 | | Report (issue) | | (Ce; La; Ca)4 (Fe2+ ; Mg)2 (Ti; Fe3+ )3 Si4 O22 Chevkinite-(Ce) c 2001 ° Mineral Data Publishing, version...280(3) X-ray Powder Pattern: Meade Co., Kansas, USA; some materials are metamict. 3.17 (100), 3.14 (100)...15 98.10 99.80 (1) Ural Mountains, Russia. (2) Mohave Co., Arizona, USA. Polymorphism & Series: Dimorphous...Association: USA). Titanite, monazite, apatite, cronstedtite, quartz (Aquarius Mountains, Arizona, Distribution:...Distribution: From the Ilmen Mountains, Southern Ural Mountains; the Keivy massif, Kola Peninsula; and |  | | Journal (article/letter/editorial) | | 1075–1098 Compositional variation in minerals of the chevkinite group R. MACDONALD1,* 1 2 AND H. E. BELKIN2...Center, Reston, Virginia 20192, USA ABSTR ACT The composition of chevkinite and perrierite, the most common...of the chevkinite group, is closely expressed by the formula A4BC2D2Si4O22, where A = (La,Ce,Ca,Sr,Th)...MC3+,2+ defines a linear array with r2 = 0.91. Chevkinite and perrierite are shown to be compositionally...basis of CaO, FeO*, Al2O3 and Ce2O3 abundances. Chevkinite forms mainly in chemically evolved parageneses |  | | Book (edition) | | Mineralogy American Museum of Natural History, New York, New York Research Associate, Department of Mineralogy...Toronto. Canada ~VANNOSTRAND REINHOLD COMPANY ~ NEW YORK CINCINNATI TORONTO LONDON i UI \J- MELBOURNE...Van Nostrand Reinhold Company Regional Offices: New York Cincinnati Chicago Millbrae Dallas Van Nostrand...Nostrand Reinhold Company 450 West 33rd Street, New York, N.Y. 10001 Published simultaneously in Canada...1) and AZURITE, Concepcion del Oro, Zacatecas, Mexico (13, column 2). Colar, page 108 Transpose illustrations |
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