Webbiotite ( countable and uncountable, plural biotites ) ( mineralogy) A dark brown mica; it is a mixed aluminosilicate and fluoride of potassium, magnesium and iron. WebBiotite Crystal Meaning. Biotite is a mineral of the mica family and is one of the most common rock-forming minerals. It has a wide variety of uses, including in construction and cosmetics. Biotite is also a natural …
Biotite Mineral Geology and Uses - ThoughtCo
WebApr 10, 2024 · Biotite is an iron-magnesium phyllosilicate that belongs to the mica group minerals. It’s usually dark brown or black, but it can also be found in silver-gray and greenish varieties as well. Its name comes from Greek words meaning “two kinds,” referring to how two different types of ions form the crystal structure of biotite. WebGneiss is a very widespread rock type, especially in the lower parts of the continental crust, but it is also a common rock on the surface in some places (Scandinavia, Canada, and other shield areas where crystalline rocks … high speed quantum key distribution system
Biotitic Definition & Meaning - Merriam-Webster
WebFigure 6.4. 1: Garnet schist. Geologists use index minerals that form at certain temperatures and pressures to identify metamorphic grade. These index minerals also provide important clues to a rock’s sedimentary protolith and the metamorphic conditions that created it. Chlorite, muscovite, biotite, garnet, and staurolite are index minerals ... Webbiotite: 1 n dark brown to black mica found in igneous and metamorphic rock Types: lepidomelane a mica that is a biotite containing iron Type of: isinglass , mica any of … Like other mica minerals, biotite has a highly perfect basal cleavage, and consists of flexible sheets, or lamellae, which easily flake off. It has a monoclinic crystal system, with tabular to prismatic crystals with an obvious pinacoid termination. It has four prism faces and two pinacoid faces to form a pseudohexagonal crystal. Although not easily seen because of the cleavage and sheets, fracture is une… high speed police cars