by Gelogia Team | Jul 8, 2026 | Mineralogy
The continental crust is the thick, buoyant outer layer that forms Earth’s continents and continental shelves. Unlike the denser oceanic crust, continental crust is composed mainly of silica-rich (felsic to intermediate) rocks, making it less dense and capable...
by Gelogia Team | Jul 6, 2026 | Mineralogy
Earth’s mantle is the thickest layer of the planet, extending from the base of the crust to the outer core at a depth of approximately 2,900 kilometers. It accounts for nearly 84% of Earth’s volume and about 67% of Earth’s mass. Although it is mostly...
by Gelogia Team | Jul 5, 2026 | Mineralogy
Earth’s crust is the thin, outermost solid layer of our planet and contains an extraordinary variety of minerals that form the building blocks of rocks. Although more than 6,000 minerals have been identified, only a few dozen are considered rock-forming minerals...
by Gelogia Team | Jul 4, 2026 | Mineralogy
Hydrothermal minerals are minerals that crystallize from hot, mineral-rich fluids circulating through fractures, faults, and porous rocks within Earth’s crust. These fluids dissolve chemical elements from surrounding rocks or magma and transport them until...
by Gelogia Team | Jul 4, 2026 | Mineralogy
Volcanic minerals are the minerals that crystallize from lava during volcanic eruptions or from magma immediately before eruption. As molten rock rises toward Earth’s surface, pressure decreases and cooling accelerates, causing minerals to crystallize in a...
by Gelogia Team | Jul 3, 2026 | Mineralogy
Plate tectonics is the fundamental geological theory explaining the movement of Earth’s lithospheric plates and the formation of continents, oceans, mountains, volcanoes, and earthquakes. These tectonic processes also control where minerals form, how they...
