What is (a) Chiastolite; -- so called from the tessellated appearance of a cross section. See Chiastolite. (b) A crystal having a similar tessellated appearance. (c) A twin crystal called?

macle — (a) Chiastolite; -- so called from the tessellated appearance of a cross section. See Chiastolite. (b) A crystal having a similar tessellated appearance. (c) A twin crystal. (Webster's 1913.)

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