What type of rock does phyllite texture describe?

2020-04-01

What type of rock does phyllite texture describe?

Phyllite (/ˈfɪlaɪt/ FIL-yte) is a type of foliated metamorphic rock created from slate that is further metamorphosed so that very fine grained white mica achieves a preferred orientation. It is primarily composed of quartz, sericite mica, and chlorite.

Is phyllite hard or soft?

Phyllite is a durable and soft rock. Other uses may include cemetery markers, commemorative tablets, creative artwork, and writing slates. It is scaled between 1-2 on the Mohs Hardness scale and has a specific gravity or 2.72 – 2.73. Phyllite has a resistance to heat, pressure, and water.

What does phyllite rock look like?

Phyllite is usually gray, black, or greenish in color and often weathers to a tan or brown. Its reflective sheen often gives it a silvery, nonmetallic appearance. Phyllite is a very common metamorphic rock, found in many parts of the world.

How do you distinguish phyllite from slate?

Slate tends to break into flat sheets. Phyllite is similar to slate, but has typically been heated to a higher temperature; the micas have grown larger and are visible as a sheen on the surface. Where slate is typically planar, phyllite can form in wavy layers.

What temp does phyllite form?

7.2 Classification of Metamorphic Rocks

Very Low Grade Low Grade
Approximate Temperature Ranges
Parent Rock 150-300°C 300-450°C
Mudrock slate phyllite
Granite no change no change

What rocks can phyllite turn into?

Thus, they form phyllite rocks. Of course, further metamorphism and sedimentation process turn Phyllite into Schist, and then Geiss by enlarging mica flakes.

How do you distinguish phyllite from slate quizlet?

How might you distinguish slate and phyllite. Phyllite has a glossy sheen and a wavy surface. Slate does not.

What is the texture of phyllite?

Similar to slate, phyllite has a typical texture known as phyllitic sheen and has the feasibility or tendency to split into sheets like slate rocks. The phyllite rock forms when Slate rock further transformation occurs, and very coarse grain mica attains perfect orientation.

How is phyllite rock formed?

The Phyllite rock is formed by the slate that is further metamorphosed so that the coarse-grained mica attain a preferred accommodation. The word Phyllite is derived from the Greek phyllon meaning “ leaf”. Phyllite metamorphic rock has an excellent tendency to split into the sheets and is generally black to grey or light greenish-grey.

What is phyllite metamorphism?

The word Phyllite is derived from the Greek phyllon meaning “ leaf”. Phyllite metamorphic rock has an excellent tendency to split into the sheets and is generally black to grey or light greenish-grey.

What is phyllite used for?

Phyllite is a durable and soft rock. Other uses may include cemetery markers, commemorative tablets, creative artwork, and writing slates. It is scaled between 1-2 on the Mohs Hardness scale and has a specific gravity or 2.72 – 2.73.