Pyritised brachiopod shell from Aseri phosphorite deposit

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

Pyritised brachiopod shell (reflected light) from the Rannu Member, Kallavere formation, Tremadocian.

The shells are mineralised in CAF-apatite and enriched in REE.

Sample from the Aseri phosphorite deposit, Ida-Viru Country, Estonia.

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