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29 Ιαν 2023 · A mineral is a natural solid with a defined chemical composition and crystalline structure. Most minerals are inorganic and form from geological processes. A mineral can be a pure elements or a compound. It is not a mixture of two or more substances. Examples of Minerals
Minerals are materials that meet five requirements. They are: 1) naturally occurring, 2) inorganic, 3) solids, 4) with a definite chemical composition, and, 5) an ordered internal structure.
Minerals can have a wide range of physical properties, including color, luster, hardness, cleavage, fracture, streak, specific gravity, crystal habit, and solubility, among others. These properties can be used for mineral identification and characterization.
This Mineral Names Dictionary contains mineral names that the average mineral collector will encounter while collecting minerals, attending shows and visiting museum displays. In addition to the most common min‐ eral names, there are some unofficial names which you will still find on labels.
Mindat.org Glossary of Mineralogical Terms. This page lists the latest 50 glossary entries. You can search for an entry using this form: Search glossary for: Results. fenestral. A texture in limestones exhibiting fenestrae. fenestrae. Irregular cavities found in muddy intertidal to supratidal carbonate sediments.
Complete online glossary of rocks, minerals, and gemstones.
Mineral Crystals: The beautiful purple crystals in the photo above are examples of amethyst, a purple color variety of quartz. These amethyst crystals grew in a cavity below the earth and because they grew in an open space they were able to form into six-sided prisms with pointed terminations. The prismatic habit is characteristic of amethyst.
