Thin section in PPL of shelly phosphorite from the Ülgase deposit, Estonia.
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Thin section in PPL of shelly phosphorite from the Ülgase deposit, Estonia.

by Sophie Graul, Tallinn University of Technology, Tallinn, Estonia and France

Thin section in PPL of shelly phosphorite from the Ülgase deposit, Estonia.
The area is composed of brachiopod detritus, quartz and some other detrital minerals, such as muscovite.