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2. Quartz - Wikipedia

   en.wikipedia.org/wiki/Quartz

   Quartz. Quartz is a hard, crystalline mineral composed of silica (silicon dioxide). The atoms are linked in a continuous framework of SiO 4 silicon–oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO 2. Quartz is, therefore, classified structurally as a framework silicate mineral ...

3. Mineralogy of the Pikes Peak Region - Wikipedia

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

   Mineralogy of the Pikes Peak Region. Pikes Peak seen from the Garden of the Gods. The Pikes Peak region is renowned for its rare mineral specimens. It is a favorite collecting area for amateur and serious rock hounds. Scientists from around the world come to Colorado to study the minerals of this region. Because the granite covers a large ...

4. Quartzite - Wikipedia

   en.wikipedia.org/wiki/Quartzite

   Quartzite. Quartzite is a hard, non- foliated metamorphic rock which was originally pure quartz sandstone. [1][2] Sandstone is converted into quartzite through heating and pressure usually related to tectonic compression within orogenic belts. Pure quartzite is usually white to grey, though quartzites often occur in various shades of pink and ...

5. Quartz monzonite - Wikipedia

   en.wikipedia.org/wiki/Quartz_monzonite

   Quartz monzonite. Quartz monzonite is an intrusive, felsic, igneous rock that has an approximately equal proportion of orthoclase and plagioclase feldspars. It is typically a light colored phaneritic (coarse-grained) to porphyritic granitic rock. The plagioclase is typically intermediate to sodic in composition, andesine to oligoclase.

6. Baraboo Quartzite - Wikipedia

   en.wikipedia.org/wiki/Baraboo_Quartzite

   Baraboo Quartzite is a Precambrian geological formation [1] of quartzite, found in the region of Baraboo, Wisconsin. While pure quartzite is usually white or gray, Baraboo Quartzite is typically dark purple to maroon in color, due to the presence of iron (hematite) and other impurities. [2] Baraboo Quartzite may display strata created by ...

7. Cristobalite - Wikipedia

   en.wikipedia.org/wiki/Cristobalite

   Cristobalite spherulites formed by devitrification from the obsidian matrix. Specimen from California, US; size: 5.9 cm × 3.8 cm × 3.8 cm (2.3 in × 1.5 in × 1.5 in). Cristobalite (/ krɪˈstoʊbəˌlaɪt /) is a mineral polymorph of silica that is formed at very high temperatures. It has the same chemical formula as quartz, SiO 2, but a ...

8. Shop Diane Keaton's new home decor line — with stunning ...

   www.aol.com/lifestyle/shop-diane-keatons-new...

   Of course, most of us don't have an A-list celeb's budget, but her new collection doesn't require it. The pieces here start at $12, with some of my favorites (including the stoneware bowls and ...

9. Peralta Stones - Wikipedia

   en.wikipedia.org/wiki/Peralta_Stones

   He attributes the original citation to M. Kraig Roberts. Mr. Roberts's article is titled “History of the Chain Of Possession Of The Stone Maps”. The Journal article is a history of the white stone. The white sandstone has a side showing a Priest who is assembling the Peralta Stones to form the map. The reverse side is known as the Horse Map.