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Phyllite is a foliated metamorphic rock. It's cleavage resembles that of slate. It is often distinguished from slate because it has shiny metallic luster. Phyllite also has very fine grains.

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Which physical characteristic best describes the rock phyllite?

Foliate textire with microscopic mic a crystal


How is phyllite formed?

Phyllite is formed from the metamorphism of shale or mudstone. During this process, the minerals in the original rock recrystallize and align in a parallel structure, giving phyllite its characteristic foliated texture. The increased heat and pressure cause the minerals to reorganize, forming a fine-grained texture with a silky sheen.


Is phyllite foliated or unfoliated?

Phyllite is foliated.


What is Phyllite used for?

Phyllite is a metamorphic rock that is often used as a decorative stone in landscaping and construction. Its attractive appearance and durability make it a popular choice for countertops, flooring, and wall cladding. Additionally, phyllite can also be crushed and used as an aggregate in concrete production.


What is the origin of phyllite?

Phyllite is a type of metamorphic rock that comes from adding heat, pressure, and/or chemically active fluids to slate. Slate is the parent, or originial, type of rock from which the phyllite forms. It could also be said that slate recrystallizes into phyllite. Slate is also a metamorphic rock that starts out as the sedimentary rock called shale. Therefore, phyllite comes from slate, which comes from shale. Phyllite is different from slate because it has been metamorphosed more. As a result, the straight lines/planes (called foliation) that slate breaks along, are absent in phyllite, which is distinctly wavy in appearance. If more metamorphism is applied to phyllite, it recrystallizes into schist.