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Geochemistry, Mineralogy, Petrology & Volcanology (1029 entries)

The Snake in the Dinosaur Bone — The Snake in the Dinosaur Bone by Bernardo Cesare

Altered collapse at Poás volcano (Costa Rica) — Altered collapse at Poás volcano (Costa Rica) by Michael Heap

Whispy clouds above Antuco volcano (Chile) — Whispy clouds above Antuco volcano (Chile) by Michael Heap

Sunrise on the Bromo and Semeru — Sunrise on the Bromo and Semeru by Anna van den Broek

Fossilized Coral Reefs, Al-Naizak Crater Lake, Marsa Alam City, Red Sea, Egypt — Fossilized Coral Reefs, Al-Naizak Crater Lake, Marsa Alam City, Red Sea, Egypt by Metwally Hamza

Tatun Volcano Group, Northern Taiwan — Tatun Volcano Group, Northern Taiwan by ThiLan Chi Nguyen

Calcite Crystals Occurred in the Pb/Zn Ores Depositional Environment as a result of the Hydrothermal Activity — Calcite Crystals Occurred in the Pb/Zn Ores Depositional Environment as a result of the Hydrothermal Activity by Metwally Hamza

Needles-like Calcite Crystals with Pb/Zn Ores Occurrence — Needles-like Calcite Crystals with Pb/Zn Ores Occurrence by Metwally Hamza

Needles-like Calcite Crystals within Limegrits in a region of Pb/Zn Ores Occurrence — Needles-like Calcite Crystals within Limegrits in a region of Pb/Zn Ores Occurrence by Metwally Hamza

Volcanoes and glaciers — Volcanoes and glaciers by Rodrigo Balaguer-Romano

The Great Cone, Vesuvius. — The Great Cone, Vesuvius. by Vishnu Kaiprath Nambiar

Gypsum Mineral Sample — Gypsum Mineral Sample by Ahmed-M- Mohy

Outcrop of Calcite/Gypsum Full-growth Crystals — Outcrop of Calcite/Gypsum Full-growth Crystals by Metwally Hamza

Outcrop of Desert Varnish — Outcrop of Desert Varnish by Metwally Hamza

DESERT BOULDERS (due to weathering processes in the region) — DESERT BOULDERS (due to weathering processes in the region) by Metwally Hamza

Outcrop of S-shaped Stretching occurred in a layer of highly altered Limegrits — Outcrop of S-shaped Stretching occurred in a layer of highly altered Limegrits by Metwally Hamza

Outcrop of Calcite/Gypsum Deposits with Siltstone, Kaolinite, and Fanglomerates of the Red Sea Facies (EGYPT) — Outcrop of Calcite/Gypsum Deposits with Siltstone, Kaolinite, and Fanglomerates of the Red Sea Facies (EGYPT) by Metwally Hamza

Needles-like Altered Gypsum Crystals within Lime and Sands Deposits — Needles-like Altered Gypsum Crystals within Lime and Sands Deposits by Metwally Hamza

Mud Cracks Outcrop in Arid Area, Red Sea Coast, Egypt — Mud Cracks Outcrop in Arid Area, Red Sea Coast, Egypt by Metwally Hamza

Well-sorted Marine Clastics (medium- to coarse-sized) embedded within iron-oxides cement — Well-sorted Marine Clastics (medium- to coarse-sized) embedded within iron-oxides cement by Metwally Hamza

Cupper extraction from a local mine, Iran — Cupper extraction from a local mine, Iran by Mohammad Goudarzi

Epidote as a Semi-gemstone occurred within Lead/Zinc Ores and Iron Oxides Deposits — Epidote as a Semi-gemstone occurred within Lead/Zinc Ores and Iron Oxides Deposits by Metwally Hamza

Galena Ore (PbS) surrounded by Zincite Ores (Zinc Oxides, ZnO) and Iron Oxides (Hematite, Magnetite, Goethite) — Galena Ore (PbS) surrounded by Zincite Ores (Zinc Oxides, ZnO) and Iron Oxides (Hematite, Magnetite, Goethite) by Metwally Hamza

Epidote Occurrence within Lead/Zinc Ore Deposits — Epidote Occurrence within Lead/Zinc Ore Deposits by Metwally Hamza

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