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An X-ray Diffraction Refinement of the Crystal Structure of Natural Stellerite, Ca(Al8Si28)O72 · 28 H2O

✍ Scribed by Dr. F. Pechar; G. Mattern

Publisher: John Wiley and Sons
Year: 1986
Tongue: English
Weight: 262 KB
Volume: 21
Category: Article
ISSN: 0232-1300
DOI: 10.1002/crat.2170210812

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✦ Synopsis

An X-ray Diffraction Refinement of the Crystal Structure of Natural Stellerite, Ca(A18Sies)0,e 28 HaO An X-ray diffraction analysis was performed on a single crystal of natural stellerite, (Ca3.ssN~o.3sKo.osMgo.oe)tot. 4.06 (Al7.88Feo.o~)t~t. =7.97Si28.o2O7, . 38.25 H,O, orthorhombic, Fmmm, a = 13.625(2) 8, b = 18.284(1) A, c = 17.860(2) 8. 2 = 4, V = 4446.77 As. Refinement of 1400 independent reflections yields R = 0.0429 (R, = 0.0479). The Si(A1)-0 bond distances are determined with a precision of 0.002-5 A. The framework of stellerite is topologically the same as stilbite 4-4-1.

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