cryptoperthite

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cryptoperthite

mineral

Learn about this topic in these articles:

alkali feldspar

In perthite
…distinguishable only microscopically, and in cryptoperthite the crystals are so small that the separation can be detected only by X-ray diffraction. Perthite was originally thought to be a single mineral, described at a locality near Perth, Ontario, from which its name is derived.
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