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Greenschist Rock



Definition

Definition
Greenschist is a metamorphic rock that is formed under lowest temperatures and pressures and is usually produced by regional metamorphism

History

Origin
-

Discoverer
Unknown

Etymology
From minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpentine which are green in color

Class
Metamorphic Rocks

Sub-Class
Durable Rock, Medium Hardness Rock

Family

Group
-

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

Texture

Texture
Foliated, Platy

Color
Dark Greenish - Grey, Green

Maintenance
Less

Durability
Durable

Water Resistant
Yes

Scratch Resistant
Yes

Stain Resistant
No

Wind Resistant
No

Acid Resistant
No

Appearance
Layered and Shiny

Uses

Architecture

Interior Uses
Bathrooms, Countertops, Decorative Aggregates, Entryways, Homes, Interior Decoration

Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings

Other Architectural Uses
Curbing

Industry

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

Medical Industry
-

Antiquity Uses
Artifacts

Other Uses

Commercial Uses
Blackboards, Manufacture of tools, Writing Slates

Types

Types
Metamorphic rock

Features
Easily splits into thin plates, Smooth to touch

Archaeological Significance

Monuments
-

Famous Monuments
-

Sculpture
-

Famous Sculptures
-

Pictographs
-

Petroglyphs
-

Figurines
-

Fossils
Absent

Formation

Formation
Greenschist is medium grade metamorphic rock, formed by the metamorphosis of mudstone or shale, or some types of igneous rock, when it is subjected to higher temperatures and pressures.

Composition

Mineral Content
Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Serpentine, Sillimanite, Staurolite, Talc

Compound Content
CaO, Carbon Dioxide, MgO

Transformation

Metamorphism
No

Types of Metamorphism
-

Weathering
Yes

Types of Weathering
Biological Weathering, Chemical Weathering

Erosion
Yes

Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion

Properties

Physical Properties

Hardness
3.5-4

Grain Size
Medium to Fine Coarse Grained

Fracture
Conchoidal

Streak
White

Porosity
Highly Porous

Luster
Shiny

Compressive Strength
160.00 N/mm2 21

Cleavage
Slaty

Toughness
1.5

Specific Gravity
2.5-2.9

Transparency
Opaque

Density
2.8-2.9 g/cm3

Thermal Properties

Specific Heat Capacity
0.84 kJ/Kg K 15

Resistance
Impact Resistant, Pressure Resistant, Water Resistant

Reserves

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
-

Deposits in Western Continents

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

South America
Brazil, Colombia, Guyana

Deposits in Oceania Continent

Australia
New South Wales, New Zealand, Queensland

Definition >>
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Metamorphic Rocks

Information about Greenschist

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 Greenschist Uses. We have provided you with all information about Greenschist rock here. Greenschist is a metamorphic rock that is formed under lowest temperatures and pressures and is usually produced by regional metamorphism. Greenschist is available in dark greenish - grey, green colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Greenschist is white. Get to know more about Greenschist rock and characteristics of Greenschist rock in the next sections.

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