Minerals in Metamorphic Rocks Explained: Formation, Types, and Identification

by Gelogia Team | Jul 3, 2026 | Mineralogy

Metamorphic rocks form when pre-existing igneous, sedimentary, or older metamorphic rocks are transformed by elevated temperature, pressure, and chemically active fluids without completely melting. During metamorphism, unstable minerals break down and new minerals...

Minerals in Sedimentary Rocks Explained: Formation, Types, and Identification

by Gelogia Team | Jul 3, 2026 | Mineralogy

Sedimentary rocks form through the accumulation, transportation, deposition, and lithification of sediments or through the direct precipitation of minerals from water. Unlike igneous rocks that crystallize from magma, sedimentary rocks commonly contain minerals that...

Minerals in Igneous Rocks Explained: Formation, Types, and Identification

by Gelogia Team | Jul 3, 2026 | Mineralogy

Igneous rocks form when molten magma or lava cools and solidifies. During cooling, different minerals crystallize at different temperatures, producing a wide variety of igneous rock compositions and textures. These minerals, known as rock-forming minerals, make up...

Hydrothermal Alteration Explained: Types, Processes, Minerals, and Ore Deposits

by Gelogia Team | Jul 3, 2026 | Uncategorized

Hydrothermal alteration is the chemical and mineralogical transformation of rocks and minerals caused by hot, chemically active fluids circulating through Earth’s crust. These fluids dissolve, transport, and redeposit chemical elements while reacting with...

Mineral Alteration Processes Explained: Types, Mechanisms, and Geological Importance

by Gelogia Team | Jul 2, 2026 | Mineralogy

Mineral alteration is the process by which one mineral changes into another due to changes in temperature, pressure, fluid composition, or environmental conditions. Unlike simple physical weathering, alteration involves chemical reactions that modify a mineral’s...