The iron oxides in rock crystals are specularite, hematite and lepidocrocite.
晶中铁氧为镜铁矿、赤铁矿、纤铁矿。
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These rock crystals are made from a mineral called gypsum and they are over a meter long.
这些岩石晶体由种叫做石膏的矿物构，。
And then those are an ancestor of Liezenstein and reading stones, which I think were often made of something like rock crystal.
然后这些是利森斯坦和读石的祖先，我认为它们通常是由类似岩石水晶的材料制的。
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划词翻译
详细解释
中铁氧
为镜铁矿、赤铁矿、纤铁矿。
种叫做石膏的矿物构
，
。
的。
