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2. List of U.S. state minerals, rocks, stones and gemstones

   en.wikipedia.org/wiki/List_of_U.S._state...

   State, federal district, territory Mineral Rock or stone Gemstone Alabama [1]: Hematite (1967): Marble (1969): Star blue quartz (1990): Alaska [2] [3]: Gold (1968 ...

3. Bannerstone - Wikipedia

   en.wikipedia.org/wiki/Bannerstone

   Bannerstone, Ferruginous quartz, 2nd millennium BC. Found in Illinois. Bannerstones are artifacts usually found in the Eastern United States that are characterized by a centered hole in a symmetrically shaped carved or ground stone. The holes are typically ⁄ " to ⁄ " in diameter and extend through a raised portion centered in the stone.

4. 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.

5. Southern Illinois University Edwardsville - Wikipedia

   en.wikipedia.org/wiki/Southern_Illinois...

   The original Rock, a rose quartz boulder, was donated by the supplier of stone for the original Core Campus buildings. It was stolen during the night of October 7–8, 2003 and was found in pieces nine days later. A replacement Rock of limestone was donated by the Unimin Corporation in 2003, installed on March 14 and dedicated on April 7. The ...

6. Quartz - Wikipedia

   en.wikipedia.org/wiki/Quartz

   Quartz is, therefore, classified structurally as a framework silicate mineral and compositionally as an oxide mineral. Quartz is the second most abundant mineral in Earth's continental crust, behind feldspar. [10] Quartz exists in two forms, the normal α-quartz and the high-temperature β-quartz, both of which are chiral. The transformation ...

7. Rose quartz - Wikipedia

   en.wikipedia.org/?title=Rose_quartz&redirect=no

   From a merge: This is a redirect from a page that was merged into another page.This redirect was kept in order to preserve the edit history of this page after its content was merged into the content of the target page.