Article
Article
Chloritoid
Article By:
Labotka, Theodore C. Department of Earth and Planetary Sciences, University of Tennessee, Knoxville, Tennessee.
Last reviewed:March 2021
DOI:https://doi.org/10.1036/1097-8542.131700
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- Chloritoid, published October 2019:Download PDF
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A hydrous iron aluminum silicate mineral commonly found in low-grade metamorphic rocks such as slate and phyllite. Chloritoid is found as platy, black or dark green crystals, rarely more than a few millimeters in size (Fig. 1). Its density ranges from 3.46 to 3.80 g/cm3 and its hardness on the Mohs scale is 6.5.
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