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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 (18) ] |
RAMAN SPECTRUM | ||||||||||||
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BROAD SCAN WITH SPECTRAL ARTIFACTS | ||||||||||||
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POWDER DIFFRACTION | |||||||
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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 |
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REFERENCES for Roedderite | |
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American Mineralogist Crystal Structure Database Record: [view record] |
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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] |
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Fuchs L H, Frondel C, Klein C (1966) Roedderite, a new mineral from the Indarch Meteorite, American Mineralogist, 51, 949-955 [view file] |
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Fleischer M (1969) New mineral names, American Mineralogist, 54, 326-330 [view file] |
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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] |
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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] |
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Armbruster T (1989) Crystal chemistry of double-ring silicates: structure of roedderite at 100 and 300 K, European Journal of Mineralogy, 1, 715-718 |
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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] |
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Gagné O C, Hawthorne F C (2016) Chemographic exploration of the milarite-type structure, The Canadian Mineralogist, 54, 1229-1247 |
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