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Topic: Silicate minerals

Related Topics

Cummingtonite

Silicic acid

Pyroxene

Mineral

Olivine

Albite

Chrysolite

Nonmineral

List of minerals

Montmorillonite

Clay

Phenacite

Spodumene

Muscovite

Mica

	Glossary Of Meteorite Terms & Definitions - Meteorites Australia
		Basalt - are volcanic rocks primarily composed of the minerals olivine, pyroxene and feldspar.
		Minerals - are naturally occurring substances which have a definite chemical composition and a characteristic crystalline structure, colour, and hardness.
		Stony / Stones (meteorites) - meteorites composed predominantly of silicate minerals.
	www.meteorites.com.au /glossary.html (1327 words)

	Silicate Summary
		Silicate minerals can be derived from the quartz, tridymite, and crystoballite structures by replacing a subset of the silicon ions with ions of a lower charge, together with placing other cations in places between tetrahedra to achieve overall neutrality.
		Silicate minerals are noted for their tetrahedral form.
		In geology and astronomy, the term silicate is used to denote a type of rock that consists predominately of silicate minerals.
	www.bookrags.com /Silicate (1354 words)

	NationMaster - Encyclopedia: Felsic (Site not responding. Last check: )
		Felsic is a term used in geology to refer to silicate minerals, magmas, and rocks which are enriched in the lighter elements such as silica, oxygen, aluminium, sodium, and potassium.
		In geology, mafic minerals and rocks are silicate minerals, magmas, and volcanic and intrusive igneous rocks that have relatively high concentrations of the heavier elements.
		Felsic is a term used in geology to refer to silicate minerals, magmas, and rocks which are enriched in the lighter elements, such as silica and oxygen, aluminum, and potassium.
	www.nationmaster.com /encyclopedia/Felsic (1849 words)

	NationMaster - Encyclopedia: Silicate (Site not responding. Last check: )
		In different minerals the tetrahedra show different degrees of polymerization: they occur singly, joined together in pairs, in larger finite clusters including rings, in chains, double chains, sheets, and three-dimensional frameworks.
		In geology and astronomy, the term silicate is used to denote types of rock that consists predominantly of silicate minerals.
		Mineralogically, silicate minerals are divided according to structure of their silicate anion into the following groups: Mineralogy is an earth science that involves the chemistry, crystal structure, and physical (including optical) properties of minerals.
	www.nationmaster.com /encyclopedia/Silicate (1560 words)

	Silicates
		Many minerals are silicate minerals: combinations of silicon and oxygen with other common elements of the Earth's crust.
		tetrahedra are the basis for classification of silicate minerals.
		Feldspars are together the most abundant group of minerals in the crust and are especially important in the classification of igneous rocks.
	www.stmarys.ca /conted/webcourses/GEO/GEO99/pubmaterial/smat.html (735 words)

	G150- Matter and Minerals
		All silicate minerals are constructed of Si-O tetrahedrons.
		Garnets are a group of silicate minerals, Some species (often red) are used for gemstones.
		Other mineral classes are named for the ion that is associated with oxygen or, they are elements like copper or gold..
	www.calstatela.edu /faculty/acolvil/minerals.html (1105 words)

	Kids.Net.Au - Encyclopedia > Silicate (Site not responding. Last check: )
		It is also used to denote the salts of silica or of one of the silicic acids[?].
		Silicate minerals are noted for their tetrahedral form.
		Most of the Earth's crust is made up of silicate rocks, as are the crusts of other terrestrial planets.
	www.kids.net.au /encyclopedia-wiki/si/Silicate (171 words)

	CALCSILICATES Chapter 12. Mineral assemblages
		The colorful minerals and those which fluoresce in ultraviolet were likely selectively overcollected, and the less-attractive amphiboles, pyroxenes, and feldspars were likely grossly undercollected, relative to their natural abundance.
		Frondel and Baum remarked that “the presence of [such] minerals in the ore units and their absence in the calcsilicate units may mark an increasing content of siliceous material in a passage from the purely oxidic or carbonate-containing precipitates of the original deposit, that yielded the massive franklinite-willemite-zincite ore, to the relatively siliceous units...
		The basic petrographic relations of the calcium silicate minerals, of zinc minerals in general, and of willemite in particular, are largely unstudied; this is a significant gap in our knowledge of these ore deposits.
	www.simplethinking.com /dunn/ch12/calcsilicate_assemblages.stm (2215 words)

	Silicate Minerals (Site not responding. Last check: )
		Elements, Oxides, Carbonates, etc. The silicates are the largest, the most interesting and the most complicated class of minerals by far.
		amphiboles are a family of silicate minerals that form prism or needle...
		DOE Document - Silicate minerals and the interferon system Natural-occurring minerals representative of six silicate classes were examined for their influence on interferon induction by influenza virus in Rhesus monkey kidney (LLC-MK/sub 2/) cell monolayers.^Minerals within the classes nesosilicate,...
	www.vitamin-web.biz /vitamin/silicate-minerals.php (322 words)

	All about skarns
		The influx of meteoric water and the consequent destruction of skarn minerals during retrograde alteration is one of the distinctive features of skarn formation in a shallow environment.
		Skarn minerals consist dominantly of garnet and pyroxene with lesser epidote, ilvaite, and actinolite; all are iron-rich (Purtov et al., 1989).
		The sulfide minerals associated with garnet and pyroxene skarn are dominantly arsenopyrite, loellingite, and pyrrhotite.
	www.wsu.edu:8080 /~meinert/aboutskarn.html (19814 words)

	Formation rates of calc-silicate minerals deposited inside drillhole casing, Ngatamariki geothermal field, New Zealand
		Scaling due to mineral precipitation in discharging geothermal wells is usually an unwelcome phenomenon, commonly involving deposition of calcite, aragonite, silica, sulfides, and occasionally magnetite and precious metal precipitates (Arnórsson, 1981; Brown, 1986).
		The mineral assemblage of the ejecta is very similar to the assemblage of drusy minerals present in cavities in core from 1582 to 1586 m; this assemblage was not found elsewhere.
		Assuming that these minerals started forming when these temperatures were reached in the well, then the maximum growing time for wairakite and prehnite is still almost the full 472 days; epidote may have started crystallizing only 10 days after well completion.
	www.minsocam.org /msa/collectors_corner/arc/geothermal.htm (2541 words)

	Photoglossary - Silicates - Io: Jupiter's Volcanic Moon
		All rocks are composed of minerals, and minerals are composed of one or more chemical elements.
		The most important silicate minerals are quartz, feldspar, mica, amphibole, pyroxene, and olivine.
		All silicate minerals contain oxygen and silicon atoms, and these atoms organize into a structure called the silicon-oxygen tetrahedron.
	www.planetaryexploration.net /jupiter/io/photoglossary/silicates.html (319 words)

	Search Results for "Silicate minerals"
		...asbestos, mineral, common name for any of a variety of silicate minerals within the amphibole and serpentine groups that are fibrous in structure and more or less...
		...Any one of a family of hydrous aluminum silicate minerals, whose molecules enclose cations of sodium, potassium, calcium, strontium, or barium, or a corresponding...
		...Any of a group of micaceous hydrated silicate minerals related to the chlorites and used in heat-expanded form as insulation and as a planting medium.
	www.bartleby.com /cgi-bin/texis/webinator/sitesearch?FILTER=&query=Silicate+minerals (351 words)

	silicate minerals (Site not responding. Last check: )
		Silicate Minerals Below is a gallery of Silicate Group mineral specimens for sale from John Betts - Fine Minerals in New York City, NY.
		The silicate minerals in the stone add to its weight, giving it a specific gravity ranging from 1.98 to 2.5 times that of pure water.
		Rock-Forming (Silicate) Minerals Silicates have variable structures, but all contain a basic Si-O tetrahedral anion; various cations are bonded to these anions to form minerals such as quartz...
	www.mega-vitamins-nutrition.com /silicateminerals (492 words)

	NMBGMR Circular 89 (Site not responding. Last check: )
		In this report, the oxygen-silicon ratio for a representative series of silicate minerals is correlated to the degree of adsorption on the surface of the mineral when it is immersed in water.
		In these papers it was demonstrated that the reaction between the silicate mineral particles and acidic water involves mainly an exchange of metal ions for hydrogen ions on the surface of the solid, leading to an increase in pH of the aqueous phase.
		It was then theorized that upon the fracturing of a silicate mineral, the oxygen-metal bond, which is almost entirely ionic in character, will break more easily than the stronger oxygen-silicon bond, resulting in a greater number of unsatisfied negative forces on the surface.
	geoinfo.nmt.edu /publications/circulars/89/home.html (485 words)

	Reference.com/Encyclopedia/Magma
		When rocks melt they do so incrementally and gradually; most rocks are made of several minerals, all of which have different melting points, and the phase diagrams that control melting commonly are complex.
		Silicate melts are composed mainly of silicon, oxygen, aluminum, alkalis (sodium, potassium, calcium), magnesium and iron.
		Silicon atoms are in tetrahedral coordination with oxygen, as in almost all silicate minerals, but in melts atomic order is preserved only over short distances.
	www.reference.com /browse/wiki/Magma (1146 words)

	GES Class Descriptions
		The crystalline state: physical and chemical properties of minerals; occurrence, association, and origin of the silicate and more important non-silicate minerals.
		History of oceanography and its technology; crustal movements; the ocean as a source of mineral resources; the variety of ocean life such as jellyfish and sharks, and their danger; whales and the human perspective of "lower" life; sound and submarine warfare, waves and their potential energy and destructive capacity; human pollution.
		Microscopic and megascopic examination of textures and constituent minerals.
	www.bradley.edu /las/ges/descript.htm (750 words)

	Mineral Gallery - the Silicate Class
		The silicates are the largest, the most interesting and the most complicated class of minerals by far.
		Approximately 30% of all minerals are silicates and some geologists estimate that 90% of the Earth's crust is made up of silicates.
		Sorosilicates have two silicate tetrahedrons that are linked by one oxygen ion and thus the basic chemical unit is the anion group (Si2O7) with a negative six charge (-6).
	mineral.galleries.com /minerals/silicate/class.htm (1499 words)

	Mineral Information Institute - Common Minerals
		Antimony is used as a hardening alloy for lead, especially storage batteries and cable sheaths, also used in bearing metal, type metal, solder, collapsible tubes and foil, sheet and pipes, and semiconductor technology.
		A rock-forming mineral, industrially important in glass and ceramic industries, pottery and enamelware, soaps, abrasives, bond for abrasive wheels, cements and concretes, insulating compositions, fertilizer, poultry grit, tarred roofing materials, and as a sizing (or filler) in textiles and paper.
		Albite is a feldspar mineral and is a sodium aluminum silicate.
	www.mii.org /commonminerals.html (2525 words)

	Changes of Ca and Mg silicate minerals induced by grinding and interaction with water
		In the course of grinding alongside to hydration and amorphisation considerable sorption of atmospheric CO2 by ground minerals occur.
		According to FT-IR spectra carbon dioxide is present in the ground minerals, in the same form as in silicate glasses after dissolution of CO2 at high temperatures and pressures relevant to the magma state.
		The structure of silicate is less important in the carbonisation process during grinding.
	epubl.luth.se /1402-1757/1999/58/index.html (201 words)

	Stability of Epidote Minerals
		A NUMBER of silicate minerals have proved difficult to synthesize by the commonly employed methods involving hydrothermal crystallization of glasses or reactive oxide mixes of suitable composition.
		The results presented here indicate that with these minerals nucleation is a sluggish process at low pressures, and if this step is by-passed, growth is readily achieved from the phases which normally form in synthesis.
		This sluggish nucleation is possibly related to the structure of the minerals.
	www.nature.com /nature/journal/v187/n4736/abs/187497a0.html (191 words)

	Silicate Structures, Olivines, Garnets, & Aluminosilicates
		In order to discuss the silicates and their structures it is first necessary to remember that the way atoms are packed together or coordinated by larger anions, like oxygen depends on the radius ratio of the cation to the anion, Rx/Rz.
		In this case the basic structural group is Si The micas, clay minerals, chlorite, talc, and serpentine minerals are all based on this structure.
		The minerals quartz, cristobalite, and tridymite all are based on this structure.
	www.tulane.edu /~sanelson/eens211/silicate_structures.htm (1029 words)

	Silicate
		In different minerals the tetrahedra show different degrees of polymerization, and may be joined together in chains, double chains, sheets, and three-dimensional frameworks.
		In geology and astronomy, the term silicate is used to denote a type of rock that consists predominately of silicate minerals.
		Mineralogically, silicate minerals are divided according to their molecular structure into the following groups:
	www.dejavu.org /cgi-bin/get.cgi?ver=93&url=http%3A%2F%2Farticles.gourt.com%2F%3Farticle%3Dsilicate%26type%3Den (237 words)

	Geoscience - The Earth - Earth in its Surroundings - The Solar System
		It doesn't have an atmosphere and its high density suggests that it is composed of a relatively large metallic core, surrounded by a silicate mantle.
		The silicate minerals occur as subrounded to rounded grains called chondrules.
		Lunar highlands: are the oldest parts of the Moon and are largely composed of the mineral plagioclase (hence the light colour).
	www.austmus.gov.au /geoscience/earth/solar.htm (2252 words)

	SchoolNotes.com - Notes Page
		A Mineral is a naturally occurring, inorganic solid with a definite composition and an orderly arrangement of atoms.
		Steel is not a mineral because it is man-made.
		Water is not a mineral because it is a liquid.
	www.schoolnotes.com /33177/gkoch.html (1303 words)

	QUARTZ (Silicon Dioxide)
		These minerals have their own unique structures although they share the same chemistry, hence the term polymorph, which means many forms.
		This structure is not like the structure of the chain silicates or inosilicates whose silicate tetrahedronal chains are not directly connected to each other.
		Associated Minerals are numerous and varied but here are some of the more classic associations of quartz (although any list of associated minerals of quartz is only a partial list): amazonite a variety of microcline, tourmalines especially elbaite, wolframite, pyrite, rutile, zeolites, fluorite, calcite, gold, muscovite, topaz, beryl, hematite and spodumene.
	www.galleries.com /minerals/silicate/quartz/quartz.htm (1104 words)

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