Anthracite coal isnot a foliatedmetamorphic rock. Foliated metamorphic rocks show clear bands of color or the crystals form to create layers that鈥?Is anthracite coal a metamorphic rock? The harder forms, such as anthracite coal, can be regarded as metamorphic rock because of later exposure to elevated temperature and pressure.
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What is a foliated metamorphic rock?
Foliated metamorphic rocks are metamorphic rocks that are banded or layered. This occurs due to heat and pressure given on a single plane of axis, one direction, where the re-crystallization of the minerals in the rock are elongated along that axis.
What is meant by the term 鈥渇oliation鈥?
Foliation occurs due to the force of heat and pressure given on a single plane of axis or in one direction. Re-crystallization of the minerals in the rock are elongated along that axis.
What are some non-foliated metamorphic rock types?
Some non-foliated metamorphic rock types include the popular marble, hornfels, quartzite, and amphibolite.