- Phantom crystal
Phantom quartz is a variety of
quartz , or "rock crystal", that, over the course of millions of years, forms over earlier rock crystals that already existed. It takes its name from the particular structure of itscrystallization : eachcrystal displays the outlines of numerous smallers crystals, knowns as phantoms. It is found in Austria, Brazil, Madagascar, Switzerland, and the United States.Like regular quartz, the chemical composition of phantom quartz is siliconoxygen|2, and its hardess is 7. [cite web |url=http://www.mineralminers.com/html/phqminfo.htm |title=PHANTOM QUARTZ Factsheet & Information Page |accessdate=2007-10-19 |date=
2001-01-14 |work=Mineral Inventory and Factsheet Index |publisher=Gem & Mineral Miners, Inc.] The available forms of phantom quartz are crystal groups, single crystals, crystal points, touchstone, tumbled stones; as a jewerly gemstone, unsually found in the form of as pendant. The crystallization is atrigonal crystal.References
ee also
*
Pseudomorph External links
* [http://www.rockhoundingar.com/quartz/phantom.html Rockhounding Arkansas: Phantoms]
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