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Pages in category "Quartz varieties" ... Varieties of the mineral Quartz ... Fruit quartz...
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en.wikipedia.org/wiki/Category:Quartz_varieties
en.wikipedia.org/wiki/Category:Quartz_varieties
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Quartz - Wikipedia, the free encyclopedia
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Quartz is the second most abundant mineral in the Earth's continental crust (after feldspar). It is made up of a continuous framework of SiO 4 silicon-oxygen tetrahedra, with each oxygen being shar...
en.wikipedia.org/wiki/Quartz
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Quartz Group Quartz is the most common mineral found on the surface of the Earth. A significant component of many igneous, metamorphic and sedimentary rocks, this natural form of silicon dioxide is found in an impressive range of varieties and colours. ... Show Quartz Photos (5598) ... There are many names for different varieties:
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www.mindat.org/min-3337.html
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Natural Quartz at www.multicolour.com ... The quartz gems comprise several different groups including both crystalline varieties like citrine, amethyst, and rock crystal as well as the crypto-crystalline varieties like chalcedony, jasper, chrysoprase, and a host of other agates. ... Home / Gem Library / Gemstones Varieties / Quartz...
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www.multicolour.com/gemstones/quartz.html
www.multicolour.com/gemstones/quartz.html
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Natural Chrysocolla Quartz ... Quartz chrysocolla is a form of quartz which should not be confused with chrysocolla. It is known as a pseudomorph having changed its original composition but not its form. The original chrysocolla has been altered by ... Home / Gem Library / Gemstones Varieties / Chrysocolla Quartz...
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www.multicolour.com/gemstones/chrysocolla_quartz.html
www.multicolour.com/gemstones/chrysocolla_quartz.html
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A collector must always be up on the many varieties of quartz and it sometimes embarrasses a collector to have collected too many specimens of such a common mineral. But nearly all collectors concede that you can never really have enough quartz specimens.
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www.galleries.com/minerals/silicate/quartz/quartz.htm
www.galleries.com/minerals/silicate/quartz/quartz.htm
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Systematic studies of the coloration and luminescence produced by radium rays, on the one h nd, and of the absorption spectra and ultra-violet transparency on the other, have been made on four varieties of quartz, namely, the colourless, the smoky, the citrine and the rose, in their crystalline and vitreous states.
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www.iop.org/EJ/abstract/0959-5309/57/1/308
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varieties, physical properties ... The most common gem varieties of quartz are amethyst and citrine ... View some images of quartz varieties...
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seismo.berkeley.edu/~jill/wisc/Lect13.html
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Natural Lemon quartz ... Home > Gemstones > Varieties > Lemon quartz ... Varieties Guide...
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www.echinastone.com/gemstones/varieties/lemon_quartz.ht...
www.echinastone.com/gemstones/varieties/lemon_quartz.html
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