異なる鉱物の特性を探求し、それらがどのように岩石や鉱石に組み合わさるのかを学びます。モース硬度の10種類の鉱物を知り、自然の不思議さと美しさを感じましょう。
3 建材的石膏-硬度2（附图版）
E5 • 3 mins • May 22, 2022
Charts
- 16Decreased by 1
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- 25Increased by 1
- 39Decreased by 2
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