单词 | hornfels |
释义 | hornfels (once / 5909656 pages) n WORD FAMILY hornfels USAGE EXAMPLESThey are excessively variable in their mineralogical composition, and very often alternate in thin seams with biotite hornfels and indurated quartzites. Various, Encyclopaedia Britannica, 11th Edit...(2012) "As a result, we have keys made out of Hornfels clinker," says Mitchell. The Guardian(Aug 18, 2010) From diabases, basalts, andesites and other igneous rocks a third type of hornfels is produced. Various, Encyclopaedia Britannica, 11th Edit...(2012) n a fine-grained metamorphic rock formed by the action of heat on clay rocks Syn|Hyper hornstone metamorphic rock rock altered by pressure and heat |
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