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Estonia

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Sulphide and graphite-rich gneiss — Sulphide and graphite-rich gneiss Sophie Graul

Calcite vein associated with biotite and pyrrhotite in Svecofennian marble, Precambrian basement of Estonia — Calcite vein associated with biotite and pyrrhotite in Svecofennian marble, Precambrian basement of Estonia Sophie Graul

Contact aureole between tonalitic melt and diopside marble, Precambrian basement of Estonia — Contact aureole between tonalitic melt and diopside marble, Precambrian basement of Estonia Sophie Graul

Sheared and rotated almandine garnet in Precambrian gneiss from Estonia — Sheared and rotated almandine garnet in Precambrian gneiss from Estonia Sophie Graul

Deformed pyrrhotite associated with graphite in Estonian Precambrian gneisses — Deformed pyrrhotite associated with graphite in Estonian Precambrian gneisses Sophie Graul

Cross section of shelly phosphorite from Ülgase, Estonia — Cross section of shelly phosphorite from Ülgase, Estonia Sophie Graul

Cross-section of a brachiopod from the shelly phosphorite of Estonia, former Ülgase mine — Cross-section of a brachiopod from the shelly phosphorite of Estonia, former Ülgase mine Sophie Graul

Garnet with sulphide inclusions in a Precambrian biotite gneiss from the Alutaguse zone, East Estonia. — Garnet with sulphide inclusions in a Precambrian biotite gneiss from the Alutaguse zone, East Estonia. Sophie Graul

Micro textures of Estonian shelly phsophorites — Micro textures of Estonian shelly phsophorites Sophie Graul

Example of meta-gabbro/amphibolite enclaves in a granite vein (possible pegmatite texture). — Example of meta-gabbro/amphibolite enclaves in a granite vein (possible pegmatite texture). Sophie Graul

Sulphide-bearing gneiss and quartzite from the Estonian Precambrian basement, Alutaguse zone. — Sulphide-bearing gneiss and quartzite from the Estonian Precambrian basement, Alutaguse zone. Sophie Graul

Section of a drillcore containing Tremadocian black-shale — Section of a drillcore containing Tremadocian black-shale Sophie Graul

Shelly phosphorites from the Aseri deposit. — Shelly phosphorites from the Aseri deposit. Sophie Graul

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

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

Shelly phosphorite from the Aseri deposit, Estonia. — Shelly phosphorite from the Aseri deposit, Estonia. Sophie Graul

Pyritised brachiopod shell fragment from the Toolse phosphorite deposit, Estonia. — Pyritised brachiopod shell fragment from the Toolse phosphorite deposit, Estonia. Sophie Graul

Pyritised brachiopod shell fragment from the Toolse phosphorite deposit, Estonia. — Pyritised brachiopod shell fragment from the Toolse phosphorite deposit, Estonia. Sophie Graul

Carbonate-cemented shelly phosphorite — Carbonate-cemented shelly phosphorite Sophie Graul

Microphotograph of a calcite geode found in a glendonite structure — Microphotograph of a calcite geode found in a glendonite structure Sophie Graul

Shelly phosphorite drill core — Shelly phosphorite drill core Sophie Graul

Pyritised brachiopod shell from Aseri phosphorite deposit — Pyritised brachiopod shell from Aseri phosphorite deposit Sophie Graul

Pyritised shell fragment from the Toolse phosphorite deposit, Estonia — Pyritised shell fragment from the Toolse phosphorite deposit, Estonia Sophie Graul

Iron-rich shelly phosphorite, Estonia — Iron-rich shelly phosphorite, Estonia Sophie Graul

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