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Quartz - Wikipedia


Quartz is the second most abundant mineral in Earth's continental crust, after feldspar. .... Other opaque gemstone varieties of quartz, or mixed rocks including quartz, often including contrast...

Quartz Mineral | Photos, Uses, Properties, Pictures - Geology.com


Rock crystal quartz: Transparent "rock crystal" quartz. This specimen shows the conchoidal fracture (fracture that produces curved surfaces) that is characteristic  ...

Quartz: The mineral Quartz information and pictures


Quartz is one of the most well-known minerals on earth. It occurs in basically all mineral environments, and is the important constituent of many rocks. Quartz is ...

Quartz Rock | eBay


Find great deals on eBay for Quartz Rock in Rocks and Crystals. Shop with confidence.

University of Minnesota's Mineral Pages: Quartz


Quartz is a common component of silica-rich igneous rocks, forming up to 25% of the volume of granites. It also occurs in hydrothermal veins and pegmatites.

Quartz: Quartz mineral information and data. - Mindat.org


The more common macrocrystalline quartz is made of visible crystals or grains. Examples are rock crystals, the grains in sandstone, but also massive quartz that  ...

What is quartz? - Quatr.us


Quartz is an igneous rock made out of molecules of silicon and oxygen atoms held together in a crystal pattern. All of the silica and oxygen that make quartz ...

quartz | mineral | Britannica.com


Quartz is the second most abundant mineral in Earth's crust after feldspar. It occurs in nearly all acid igneous, metamorphic, and sedimentary rocks. It is an ...

Quartz Meanings and Uses | Crystal Vaults


Items 1 - 12 of 789 ... For all its variety, when most people speak of "crystals", they are usually referring to Rock Crystal (Clear Quartz), the six-sided prisms of pure ...

Quartz — Crystal Meanings


Alternate Names & Name Spellings: Rock Crystal, Crystal Quartz, Universal Crystal, Clear Quartz (which is the stone behind all the shades and colors).

Facts About Quartz Rocks
The quartz rock is the most prevalent mineral found on earth. It is found in granite and other rocks, such as sandstone. According to an article in the "American Mineralogist," the U.S. supply of quartz crystals come almost entirely from Brazil, but they... More »
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