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Topic: Calcium chromium garnet


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  Garnet - Wikipedia, the free encyclopedia
Garnets are most commonly red in color but can be found in a variety of colors, including purple, red, orange, yellow, green, brown, fl, or colorless.
Garnet sand is a good abrasive, and a common replacement for silica sand in sand blasting.
Garnets are very abundant in the lower crust and mantle and thus play an important role in geochemical understanding of the Earth.
en.wikipedia.org /wiki/Garnet   (1294 words)

  
 Garnet - LoveToKnow 1911   (Site not responding. Last check: 2007-11-03)
Garnets are very widely distributed, occurring in crystalline schists, gneiss, granite, metamorphic limestone, serpentine, and occasionally in volcanic rocks.
Garnets are not only cut as gems, but are used for the bearings of pivots in watches, and are in much request for abrasive purposes.
Garnet paper is largely used, especially in America, in place of sandpaper for smoothing woodwork and for scouring leather in the boottrade.
www.1911ency.org /G/GA/GARNET.htm   (1098 words)

  
 no.5731 - Spessartite   (Site not responding. Last check: 2007-11-03)
Calcium is a soft grey alkaline earth metal that is used as a reducing agent in the extraction of thorium, zirconium and uranium.
Calcium is a rather soft, metallic element that is purified by electrolysis from calcium fluoride.
Calcium, combined with phosphate to form hydroxylapatite, is the mineral portion of human and animal bones and teeth.
spessartite.en.infoax.info   (10880 words)

  
 HighBeam Encyclopedia – Free Online Encyclopedia for Reference, Research, Facts
GARNET [garnet] name applied to a group of isomorphic minerals crystallizing in the cubic system.
The most popular variety of garnet is the ruby-red pyrope from Bohemia, S Africa, and Arizona, sold as Cape ruby and Arizona ruby.
Garnet occurs in many different kinds of rocks—grossularite, in metamorphosed impure limestones; pyrope, in basic igneous rocks; spessartite, in granite rocks; almandite, in schists and other metamorphic rocks as well as in igneous rocks; andradite, in serpentine; and uvarovite, chiefly in serpentine.
www.encyclopedia.com /html/g/garnet.asp   (506 words)

  
 Garnet   (Site not responding. Last check: 2007-11-03)
The Garnet group of minerals show crystals with a habit of dodecahedrons and trapezohedrons.
The lack of a blue Garnet was remedied in 1998 following the discovery of color-change blue to red/pink material in Bekily, Madagascar, These stones are very rare.
Knorringite is basically pyrope with a very high chromium content and is often found in kimberlites and is used as an indicator mineral in the search for diamonds.
garnet.iqnaut.net   (1180 words)

  
 Take a BrainSip
The name "garnet" comes from the Latin granatus, a grain possibly in reference to malum garanatum (pomegranate) a plant with red seeds similar in shape, size and color to some Garnet crystals.
There is a misconception that Garnets are a red gem but in fact they come in a wide variety of colors including purple, red, orange, yellow, green, brown, fl, or colorless.
One example for this is gadolinium gallium garnet, Gd Ga
garnet.brainsip.com   (1169 words)

  
 Top 20 Encyclopedia   (Site not responding. Last check: 2007-11-03)
There is a misconception that garnets are only a red gem but in fact they come in a variety of colors including purple, red, orange, yellow, green, brown, fl, or colorless.
The long dimension is 2 cm (0.8 inch)
It is found in crystalline marbles and schists in the Ural mountains of Russia and Outukompu, Finland.
encyc.connectonline.com /index.php/Garnet   (1310 words)

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