Quartz


Quartz
Description: Quartz
Image copyright: http://www.getloupe.com/v/25sydnqm
Quartz is a natural form of silicon dioxide, and is the most common mineral on the surface of the Earth. It has a significant component of many igneous, metamorphic and sedimentary rocks. It comes in various colors and varieties.

The Luster of quartz is glassy, and there are three different classifications; Macrocrysalline which are rock crystals like amethyst, tiger eye\'s, adventurine, eisenkiesel, and rose quartz. Microcrystalline which are jasper like flint, adventurine, heliotrope, plasma, and tiger eye\'s. Chalcedony like agate, carnelian, chrysoprase, and plasma.

Colors include colorless, purple, rose (pink), red, black, yellow, brown, green, blue, orange, etc. There are numerous names for different varieties.


Quartz hardness is numbered 7 on Moh’s scale and its final formula is SiO2. The streak of quartz is white. It has a poor/indistinct cleavage, and the rhombohedral cleavage is most common although there are at least six others reported.

Other names for quartz; a-Quartz, Alpha-Quartz, Azetulite, Azeztulite, B-Quarts (of Geophys. Lab), Brazillian Pebble, Conite (of Macculloch), Cornish Diamond, Konilite, Lemurian Seed Crystal, Lodolite, Low Quartz, Mexican Diamond, Quartz-alpha, Quartz-a, and Quertz.

Quartz can be used for; ore for silicon, glassmaking, frequency standards, optical instruments, silica source for concrete setting, filtering agents for sand, and is a major component of sand.

Video of Quartz:
http://www.youtube.com/watch?v=70M3YN-Azng
Links:
   Bullet  Mineral Database
   Bullet  Cryptocrystalline Definition
   Bullet  Blue Quartz Image
   Bullet  Green Quartz Image
   Bullet  Brown Quartz Image
   Bullet  Purple Quartz Image
   Bullet  Rose Quartz Image
   Bullet  Quartz Definition
   Bullet  Science Article On Quartz
   Bullet  Wiki For Quartz
This page was edited by Hannah (Teacher: Angela Ackley) using Web Poster Wizard.