) ]
Sample Description: Unoriented sample

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RRUFF ID: R141093
Sample Description: Unoriented sample
Instrument settings: Thermo Almega XR 532nm @ 100% of 150mW
RRUFF ID: R141093.9
Sample Description: Single crystal, powder profile is calculated
Cell Refinement Output: a: 10.136(2)Å    b: 10.136(2)Å    c: 14.276(4)Å
alpha: 90°    beta: 90°    gamma: 120°   Volume: 1270.1(2)Å3    Crystal System: hexagonal
  File Type Information Close
Calculated diffraction file.

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Output file from the Bruker D8 Advance instrument. Includes device headers and XY data.

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REFERENCES for Roedderite

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]

Fuchs L H, Frondel C, Klein C (1966) Roedderite, a new mineral from the Indarch Meteorite, American Mineralogist, 51, 949-955   [view file]

Fleischer M (1969) New mineral names, American Mineralogist, 54, 326-330   [view file]

Seifert F, Schreyer W (1969) Stability relations of K2Mg5Si12O30, and end member of the merrihueite-roedderite group of meteoritic minerals, Contributions to Mineralogy and Petrology, 22, 190-207   [view file]

Hentschel G, Abraham K, Schreyer W (1980) First terrestrial occurrence of roedderite in volcanic ejecta of the Eifel, Germany, Contributions to Mineralogy and Petrology, 73, 127-130   [view file]

Armbruster T (1989) Crystal chemistry of double-ring silicates: structure of roedderite at 100 and 300 K, European Journal of Mineralogy, 1, 715-718

Alietti E, Brigatti M F, Capedri S, Poppi L (1994) The roedderite-chayesite series from Spanish lamproites: crystal chemical characterization, Mineralogical Magazine, 58, 655-662   [view file]

Gagné O C, Hawthorne F C (2016) Chemographic exploration of the milarite-type structure, The Canadian Mineralogist, 54, 1229-1247