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Crystal - Wikipedia

en.wikipedia.org/wiki/Crystal

A crystal or crystalline solid is a solid material whose constituents are arranged in a highly ordered microscopic structure, forming a crystal lattice that extends in all directions. In addition, m...

Next Lecture: Where do gems form and where are they found?

nature.berkeley.edu/classes/eps2/wisc/Lect3.html

A similar, familiar processes is formation of salt crystals by evaporation of sea water. The mineral that forms is determined by what the dissolved elements are.

Where are crystals found - Answers.com

www.answers.com/Q/Where_are_crystals_found

In rocks, mines....practically everywhere. Crystals are found all around the world. One place is in caves where they can be quite large. Geodes contain crystals ...

Cave of the Giant Crystals, Mexico - Crystalinks

www.crystalinks.com/mexicocrystals.html

Naica is a lead, zinc and silver mine in which large voids have been found, containing crystals of selenite (gypsum) as large as 4 feet in diameter and 50 feet  ...

www.ask.com/youtube?q=Where Are Crystals Found&v=0wcJ4HPWau0
Jan 5, 2012 ... These are said to be some of the largest ever found in Georgia. Discovered by Jason Barrett in 2008, the crystals have become well known due ...

The Quartz Page: Rock Crystal

www.quartzpage.de/bergkristall.html

Nov 2, 2009 ... Of course it was already known that rock crystals can also be found at places that never see snow or ice. But the lack of a better theory let the ...

The Crystal Cave

www.bibliotecapleyades.net/ciencia/ciencia_crystalcave01.htm

Naica is a lead, zinc and silver mine in which large voids have been found, containing crystals of selenite (gypsum) as large as 4 feet in diameter and 50 feet  ...

Minerals, Gems Information, Facts, News, Photos -- National ...

science.nationalgeographic.com/science/earth/inside-the-earth/minerals-gems/

Large crystals found in geodes and other rocks are relatively rare. ... Many minerals form beautiful crystals, but the most prized of all are gemstones. Uncut gems ...

Secrets About Mining Herkimer Diamond Quartz Crystals ...

geology.com/articles/herkimer-diamonds.shtml

"Herkimer Diamonds" is the name given to the doubly terminated quartz crystals found in Herkimer County, New York and surrounding areas. Examples of these ...

North Carolina Gemstones: ruby, sapphire, emeralds and gold

geology.com/gemstones/states/north-carolina.shtml

Gemstones found in North Carolina include ruby, sapphire, emerald, ... These crystals are embedded in a pegmatite that is rich in quartz, feldspar, black ...

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BBC - Earth - Ten crystals with weird properties that look like magic

www.bbc.com

Jun 22, 2015 ... In 1669, Danish scientist Nicolas Steno noticed that quartz crystals, irrespective of where on Earth they were found, always showed the same ...

Where do crystals grow? | Reference.com

www.reference.com

Solutions rich in minerals found in spacious rock cavities produce large and well- formed crystals. Crystals start to grow on rock walls, on other crystals and on ...

Crystal - New World Encyclopedia

www.newworldencyclopedia.org

Jul 20, 2013 ... The scientific study of crystals and crystal formation is called crystallography. Many types of crystals are found in nature. Snowflakes, diamonds ...