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Petrology
(47 entries)
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Needles-like Calcite Crystals within Limegrits in a region of Pb/Zn Ores Occurrence
by Metwally Hamza
Outcrop of Calcite/Gypsum Full-growth Crystals
by Metwally Hamza
Epidote Occurrence within Lead/Zinc Ore Deposits
by Metwally Hamza
Lead/Zinc Ore Deposits surrounded by Iron Oxides Deposits (Hematite, Magnetite & Goethite) with Calcite/Gypsum
by Metwally Hamza
Gypsum Slice embedded in Lead/Zinc Ores Layer
by Metwally Hamza
Growth of Calcite (CaCO3) & Gypsum (CaSO4.2H2O) on Lead/Zinc Ore Deposits
by Metwally Hamza
Sample of Lead/Zinc Ores with Calcite/Gypsum Deposits as a result of the hydrothermal activity
by Metwally Hamza
Lead & Zinc Ores as a result of the hydrothermal activity
by Metwally Hamza
Lead Ore within Lime Deposits
by Metwally Hamza
Microscopic studies in economic geology
by Mohammad Goudarzi
Blue schist from the Isle of Groix
by Sophie Graul
Blue schist sample from the Isle of Groix with ferroglaucophane
by Sophie Graul
Blue schist sample from the Isle of Groix with ferroglaucophane
by Sophie Graul
Blue schist from the Isle of Groix
by Sophie Graul
Layers of muscovite in a pegmatite vein
by Sophie Graul
Epidote in blueschist
by Sophie Graul
Details of blueschists
by Sophie Graul
Feldspars in a larvikite
by Sophie Graul
Feldspars in a larvikite
by Sophie Graul
Graphite in a contact zone between a pegmatitic dyke and a amphibolite
by Sophie Graul
Almandines in a migmatite paragneiss from West Finland
by Sophie Graul
Sillimanite needles in a quartzite
by Sophie Graul
Rapakivi granite with typical round orthoclase crystals with oligoclase rims, Finland
by Sophie Graul
Migmatite 'sigmoid' in garnet-paragneiss
by Sophie Graul
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