Harder Than Granite! How Did the Ancient Egyptians Cut QUARTZITE With Such Precision? Quartzite is one of the hardest stones on Earth — sitting at 7–8 on the Mohs hardness scale. For comparison: the famous red granite of Aswan ranks only 6–7, and that is already extremely difficult to work with. Yet the quartzite boxes of Abydos show perfectly flat surfaces, razor-sharp inner corners, and a glass-like polish. How could an ancient culture shape a material that is almost pure silicon dioxide — as
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Sioux Quartzite - Alchetron, The Free Social Encyclopedia
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14K views · 324 reactions | 퐒퐡퐚퐝퐞퐬 퐨퐟 퐐퐮퐚퐫퐭퐳퐢퐭퐞: This reel shows various types of occurrences of quartzite. Some are massive, jointed, veins and metasedimentary. Their high resistance to weathering causes them to be preserved for very long geological ages. :© Arpit Sahu #quartzite #sandstone #quartz #rajasthan | Scintillating Beauty | Facebook
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