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Quartz

The quartz.


  Key words: Gemstone, Mineral, Quartz  

  Frequently Asked Questions (FAQ's)  

Question: What is a mineral?
  Answer: A mineral is a naturally occurring inorganic substance. - 253

Question: Where do minerals come from?
  Answer: Most minerals are obtained by mining the ground or extracted from water. - 254

Question: What are nutritional minerals?
  Answer: Nutritional minerals are inorganic elements that are essential to the nutrition of humans, animals, and plants. These minerals are normally obtained by eating natural foods. Examples of nutritional minerals are: calcium, iron, magnesium, zinc, potassium, and sodium. - 255


Topics from our world ...

  • Agate  The agate chalcedony quartz crystal gemstones.
  • Amethyst  The purple amethyst quartz gemstone.
  • Aventurine  The aventurine quartz gemstone.
  • Calcite Quartz  The calcite quartz.
  • Carnelian  The carnelian quartz gemstone.
  • Chalcedony (3)  The chalcedony quartz.
  • Citrine  The citrine quartz.
  • Crystal (41)  The solid crystals were clear and transparent.

  External related links to the world ...  

Web Minerals
 Web Minerals

 Mineral database containing 4714 mineral species descriptions and comprehensive picture library of images.

webmineral.com - 641
The mineral and gemstone kingdom
 The mineral and gemstone kingdom

 An interactive reference guide to rocks, minerals, and gemstones.

minerals.net - 642
USGS Mineral Resources
 USGS Mineral Resources

 Do we take minerals for granted? Learn more about selected commodities.

minerals.usgs.gov - 643
Mineralogy database and Mineral collecting
 Mineralogy database and Mineral collecting

 Mineralogy database with information on minerals from around the world and thousands of photos.

mindat.org - 644



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