Some observations on rutherfordine

Trace Elements Investigations 584
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Abstract

The optical properties of rutherfordine, UO2CO3, previously determined on microscopic crystals, have been redetermined on considerably larger crystals; and the relations among the indices of refraction, the morphology, and the crystal structure have been examined. Rutherfordine is orthorhombic, biaxial positive, with α = 1.715, β = 1.730, γ = 1.795, 2V = 53° (calc.); X = b, Y = c (elongation, Z = a. The crystal structure of UO2CO 3 consists of layers of carbonate groups parallel to (010) with linear (O-U-O) ions normal to the layers. The indices β and γ correspond to vibration directions parallel to layers; the unexpectedly large difference in value between β and γ is ascribed to the optical anisotropy of the uranium-oxygen bonding in the layer. Indexed X-ray powder data are given.

Additional publication details

Publication type Report
Publication Subtype USGS Numbered Series
Title Some observations on rutherfordine
Series title Trace Elements Investigations
Series number 584
DOI 10.3133/tei584
Year Published 1956
Language English
Publisher U.S. Geological Survey
Description 13 p.