High temperature crystal chemistry of K and Na fluor-richterites

Saved in:
Authors:Cameron, Maryellen; Sueno, Shigeho; Papike, J. J.; Prewitt, C. T.
Author Affiliations:Primary:
State Univ. N.Y., Dep. Earth and Space Sci., Stony Brook, NY, United States
Volume Title:American Mineralogist
Source:American Mineralogist, 68(9-10), p.924-943. Publisher: Mineralogical Society of America, Washington, DC, United States. ISSN: 0003-004X
Publication Date:1983
Note:In English. 31 refs.; illus. incl. 5 tables
Summary:Anisotropic refinements in space group I2/m using 1150-1200 reflections resulted in R factors ranging from 0.034 to 0.063. Over the temperature intervals studied, the tetrahedral distances remain statistically identical, but all other mean polyhedral distances increase significantly. Differential polyhedral expansion is accompanied by straightening of the tetrahedral chains and by increased displacement of the double chains relative to each other. The behavior of the richterite structures at elevated temperatures is generally similar to that of tremolite.—Modified journal abstract. [J.A.Z.]
Subjects:Amphibole group; Cell dimensions; Chain silicates; Clinoamphibole; Coordination; Crystal chemistry; Crystal structure; Expansion; Experimental studies; Mineral data; Minerals; Polyhedra; Refinement; Richterite; Silicates; Synthetic materials; Thermal properties; Clinoamphobole; Potassium fluor-richterite; Potassium richterite; Sodium richterite
Abstract Numbers:84M/2519
Record ID:1984024340
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute.
Tags: Add Tag
No Tags, Be the first to tag this record!
Be the first to leave a comment!
You must be logged in first