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2 days ago · In geology and mineralogy, a mineral or mineral species is, broadly speaking, a solid substance with a fairly well-defined chemical composition and a specific crystal structure that occurs naturally in pure form.
May 22, 2024 · Learn about mineral, a naturally occurring homogeneous solid with a definite chemical composition and a highly ordered atomic arrangement. Explore the classification, properties, and uses of minerals, as well as some examples and related topics.
4 days ago · Quartz, widely distributed mineral of many varieties that consists primarily of silica, or silicon dioxide. Minor impurities such as lithium, sodium, potassium, and titanium may be present. Quartz has great economic importance. Learn more about quartz in this article.
- The Editors of Encyclopaedia Britannica
2 days ago · A comprehensive online resource for mineralogical information and images of 4,714 mineral species. Search by chemical composition, crystal structure, X-ray diffraction, classification, name, origin, and more.
May 25, 2024 · mica, any of a group of hydrous potassium, aluminum silicate mineral s. It is a type of phyllosilicate, exhibiting a two-dimensional sheet or layer structure. Among the principal rock-forming minerals, micas are found in all three major rock varieties—igneous, sedimentary, and metamorphic.
May 25, 2024 · Mineralogy articles from across Nature Portfolio. Mineralogy is the study of minerals, the building blocks of rocks, which are naturally-occurring, crystalline solids with a set chemical...
4 days ago · The USGS Mineral Resources Program (MRP) delivers unbiased science and information to increase understanding of ore formation, undiscovered mineral resource potential, production, consumption, and how minerals interact with the environment.
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