Perlite, obsidian and pitchstone are volcanic glass having the same compositions commonly with rhyolite as well as andesite and basalt.
珍珠、和松脂等玻质熔以酸性,基性者也常见。
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Also, in terms of ancient stone tools, they're gonna use things like obsidian, it's volcanic glass.
此外,就古代石器而言,他们会使用黑曜石,这是火山玻璃。
Found in modern day Turkey, these primitive mirrors were made out of a polished volcanic glass called obsidian.
在现代耳其发现,这些原子是由一种叫做黑曜石抛光火山玻璃制成。
The villagers harvested wheat, raised animals and used simple tools made of bone and volcanic glass.
村民们收割小麦,饲养动物,并使用由骨头和火山玻璃制成简单工具。
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