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Mohs hardness scale for Dummies

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Titanium Was uncovered in 1791 by English clergyman William Gregor (1761�?817). Gregor wasn't a specialist scientist, but examined minerals as a hobby. On one event, he attempted a chemical Evaluation with the mineral ilmenite and found a portion that he was unable to classify as among the present elements. He https://busbarbending59269.dm-blog.com/35820159/nbn-powder-packaging-can-be-fun-for-anyone
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