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2. Greywacke - Wikipedia

   en.wikipedia.org/wiki/Greywacke

   Greywacke or graywacke (German grauwacke, signifying a grey, earthy rock) is a variety of sandstone generally characterized by its hardness (6–7 on Mohs scale), dark color, and poorly sorted angular grains of quartz, feldspar, and small rock fragments or sand-size lithic fragments set in a compact, clay -fine matrix.

3. Latite - Wikipedia

   en.wikipedia.org/wiki/Latite

   Latite is an igneous, volcanic rock, with aphanitic - aphyric to aphyric- porphyritic texture. It is the volcanic equivalent of monzonite. Its mineral assemblage is usually alkali feldspar and plagioclase in approximately equal amounts. Quartz is less than five percent and is absent in a feldspathoid -bearing latite, and olivine is absent in a ...

4. Epidote - Wikipedia

   en.wikipedia.org/wiki/Epidote

   Epidote is an abundant rock-forming mineral, but one of secondary origin. It occurs in marble and schistose rocks of metamorphic origin. It is also a product of hydrothermal alteration of various minerals (feldspars, micas, pyroxenes, amphiboles, garnets, and others) composing igneous rocks. A rock composed of quartz and epidote is known as ...

5. Quartz-porphyry - Wikipedia

   en.wikipedia.org/wiki/Quartz-porphyry

   Quartz porphyry from the island of Alnö, Sweden. Phenocrysts of clear glassy rounded quartz and white orthoclase feldspar are set in a fine-grained matrix. Sample is just over 10 cm long. Quartz-porphyry, in layman's terms, is a type of volcanic (igneous) rock containing large porphyritic crystals of quartz. [1][2] These rocks are classified ...

6. Quartz Vs. Granite: Which Stone Is Right For Your ... - AOL

   www.aol.com/quartz-vs-granite-stone-countertops...

   What Is Granite? Whereas quartz countertops are man-made, granite is a naturally occurring stone, quarried from the earth, then cut and polished into the countertop material so many know and love ...

7. Egyptian faience - Wikipedia

   en.wikipedia.org/wiki/Egyptian_faience

   Tile frieze with lotus and grapes. Egyptian faience is a sintered-quartz ceramic material from Ancient Egypt. The sintering process "covered [the material] with a true vitreous coating" as the quartz underwent vitrification, creating a bright lustre of various colours "usually in a transparent blue or green isotropic glass".

8. Coesite - Wikipedia

   en.wikipedia.org/wiki/Coesite

   Coesite (/ ˈkoʊsaɪt /) [3] is a form (polymorph) of silicon dioxide (Si O 2) that is formed when very high pressure (2–3 gigapascals), and moderately high temperature (700 °C, 1,300 °F), are applied to quartz. Coesite was first synthesized by Loring Coes, Jr., a chemist at the Norton Company, in 1953. [4][5]

9. Amelia Gray Hamlin Wore the Most Jaw-Dropping Red Gown ... - AOL

   www.aol.com/lifestyle/amelia-gray-hamlin-wore...

   Amelia Gray Hamlin stepped out for the 2023 Fashion Awards at the Royal Albert Hall in London last night, wearing a jaw-dropping red gown from Self Portrait with completely bare sides.