The Journal of the Japanese Association of Mineralogists, Petrologists and Economic Geologists
Online ISSN : 1883-0765
Print ISSN : 0021-4825
ISSN-L : 0021-4825
The problem of the stability of reciprocal main axis in polysynthetic twin
Yukio TakanoKotoyo Takano
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1959 Volume 43 Issue 4 Pages 194-202

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Abstract

In the course of the crystal analyses of autunite and xanthophyllite several common crystallographical properties, in particular, constancy of reciprocal main axes observed across the stage of crystal transition were found. Similar character were also observed in silicate minerals such as quartz, feldspars and pyroxenes, and in sulfide minerals such as digenite and sphalerite.
Writers discusscd also the relation between twinning axis and reciprocal main axis, and proposed to introduce a conception of reciprocal lattice for clear and accurate descriptions of twinning, especially for those of monoclinic or triclinic crystals.

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