Optical symbols of some minerals. Interference figures of mica
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Abstract
The present paper presents the results of further investigations undertaken to determine the optical symbols of various minerals. The table provides the selected observations in mica plates. At the end of the article, more detailed data are provided regarding observations in simple and combined plates, as well as the characteristics of individual members of the group under consideration (muscovite, alomite, biotite, phlogopite, etc.).
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References
- Explication des phénomènes optiques etc. Ann. d. Mines 1876. P. 60, также: Sur les propriétés optiques etc. Ann. d. Min. 1881. P. 256.
- Rosenbusch. Mikr. Phys. I. S. 252.
- L. Duparc. Les minéraux des pegmatites des environs d’Antsirabé à Madagascar. 1910. p. 367.