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2005/08/24 | 方解石[Calcite]
类别(℃〖化学〗)
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发表于 20:23
The most common form of calcium carbonate: CaCO
3
. The mineral
aragonite
has the same chemical composition, but a different crystal structure.
Calcite has been known for its property of
birefringence
. A light beam entering a calcite crystal is split into two separate rays travelling at different speeds, so that an image viewed through a plate of calcite (which is cut along the proper axes) will appear as a double image.
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