Hornblende is an inosilicate (chain silicate) mineral, built around double chains of silica tetrahedra. These chains extend the length of the crystal and are bonded to their neighbors by additional metal ions to form the complete crystal structure.

Hornblende is a rock-forming mineral that is an important constituent in acidic and intermediate igneous rocks such as granite, diorite, syenite, andesite, and rhyolite. It is also found in metamorphic rocks such as gneiss and schist. A few rocks consist almost entirely of hornblende.

2023年4月23日 · Hornblende is a inosilicate amphibole minerals, which are two type hornblende minerals. They are ferrohornblende and magnesiohornblende.

Named in 1789 by Abraham Gottlieb Werner from an old German term for dark minerals with no ore value and from "blende", meaning to deceive. A commonly used informal name for dark …

2023年8月6日 · Hornblende is a dark-colored stone or mineral ranging from black, dark brown, dark green, and dark grey. Hornblende has a specific gravity between 3.0 and 3.5, and its cleavage can also be two perfect prismatic on 110. Pronouncing Hornblende can be tricky because the “e” is silent.

Hornblende, calcium-rich amphibole mineral that is monoclinic in crystal structure. Hornblende’s generalized chemical formula is (Ca,Na)2 (Mg,Fe,Al)5 (Al,Si)8O22 (OH)2.

Hornblende is a major rock-forming mineral found in many different types of metamorphic and igneous environments. Hornblende is usually an uninteresting gangue material, especially when it is confused with ore minerals due to its shiny luster. Good crystals are infrequent and are used as collector's material when found.

Crystal habit and cleavage distinguish hornblende from dark-colored pyroxenes. Is a common mineral occuring in both igneous and metamorphic rocks. It characteristically forms near other …

Hornblende is a complex inosilicate group of minerals (chain silicates). It is not a recognized mineral in its own right, but rather the general name for a group of closely related minerals.

2018年5月8日 · horn·blende / ˈhôrnˌblend / • n. a dark brown, black, or green mineral of the amphibole group consisting of a hydroxyl alumino-silicate of calcium, magnesium, and iron, occurring in many igneous and metamorphic rocks.