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2. Pegmatite - Wikipedia

   en.wikipedia.org/wiki/Pegmatite

   Pegmatite. A pegmatite is an igneous rock showing a very coarse texture, with large interlocking crystals usually greater in size than 1 cm (0.4 in) and sometimes greater than 1 meter (3 ft). Most pegmatites are composed of quartz, feldspar, and mica, having a similar silicic composition to granite.

3. List of quarries in the United States - Wikipedia

   en.wikipedia.org/wiki/List_of_quarries_in_the...

   Tataga-Matau Fortified Quarry Complex (AS-34-10), near the village of Leone on Tutuila in American Samoa, NRHP-listed, "a complex consisting of a series of basalt quarries and structures that archaeologists have interpreted as having a military defensive purpose. The site has been known since at least 1927, and was first formally surveyed in ...

4. Gemstone - Wikipedia

   en.wikipedia.org/wiki/Gemstone

   Gemstone. Group of precious and semiprecious stones—both uncut and faceted—including (clockwise from top left) diamond, uncut synthetic sapphire, ruby, uncut emerald, and amethyst crystal cluster. A gemstone (also called a fine gem, jewel, precious stone, semiprecious stone, or simply gem) is a piece of mineral crystal which, when cut or ...

5. Caesarstone - Wikipedia

   en.wikipedia.org/wiki/Caesarstone

   Aerial view of Caesarstone factory near Caesarea's Roman amphitheater Caesarstone's production line Caesarstone's quality control. Caesarstone Ltd. manufactures quartz surfaces in three different sites, two in Israel – Kibbutz Sdot Yam and the Bar Lev Industrial Zone near Karmiel, and in its new plant in Richmond Hill, GA, USA, since May 27, 2015 and sources products from third party ...

6. Mineralogy of the Pikes Peak Region - Wikipedia

   en.wikipedia.org/wiki/Mineralogy_of_the_Pikes...

   Scientists from around the world come to Colorado to study the minerals of this region. Because the granite covers a large portion of the Colorado Front Range, there are good mineral collecting areas scattered all over the Pikes Peak region. The collecting localities range from near Colorado Springs on the south to just west of Denver on the north.

7. Quartz Hills - Wikipedia

   en.wikipedia.org/wiki/Quartz_Hills

   Marie Byrd Land. Range coordinates. 85°56′S 132°50′W. /  85.933°S 132.833°W  / -85.933; -132.833. The Quartz Hills ( 85°56′S 132°50′W) is an arcuate cluster of largely ice-free hills and peaks found immediately south of Colorado Glacier along the west side of Reedy Glacier. They are part of the Transantarctic Mountains of ...