Several centuries underwater have rendered the Alderney crystal opaque, but Dr Ropars and his team are now examining it, and believe it may be Iceland SPAR.
在海底经历了数百年之后，这些奥尔德尼晶体变成不透明物了，但是Ropars博士和他的团队正在对这些晶体进行测试，并坚信它们也许就是冰洲石。
We can be conveniently studied with reference to a crystal of calcite or Iceland SPAR.
我们可以很方便地以方解石或冰洲石晶体来进行研究。
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