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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. - mindat. org
    A commonly used informal name for dark green to black amphiboles, largely in the Hornblende Root Name Group including ferro-hornblende or magnesio-hornblende according to the current IMA nomenclature
  • 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 The four end-members and the cation content of their respective compositions are as follows: hornblende, Ca2 (Mg4Al) (Si7Al);
  • Hornblende Mineral (Everything You Need to Know to ID them)
    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 - Clark Science Center
    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 amphiboles due to the complete solid solution End members include: edenite, pargasite, hastingsite and tschermakite Photomicrograph in thin section of hornblende
  • Hornblende: Description, Characteristics, and Other FAQs
    In this article, you’ll obtain answers to common questions about Hornblende What Is Hornblende? 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
  • The hornblende Mineral Group - The Mineral and Gemstone Kingdom
    Hornblende is a group name used to describe Ferro-hornblende and Magnesio-hornblende, but the term is generally more inclusive for all calcium aluminum amphiboles (Hornblende is frequently also used to describe any dark, opaque amphibole mineral without individual analysis )
  • Hornblende - HyperPhysics
    Hornblende is one of the basic silicate minerals Its composition is Ca 2 (Mg,Fe,Al) 5 (Si,Al) 8 O 22 (OH) 2 Hornblende is the most common example of the group of silicates called amphibole
  • Hornblende | Physical - Optical Properties, Occurrence, Uses
    Hornblende is a inosilicate amphibole minerals, which are two type hornblende minerals They are ferrohornblende and magnesiohornblende





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