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Mr. Wigmore Tech Lab on X: "The hardness of rocks in #Minecraft is not the same as reality?!? #mohshardnessscale Obsidian was the big surprise! https://t.co/5E2X3BdNZn" / X
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Moh's Scale - [Oxygen Not Included] - General Discussion - Klei Entertainment Forums
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CONFIDENTIAL. Obsidian Igneous A natural volcanic glass formed in quick-cooling lava. Sharp edged but smooth on surface. Colours: black, purple blue. - ppt download
![PDF] The Obsidian Evidence for the Scale of Social Life during the Palaeolithic | Semantic Scholar](https://d3i71xaburhd42.cloudfront.net/481c2ace563ae2e688627ca2fca0697c4344d002/36-Figure2.1-1.png "PDF] The Obsidian Evidence for the Scale of Social Life during the Palaeolithic | Semantic Scholar")
PDF] The Obsidian Evidence for the Scale of Social Life during the Palaeolithic | Semantic Scholar
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The Mohs Hardness Scale | Geology In
