Hornfels, Contact Metamophism, Grenville, Quebec Hornfels is the group name for a set of contact metamorphic rocks that have been baked and hardened b

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Hornfels, Contact Metamophism, Grenville, Quebec Hornfels is the group name for a set of contact metamorphic rocks that have been baked and hardened by the heat of intrusive igneous masses.

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Photo credit: © Phil Degginger / Alamy / Afripics
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Keywords: contact, fine-grained, fracture, grenville, hornfels, metamophism, metamorphic, mineral, quebec, rock, semi-conchoidal, specimen