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  Encyclopedia of Keywords > Nature > Natural Resources > Minerals > Hornblende   Michael Charnine

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  1. Hornblende is a common constituent of many igneous and metamorphic rocks such as granite, syenite, diorite, gabbro, basalt, andesite, gneiss, and schist.
  2. Hornblende is a common dark igneous or plutonic rock constituent. (Web site)
  3. Hornblende is a frequent result of the metamorphism of other minerals, especially of augite.
  4. Hornblende is a common rock-forming mineral in medium- and high-grade metamorphic rocks, particularly those of mafic and ultramafic composition. (Web site)
  5. Hornblende is a complex inosilicate series of minerals.


  1. The commonest form is hornblende; other species include anthophyllite, cummingtonite, tremolite, actinolite, riebeckite, and glaucophane. (Web site)
  2. Other schists are hornblende schist, talc schist, chlorite schist, and graphite schists. (Web site)
  3. Nepheline is very abundant and there is also cancrinite, sodalite, scapolite, calcite, biotite and hornblende. (Web site)


  1. Recognizable minerals include biotite, calcite, hematite, hornblende, jasper, limonite, olivine, orthoclase, plagioclase, quartz, and serpentine.
  2. Their commonest minerals are olivine, anorthite, hornblende, augite, biotite and leucite. (Web site)
  3. Smaller amounts of zircon, apatite, hornblende, chlorite sericite and sphene also occur.


  1. Granite, asbestos, feldspar, clay, hornblende, and mica are a few of the many silicate minerals. (Web site)
  2. Of these, tremolite, hornblende, and crocidolite, as well as the important varieties, asbestos and jade, are treated under their own headings.
  3. Consider also: hornblende, actinolite, asbestos, nephrite.


  1. Lapis can include the following minerals: lazurite, calcite, pyrite, sodalite, augite, diopside, enstatite, mica, hauynite, hornblende, and nosean.
  2. Basaltic compositions include plagioclase, hornblende, diopside, quartz, biotite, and almandine garnet.


  1. Subordinate phenocrysts include clinopyroxene, biotite, ilmenite, magnetite, sanidine, hornblende, quartz, and orthopyroxene. (Web site)
  2. The minerals of the first generation, or phenocrysts, of rhyolite are generally orthoclase, oligoclase, quartz, biotite, augite or hornblende. (Web site)


  1. Associated Minerals are quartz, feldspars, apatite, calcite, hornblende, garnets and schorl. (Web site)
  2. Mineral content of the sediments in order to abundance are quartz, feldspars, magnetite, staurolite, hornblende, anatase and andalusite. (Web site)
  3. Their characteristic feature is the development of the most common amphibole, hornblende, in the presence of a plagioclase feldspar and garnet.


  1. Usually it coexists with hornblende or actinolite hornblende, magnesium clinochlore chlorite, talc, serpentine - antigorite minerals or metamorphic pyroxene.
  2. Hornblende, actinolite and glaucophane are amphiboles. (Web site)


  1. It is an alkali gabbro primarily composed of plagioclase, hornblende, biotite, and titanium augite, with lesser amounts of alkali feldspar and nepheline.
  2. Diorite - An intrusive igneous rock composed chiefly of sodic plagioclase, hornblende, biotite or pyroxene. (Web site)
  3. Labradorite occurs with hornblende and augite in gabbro of plutonic rocks; also with hornblende in basalt of volcanic rocks. (Web site)
  4. These are K-feldspar-nepheline syenites containing <10% ferromagnesian minerals, usually pyroxene -, hornblende - and biotite. (Web site)

Associated Minerals

  1. Associated Minerals include calcite, feldspars such as albite, apatite, biotite, hornblende, cancrinite, sodalite and other feldspathoids. (Web site)
  2. Feldspar is generally present in excess of quartz, and accessory minerals (chiefly micas, hornblende, or more rarely pyroxene) are commonly present.
  3. Associated Minerals are olivine, serpentine, biotite, hornblende, augite, pyroxenes and diamond. (Web site)


  1. Gangue minerals are calcite, dolomite, ankerite, common hornblende, arfvedsonite, augite, aegirine-augite, albite, phlogopite, biotite, chlorite and apatite. (Web site)
  2. Accessory and alteration minerals include hornblende, biotite, apatite, pyrrhotite, chalcopyrite, serpentine, chlorite, and calcite.
  3. At the Philips Mine with it is associated with hornblende, magnetite, labradorite and apatite. (Web site)


  1. Quartz, rutile, green hornblende and biotite are often present, while garnet occurs sometimes; hypersthene is rare. (Web site)
  2. Granite also contains small amounts of dark brown, dark-green, or black minerals, such as hornblende and biotite mica.
  3. The red porphryitic corundum (ruby) crystals are set in an amphibolite matrix dominated by green hornblende with minor biotite mica. (Web site)
  4. Found in Kenya and Tanzania, anyolite is actually a metamorphic rock composed of intergrown green zoisite, black hornblende, and ruby.
  5. Hornblende has a hardness of 5 - 6, a specific gravity of 2.9 - 3.4, and is colored green, greenish-brown, opaque, brown and black.


  1. Quartz, clinopyroxene, hornblende, rutile, epidote, titanite and biotite are found as inclusions in garnet cores. (Web site)
  2. Moss Agate - Chalcedony with dense inclusions of green Hornblende.
  3. Sometimes: kyanite, garnet, hornblende, tourmaline, magnetite, and many others. (Web site)


  1. Among the accessory minerals biotite, brown hornblende, hauyne, iron oxides and apatite are the commonest; melanite and nepheline may also occur. (Web site)
  2. Andesine, andradite, apatite grp., biotite, fluorite, grossular, hornblende, magnetite, microcline, nepheline, phlogopite, plagioclase, titanite, zircon. (Web site)
  3. Common felsic minerals include quartz, biotite, muscovite mica, hornblende and the orthoclase feldspars. (Web site)


  1. Encyclopedia of Keywords > Nature > Natural Resources > Minerals
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  Short phrases about "Hornblende"
  Originally created: August 01, 2010.
  Links checked: June 07, 2013.
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