Chiastolite - definition of chiastolite by The Free Dictionary
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A mineral variety of andalusite with carbonaceous impurities regularly arranged along the longer axis of the crystal.
[From Greek khīastos, crossed, past participle of khīazein, to mark with an X; see chiasma.]
(Minerals) a variety of andalusite containing carbon impurities. Also called: macle
[C19: from German Chiastolith, from Greek khiastos crossed, marked with a chi + lithos stone]
References in periodicals archive
The Northern Karakoram Terrane comprises sedimentary units such as Pasu limestones, Pasu slates, chiastolite
slates and precollision K2 orthogneiss and granites.
CROSS STONES SPEAKER MARY ANNE MACLEOD: on Sunday, Nov.
The exact shape of the sectors, like those in the chiastolite
variety of andalusite, varies from crystal to crystal, and along the length of a single crystal.