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Schist Rock

Rocks with Medium Hardness

Marble
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Limestone
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Basalt
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Schist Definition

Definition
Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation

History of Schist

Origin
Unknown
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Discoverer
Unknown

Etymology
From French schiste, Greek skhistos i.e. split

Class
Metamorphic Rocks
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Sub-Class
Durable Rock, Medium Hardness Rock
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Schist Family

Group
Not Applicable

Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Schist Texture

Texture
Foliated, Platy
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Schist Color
Black, Blue, Brown, Dark Brown, Green, Grey, Silver

Maintenance
Less
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Durability
Durable

Water Resistant
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Scratch Resistant
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Stain Resistant
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Wind Resistant
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Acid Resistant
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Appearance
Layered and Shiny
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Schist Uses

Architecture

Interior Uses
Decorative Aggregates, Floor Tiles, Interior Decoration
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Exterior Uses
Garden Decoration, Paving Stone
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Other Architectural Uses
Not Yet Used

Industry

Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, for Road Aggregate, Roadstone

Medical Industry
Not Yet Used

Antiquity Uses
Artifacts
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Other Uses

Commercial Uses
Used in aquariums, Writing Slates
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Schist Types

Types
Mica Schists, Calc-Silicate Schists, Graphite Schists, Blueschists, Whiteschists, Greenschists, Hornblende Schist, Talc Schist, Chlorite Schist, Garnet Schist, Glaucophane schist.

Features
Easily splits into thin plates, Smooth to touch
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Archaeological Significance of Schist

Monuments
Not Yet Used

Famous Monuments
Not Applicable

Sculpture
Not Yet Used

Famous Sculptures
Not Applicable

Pictographs
Used

Petroglyphs
Used

Figurines
Not Yet Used

Fossils
Absent

Formation of Schist

Formation
Schist formed by dynamic metamorphism at high temperatures and pressures that aligns the grains of mica, hornblende and other elongated minerals into thin layers.

Composition

Mineral Content
Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc
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Compound Content
CaO, Carbon Dioxide, MgO
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Transformation

Metamorphism

Types of Metamorphism
Not Applicable

Weathering

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties of Schist

Physical Properties of Schist

Hardness
3.5-4

Grain Size
Medium to Fine Coarse Grained
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Fracture
Conchoidal
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Streak
White
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Porosity
Highly Porous
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Luster
Shiny
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Compressive Strength
Not Available
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Cleavage
Slaty
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Toughness
1.5

Specific Gravity
2.5-2.9

Transparency
Opaque
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Density
2.8-2.9 g/cm3

Thermal Properties of Schist

Specific Heat Capacity
Not Available
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Resistance
Impact Resistant, Pressure Resistant, Water Resistant
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Schist Reserves

Schist Deposits in Eastern Continents

Asia
Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam

Africa
Egypt, Ethiopia, Morocco, Nigeria, South Africa

Europe
Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland

Others
Not Yet Found

Schist Deposits in Western Continents

North America
Canada, Costa Rica, Cuba, Mexico, Panama, USA

South America
Brazil, Colombia, Guyana

Schist Deposits in Oceania Continent

Australia
New South Wales, New Zealand, Queensland

Information about Schist

Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Schist Uses. We have provided you with all information about Schist rock here. Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation. Schist is available in black, blue, brown, dark brown, green, grey, silver colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Schist is white. Get to know more about Schist rock and characteristics of Schist rock in the next sections.

Characteristics of Schist

Many rocks have distinct characteristics. Some of the Properties of Schist are hardness, structure, streak, fracture etc. Schist is significant as it is composed of minerals and has variety of uses in our day to day life. The characteristics of Schist plays an important role in its identification. The hardness of Schist is 3.5-4 on Moh’s hardness scale. Rocks according to their hardness are divided into:Hard Rocks, Soft Rocks and Rocks with Medium Hardness. Fracture of Schist rock is conchoidal. Its specific heat capacity is Not Available. Schist is impact resistant, pressure resistant, water resistant. Some of its uses are:

  • Interior Uses: Decorative aggregates, Floor tiles and Interior decoration.
  • Construction Industry: As dimension stone, Building houses or walls, Cement manufacture, For road aggregate, Roadstone.

Know more about Schist rock in the next section.

More About Schist

Schist is a type of Metamorphic Rocks. The color of rock is one of its important property. Schist rock is available in black, blue, brown, dark brown, green, grey, silver colors. It is Layered and Shiny in appearance. The Schist mineral content includes Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc. Its compound content includes CaO, Carbon Dioxide, MgO. Let’s move on to the types of Schist. The types of Schist include Mica Schists, Calc-Silicate Schists, Graphite Schists, Blueschists, Whiteschists, Greenschists, Hornblende Schist, Talc Schist, Chlorite Schist, Garnet Schist, Glaucophane schist.. Fossils are the remains of prehistoric plants or animals which are embedded in rock and preserved in petrified form. Fossils are found only in sedimentary rocks. As Schist belongs to Metamorphic Rocks, fossils are not found in it.