chiastolite


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chiastolite

[kī′as·tə‚līt]
(mineralogy)
A variety of andalusite whose crystals have a cross-shaped appearance in cross section due to the arrangement of carbonaceous impurities. Also known as macle.
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Chiastolite, a mineral with dark deposits of carbon or clay in the shape of a cross, can be found in the rocks of Massachusetts and in Mr.
There are veins of chiastolite that run from Lunenburg to Worcester," said Mr.