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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Found in modern day Turkey, these primitive mirrors were made out of a polished volcanic glass called obsidian.
在现代的土耳其发现,这些原始的镜子是由一种叫做黑曜石的抛光火山玻制成的。
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。
The villagers harvested wheat, raised animals and used simple tools made of bone and volcanic glass.
民们收割小麦,饲养动物,并使用由骨头和火山玻制成的简单工具。
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