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  • Geochemistry, Mineralogy, Petrology & Volcanology (1029 entries)
Almandine in migmatite paragneiss
Almandine in migmatite paragneiss by Sophie Graul
Graphite in a contact zone between a pegmatitic dyke and a amphibolite
Graphite in a contact zone between a pegmatitic dyke and a amphibolite by Sophie Graul
Almandines in a migmatite paragneiss from West Finland
Almandines in a migmatite paragneiss from West Finland by Sophie Graul
Sillimanite needles in a quartzite
Sillimanite needles in a quartzite by Sophie Graul
Precambrian garnet from Kopparnäs coastline, Finland.
Precambrian garnet from Kopparnäs coastline, Finland. by 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. by Sophie Graul
Micro textures of Estonian shelly phsophorites
Micro textures of Estonian shelly phsophorites by Sophie Graul
Metagabbro from the Guil Valley, Queyras, Briançon, Hautes-Alpes, France.
Metagabbro from the Guil Valley, Queyras, Briançon, Hautes-Alpes, France. by Sophie Graul
Amethyst vein from Pégut, Auvergne, France
Amethyst vein from Pégut, Auvergne, France by Sophie Graul
Eclogite from la Compointrie, Les Essarts complex, Vendée, France.
Eclogite from la Compointrie, Les Essarts complex, Vendée, France. by Sophie Graul
Rapakivi granite with typical round orthoclase crystals with oligoclase rims, Finland
Rapakivi granite with typical round orthoclase crystals with oligoclase rims, Finland by Sophie Graul
Migmatite 'sigmoid' in garnet-paragneiss
Migmatite 'sigmoid' in garnet-paragneiss by Sophie Graul
Metamorphic complex with amphibolite enclaves crossed by two generations of granitic veins
Metamorphic complex with amphibolite enclaves crossed by two generations of granitic veins by Sophie Graul
Amphibolite enclaves crossed by two generations of granitic veins
Amphibolite enclaves crossed by two generations of granitic veins by Sophie Graul
Ptygmatic fold crossing a mylonite, within a paragneiss.
Ptygmatic fold crossing a mylonite, within a paragneiss. by Sophie Graul
Close-up of hornblendes crystals in stretched amphibolite enclave
Close-up of hornblendes crystals in stretched amphibolite enclave by 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). by Sophie Graul
Detail of K-feldspars pegmatite-like vein on the Kopparnäs coastline, Finland.
Detail of K-feldspars pegmatite-like vein on the Kopparnäs coastline, Finland. by 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. by Sophie Graul
Microphotograph of a calcite geode found in a glendonite structure
Microphotograph of a calcite geode found in a glendonite structure by Sophie Graul
Hydrothermal fluorite from La Barre, France
Hydrothermal fluorite from La Barre, France by Sophie Graul
Octahedral crystal of fluorite in silica matrix.
Octahedral crystal of fluorite in silica matrix. by Sophie Graul
Hydrothermal fluorite from la Barre former mine, France
Hydrothermal fluorite from la Barre former mine, France by Sophie Graul
Fluorite octahedron from La Barre mine
Fluorite octahedron from La Barre mine by Sophie Graul
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