pipedreams Posted February 4, 2023 Share Posted February 4, 2023 2 1 Link to comment Share on other sites More sharing options...
pipedreams Posted February 4, 2023 Share Posted February 4, 2023 1 2 Link to comment Share on other sites More sharing options...
Schmidt Meister Posted February 4, 2023 Share Posted February 4, 2023 Star Hollandite Quartz aka Urchin Quartz - Very Rare - Quartz Crystal With Mannardite Inclusions - Brazil Star Hollandite Quartz is a type of quartz crystal that has very small inclusions of Hollandite in it, that look like tiny black stars. Hollandite is an oxide mineral. A monoclinic-prismatic white mineral containing aluminum, barium, iron, lead, manganese, oxygen, silicon, and sodium. It is the barium-manganese (III) endmember of the coronadite group. Quartz is a hard, crystalline mineral composed of silicon and oxygen atoms. The atoms are linked in a continuous framework of SiO₄ silicon-oxygen tetrahedra, with each oxygen being shared between two tetrahedra, giving an overall chemical formula of SiO₂. Quartz belongs to the trigonal crystal system. The ideal crystal shape is a six-sided prism terminating with six-sided pyramids at each end. Common colored varieties include citrine, rose quartz, amethyst, smoky quartz, milky quartz, and others. These color differentiations arise from the presence of impurities which change the molecular orbitals, causing some electronic transitions to take place in the visible spectrum causing colors. Hollandite Quartz is a variety of Quartz, silicon dioxide, which has dark grey/black six-pointed “star” inclusions of the mineral Hollandite. Star Hollandite formations are formed when deposits of Hollandite become trapped within Quartz during its formation. As the Hollandite becomes subjected to high thermal temperatures within the Earth, the Hollandite bursts into star formations within the Quartz. This variety of quartz is very rare. 5 Link to comment Share on other sites More sharing options...
Schmidt Meister Posted February 4, 2023 Share Posted February 4, 2023 1 5 Link to comment Share on other sites More sharing options...
minderasr Posted February 4, 2023 Share Posted February 4, 2023 10 hours ago, ChuteTheMall said: Made of pure 100% Grade A vegan? 2 Link to comment Share on other sites More sharing options...
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Silentpoet Posted February 4, 2023 Share Posted February 4, 2023 2 1 Link to comment Share on other sites More sharing options...
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railfancwb Posted February 4, 2023 Share Posted February 4, 2023 Reading one of the ads, it occurred to me that “honest” needs no enhancement modifiers. How is “very honest” better than “honest”? And no one will say “almost” or “usually” or “somewhat” honest. In the same way something is “unique” with enhancement modifiers not needed. “Almost unique” doesn’t have the baggage of “almost honest” thought. 2 Link to comment Share on other sites More sharing options...
Silentpoet Posted February 4, 2023 Share Posted February 4, 2023 1 1 4 Link to comment Share on other sites More sharing options...
Schmidt Meister Posted February 5, 2023 Share Posted February 5, 2023 3 Link to comment Share on other sites More sharing options...
Batesmotel Posted February 5, 2023 Share Posted February 5, 2023 18 hours ago, Schmidt Meister said: Cicadas my ass. The running gunfights in South Memphis did more to keep me awake. 1 1 2 Link to comment Share on other sites More sharing options...
ChuteTheMall Posted February 5, 2023 Share Posted February 5, 2023 2 Link to comment Share on other sites More sharing options...
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pipedreams Posted February 5, 2023 Share Posted February 5, 2023 1 1 Link to comment Share on other sites More sharing options...
pipedreams Posted February 5, 2023 Share Posted February 5, 2023 1 Link to comment Share on other sites More sharing options...
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pipedreams Posted February 5, 2023 Share Posted February 5, 2023 1 1 Link to comment Share on other sites More sharing options...
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