FACTOID # 41: On the probability of not reaching 40 graph, the top 34 countries are all African.
 
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Encyclopedia > Smoky quartz

  Results from FactBites:
 
Quartz - Wikipedia, the free encyclopedia (660 words)
Quartz is a common constituent of granite, sandstone, limestone, and many other igneous, sedimentary, and metamorphic rocks.
Quartz is the most common material identified as the mystical substance maban in Australian Aboriginal mythology.
Quartz is also a type of piezoelectric crystal that creates electricity through a process called piezoelectricity when mechanical stress is put upon it.
Color smoky quartz and amethyst (10483 words)
The nature of the pigments of smoky quartz and amethyst was investigated from the standpoints of the occurrence and genesis of those minerals, the effect of heat and of radiations upon the colors, the transmission of light, and analysis for the various impurities.
The occurrence and genesis of smoky quartz and amethyst.
All of the silica recovered from the smoky quartz in excess of the blanks was assumed to be derived from free silicon.
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