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Topic: Milk quartz


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In the News (Fri 27 Nov 09)

  
  Overview of Gemstones in Silver Jewelry
Quartz occurs naturally in many colors including a white variation known as milky quartz or milk quartz.
Quartz is available in dozens of colors and is the earth's most abundant mineral.
While fabrication of minerals such as emeralds, quartz crystals and diamonds can be performed in a laboratory under specific conditions, for our purposes were are limiting our definition to include only natural minerals, not those which are man-made.
www.plumislandsilver.com /t-mineral_main_page.aspx   (1823 words)

  
 Fused quartz tubes
It is a doped quartz material that translate UV radiation into visible light, increase effect and improve on color.
It is compare with clean Fused Quartz, which absorbs essentially all UV and most visible radiation while maintaining transmittance efficiency in the infra-red spectrum range, and change UV and visible radiation for red radiation.
It is compare with milk fused quartz while have good transmittance efficiency in the infra-red spectrum range; in unit area can load a number of times energy.
www.quartz-jd.cn.net /a01.htm   (358 words)

  
  Herkimer Diamond - Quartz Crystal (New York) | Silicon dioxide, quartz formations, quartz crystals, dolomite, ...
Quartz crystals are a six-sided prism terminating with a six -sided pyramid at one end.
In nature, quartz crystals are often twinned, distorted, or so inter grown with adjacent crystals of quartz or of other minerals as to only show part of a individual crystals shape, these groupings of the quartz points are called crystal clusters.
Then there is the quartz crystal where a crystal has formed and then a second stage of growth/formation causes the silicon dioxide to form at the top of the crystal, extending the length of the overall crystal.
www.greatsouth.net /minerals/M158_Herkimer_Diamond_Quartz_Crystal.htm   (870 words)

  
  Bob's Rock Shop: Smoky Quartz Crystal   (Site not responding. Last check: )
Quartz is by far the most abundant of the polymorphic forms of silica and the most widespread and abundant mineral, making up 12% of the earth's crust by volume.
Quartz crystals are found as a common gangue material in veins of many minerals and in cavities in granite porphyries and pegmatites.
Quartz is also extremely variable in form, and may occur as well formed, elongated, hexagonal, prismatic, and sometimes enormous crystals; in compact and concretionary masses; and in microcrystalline and cryptocrystalline forms.
www.rockhounds.com /rockshop/quartz3.html   (470 words)

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