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Soapstone and Metapelite


Metapelite and Soapstone


Definition

Definition
It is a metamorphic magnesium rich rock because it is composed of the mineral talc  
Metapelite is an old and currently not widely used field geological term for a clay rich fine-grained clastic sediment or sedimentary rock, i.e. mud or a mudstone  

History
  
  

Origin
USA  
-  

Discoverer
Unknown  
Unknown  

Etymology
From 17th century, because of its greasy feel and use like a soap  
From Pelos or clay in Greek  

Class
Metamorphic Rocks  
Metamorphic Rocks  

Sub-Class
Durable Rock, Soft Rock  
Durable Rock, Medium Hardness Rock  

Family
  
  

Group
-  
-  

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

Texture

Texture
Polished  
Foliated  

Color
Black, Black to Grey, Green, Grey  
Dark Greenish - Grey, Green, Light Green, Light Greenish Grey  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
No  
Yes  

Stain Resistant
No  
Yes  

Wind Resistant
No  
No  

Acid Resistant
No  
No  

Appearance
Dull, Banded and Foilated  
Banded  

Uses

Architecture
  
  

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

Exterior Uses
As Facing Stone, Garden Decoration  
As Building Stone, As Facing Stone  

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
Manufacture of Magnesium and Dolomite Refractories  
Cement Manufacture, Construction Aggregate, for Road Aggregate  

Medical Industry
Taken as a Supplement for Calcium or Magnesium  
-  

Antiquity Uses
Artifacts, Jewellery, Monuments, Sculpture  
Artifacts  

Other Uses
  
  

Commercial Uses
Cemetery Markers, Creating Artwork, Gemstone, Jewelry, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Production of Lime, Source of Magnesia (MgO)  
Commemorative Tablets, Creating Artwork  

Types

Types
Metamorphic rock  
Metamorphic rock  

Features
Host Rock for Lead  
Easily splits into thin plates, It is One of the Oldest, Strongest and Hardest Rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
Christ the Redeemer in Rio de Janeiro, Stonehenge in English county of Wiltshire  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Soapstone is a talc-schist, which is a type of metamorphic rock and it is largely composed of the mineral talc and is thus rich inmagnesium.   
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Metapelite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.  

Composition
  
  

Mineral Content
Albite, Apatite, Biotite, Calcite, Carbonate, Clay Minerals, Hornblende, Ilmenite, Micas, Plagioclase, Pyroxene, Quartz  
Albite, Chlorite, Quartz  

Compound Content
CaO, Mg, MgO  
Aluminium Oxide, CaO, MgO  

Transformation
  
  

Metamorphism
Yes  
No  

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism  
-  

Weathering
No  
Yes  

Types of Weathering
-  
Biological Weathering, Chemical Weathering, Mechanical Weathering  

Erosion
No  
Yes  

Types of Erosion
-  
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion  

Properties

Physical Properties
  
  

Hardness
1  
5-6  

Grain Size
Fine Grained  
Medium to Fine Coarse Grained  

Fracture
Conchoidal  
Fibrous  

Streak
Black  
-  

Porosity
Less Porous  
Highly Porous  

Luster
Greasy  
Earthy  

Compressive Strength
225.00 N/mm2  
8
40.00 N/mm2  
40

Cleavage
Perfect  
-  

Toughness
1  
-  

Specific Gravity
2.86  
3.4-3.7  

Transparency
Opaque  
Opaque  

Density
2.8-2.9 g/cm3  
0-300 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.88 kJ/Kg K  
13
0.72 kJ/Kg K  
22

Resistance
Heat Resistant, Pressure Resistant  
Heat Resistant, Impact Resistant, Pressure Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Indonesia, Japan, North Korea, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Tajikistan, Thailand  
-  

Africa
Egypt, Ethiopia, Ghana, South Africa, Western Africa  
Western Africa  

Europe
Austria, England, Finland, France, Germany, Greece, Spain, Sweden, Switzerland, United Kingdom  
United Kingdom  

Others
-  
-  

Deposits in Western Continents
  
  

North America
Canada, USA  
-  

South America
Colombia  
Brazil, Colombia, Ecuador  

Deposits in Oceania Continent
  
  

Australia
Central Australia, New Zealand, Queensland  
Central Australia, Western Australia  

Summary >>
<< Reserves

All about Soapstone and Metapelite Properties

Know all about Soapstone and Metapelite properties here. All properties of rocks are important as they define the type of rock and its application. Soapstone and Metapelite belong to Metamorphic Rocks.Texture of Soapstone is Polished whereas that of Metapelite is Foliated. Soapstone appears Dull, Banded and Foilated and Metapelite appears Banded. The luster of Soapstone is greasy while that of Metapelite is earthy. Soapstone is available in black, black to grey, green, grey colors whereas Metapelite is available in dark greenish - grey, green, light green, light greenish grey colors. The commercial uses of Soapstone are cemetery markers, creating artwork, gemstone, jewelry, manufacture of soap, solvents, dyes, plastics and fibres, production of lime, source of magnesia (mgo) and that of Metapelite are commemorative tablets, creating artwork.

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