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hornblende    音标拼音: [h'ɔrnbl,ɛnd]
n. 角闪石

角闪石

hornblende
n 1: a green to black mineral of the amphibole group; consists
of silicates of calcium and sodium and magnesium and iron

Hornblende \Horn"blende`\, n. [G., fr. horn horn blende
blende.] (Min.)
The common black, or dark green or brown, variety of
amphibole. (See {Amphibole}.) It belongs to the aluminous
division of the species, and is also characterized by its
containing considerable iron. Also used as a general term to
include the whole species.
[1913 Webster]

{Hornblende schist} (Geol.), a hornblende rock of schistose
structure.
[1913 Webster]


Amphibole \Am"phi*bole\ ([a^]m"f[i^]*b[=o]l), n. [Gr.
'amfi`bolos doubtful, equivocal, fr. 'amfiba`llein to throw
round, to doubt: cf. F. amphibole. Ha["u]y so named the genus
from the great variety of color and composition assumed by
the mineral.] (Min.)
A common mineral embracing many varieties varying in color
and in composition. It occurs in monoclinic crystals; also
massive, generally with fibrous or columnar structure. The
color varies from white to gray, green, brown, and black. It
is a silicate of magnesium and calcium, with usually
aluminium and iron. Some common varieties are {tremolite},
{actinolite}, {asbestus}, {edenite}, {hornblende} (the last
name being also used as a general term for the whole
species). Amphibole is a constituent of many crystalline
rocks, as syenite, diorite, most varieties of trachyte, etc.
See {Hornblende}.
[1913 Webster]


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  • Hornblende - Wikipedia
    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 Mineral | Uses and Properties - Geology. com
    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
  • Hornblende: Mineral information, data and localities.
    A commonly used informal name for dark green to black amphiboles, largely in the Hornblende Root Name Group including ferro-hornblende or magnesio-hornblende
  • Hornblende | Physical - Optical Properties, Occurrence, Uses
    Hornblende is a inosilicate amphibole minerals, which are two type hornblende minerals They are ferrohornblende and magnesiohornblende
  • Hornblende | Igneous Rock, Mafic Minerals, Amphibole Group - Britannica
    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 – WGNHS – UW–Madison
    Hornblende is a very common mineral found in many geologic environments It is found in many intrusive igneous rocks ranging in composition from granites to diorite to gabbros to syenites
  • Hornblende: Identification, Properties Lookalikes
    Hornblende is a black inosilicate mineral It has a hardness of 5–6 and a white or no streak
  • What Is Hornblende? How to Identify the Amphibole Mineral
    Hornblende is one of the most common and geologically informative minerals on Earth, a dark, glassy crystal found in a huge range of rocks from granite countertops to the deep roots of mountain belts
  • Hornblende Mineral Explained: Properties and Uses
    Hornblende is one of the most important amphibole minerals and a major component of many igneous and metamorphic rocks Its distinctive cleavage angles, dark color, and double-chain silicate structure make it a valuable mineral for identification and geological interpretation
  • Hornblende Mineral: Identification, Properties Uses
    Hornblende is a dark-colored amphibole mineral commonly found as a rock-forming constituent in many igneous and metamorphic environments Collectors typically look for its characteristic prismatic crystal habit and the distinctive 56 and 124-degree cleavage angles that help distinguish it from pyroxenes like augite





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