Knowra Mineralogy Mineralogy Mineralogy is the branch of geology that studies minerals, including their composition, crystal structures, physical properties, formation, and distribution.
Mineral : A naturally occurring solid with an ordered atomic structure and a characteristic chemical composition. Mineralogy studies these naturally formed crystalline substances.
Crystallization : The formation of an ordered solid as atoms or molecules assemble into a crystal. Minerals grow when components crystallize from melts, solutions, or vapors.
X-ray diffraction : A technique that identifies crystal structures by measuring how X-rays diffract from a material. Diffraction patterns distinguish mineral phases and reveal their crystal structures.
Georgius Agricola : A sixteenth-century German scholar whose writings described mining, metallurgy, and mineral substances. His works helped establish systematic descriptions of minerals and mining practices.
IMA Commission on New Minerals, Nomenclature and Classification : The International Mineralogical Association commission responsible for approving mineral names and species. Its standards determine which proposed substances qualify as recognized mineral species.
Crystal structure : The repeating three-dimensional arrangement of atoms, ions, or molecules in a crystalline solid. Atomic arrangement distinguishes minerals that share a chemical formula.
Silicate minerals : Minerals built from silicon–oxygen tetrahedra, often combined with other elements. Silicates dominate Earth’s crust and illustrate structural diversity in minerals.
Scanning electron microscope : An instrument that scans a specimen with electrons to produce detailed images of its surface. Electron imaging exposes mineral textures too fine for ordinary optical microscopy.
Nicolaus Steno : A seventeenth-century scientist who formulated principles about crystal faces and geological layering. His law of constant interfacial angles linked crystal form to internal regularity.
Deep carbon cycle : The movement and transformation of carbon through Earth’s mantle, crust, oceans, and atmosphere over geological time. Minerals store and transport carbon within Earth’s interior.
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