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pyrocrystalline

[ pahy-ruh-kris-tl-in, -ahyn, -een ]
/ ˌpaɪ rəˈkrɪs tl ɪn, -ˌaɪn, -ˌin /
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adjective Petrography.
crystallized from a molten magma or highly heated solution.
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Origin of pyrocrystalline

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022
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