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Soapstone
Soapstone

Pegmatite
Pegmatite



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Soapstone vs Pegmatite

Definition

Definition

It is a metamorphic magnesium rich rock because it is composed of the mineral talc
Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals

History

Origin

USA
-

Discoverer

Unknown
R. J. Hauy

Etymology

From 17th century, because of its greasy feel and use like a soap
From Greek pegma, pegmat which means- thing joined together + -ite

Class

Metamorphic Rocks
Igneous Rocks

Sub-Class

Durable Rock, Soft Rock
Durable Rock, Hard Rock

Family

Group

-
Plutonic

Other Categories

Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock

Texture

Texture

Polished
Pegmatitic

Color

Black, Black to Grey, Green, Grey
Black, Brown, Cream, Green, Grey, Pink, Red, Rust, Silver, White, Yellow

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull, Banded and Foilated
Layered, Banded, Veined and Shiny

Uses

Architecture

Interior Uses

Bathrooms, Decorative Aggregates, Homes, Interior Decoration
Decorative Aggregates, Flooring, Interior Decoration

Exterior Uses

As Facing Stone, Garden Decoration
As Building Stone, As Facing Stone, Paving Stone

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

Manufacture of Magnesium and Dolomite Refractories
As Dimension Stone, Building houses or walls, Construction Aggregate, for Road Aggregate, Landscaping

Medical Industry

Taken as a Supplement for Calcium or Magnesium
-

Antiquity Uses

Artifacts, Jewellery, Monuments, Sculpture
Artifacts, Sculpture, Small Figurines

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)
Creating Artwork, Jewelry, Source of corundum, tourmalines, beryls and topaz

Types

Types

Metamorphic rock
Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite

Features

Host Rock for Lead
Generally rough to touch, Is one of the oldest rock, Source of corundum, tourmalines, beryls and topaz

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.
Pegmatite rock is holocrystalline, intrusive igneous rock which is formed by partial melting and dewatering during the process of metamorphism.

Composition

Mineral Content

Albite, Apatite, Biotite, Calcite, Carbonate, Clay Minerals, Hornblende, Ilmenite, Micas, Plagioclase, Pyroxene, Quartz
Apatite, Beryl, Feldspar, Fluorite, Garnet, Lepidolite, Quartz, Silica, Spodumene, Topaz

Compound Content

CaO, Mg, MgO
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, Phosphorus Pentoxide

Transformation

Metamorphism

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

Types of Weathering

-
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

-
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

17
1 7
👆🏻

Grain Size

Fine Grained
Medium to Coarse Grained

Fracture

Conchoidal
Conchoidal

Streak

Black
White

Porosity

Less Porous
Less Porous

Luster

Greasy
Grainy, Pearly and Vitreous

Compressive Strength

225.00 N/mm2178.54 N/mm2
0.15 450
👆🏻

Cleavage

Perfect
Perfect

Toughness

1
2.1

Specific Gravity

2.862.6-2.63
0 8.4
👆🏻

Transparency

Opaque
Translucent to Opaque

Density

2.8-2.9 g/cm32.6-2.65 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.88 kJ/Kg K0.79 kJ/Kg K
0.14 3.2
👆🏻

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
China, India, Iran, Japan, Nepal, North Korea, Russia, Saudi Arabia, South Korea

Africa

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

Europe

Austria, England, Finland, France, Germany, Greece, Spain, Sweden, Switzerland, United Kingdom
Austria, France, Greece, Ireland, Italy, Netherlands, Slovakia, Spain, Turkey, Ukraine

Others

-
-

Deposits in Western Continents

North America

Canada, USA
Canada

South America

Colombia
Brazil

Deposits in Oceania Continent

Australia

Central Australia, New Zealand, Queensland
New South Wales, Queensland, South Australia, Western Australia

Soapstone vs Pegmatite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Soapstone and Pegmatite Reserves. It is a metamorphic magnesium rich rock because it is composed of the mineral talc. Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Soapstone vs Pegmatite information and Soapstone vs Pegmatite characteristics in the upcoming sections.

Soapstone vs Pegmatite Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Soapstone vs Pegmatite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Soapstone and Properties of Pegmatite. Learn more about Soapstone vs Pegmatite in the next section. The interior uses of Soapstone include Bathrooms, Decorative aggregates, Homes and Interior decoration whereas the interior uses of Pegmatite include Decorative aggregates, Flooring and Interior decoration. Due to some exceptional properties of Soapstone and Pegmatite, they have various applications in construction industry. The uses of Soapstone in construction industry include Manufacture of magnesium and dolomite refractories and that of Pegmatite include As dimension stone, Building houses or walls, Construction aggregate, For road aggregate, Landscaping.

More about Soapstone and Pegmatite

Here you can know more about Soapstone and Pegmatite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Soapstone and Pegmatite consists of mineral content and compound content. The mineral content of Soapstone includes Albite, Apatite, Biotite, Calcite, Carbonate, Clay Minerals, Hornblende, Ilmenite, Micas, Plagioclase, Pyroxene, Quartz and mineral content of Pegmatite includes Apatite, Beryl, Feldspar, Fluorite, Garnet, Lepidolite, Quartz, Silica, Spodumene, Topaz. You can also check out the list of all Metamorphic Rocks. When we have to compare Soapstone vs Pegmatite, the texture, color and appearance plays an important role in determining the type of rock. Soapstone is available in black, black to grey, green, grey colors whereas, Pegmatite is available in black, brown, cream, green, grey, pink, red, rust, silver, white, yellow colors. Appearance of Soapstone is Dull, Banded and Foilated and that of Pegmatite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Soapstone vs Pegmatite. The hardness of Soapstone is 1 and that of Pegmatite is 7. The types of Soapstone are Metamorphic rock whereas types of Pegmatite are Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Soapstone is black while that of Pegmatite is white. The specific heat capacity of Soapstone is 0.88 kJ/Kg K and that of Pegmatite is 0.79 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Soapstone is heat resistant, pressure resistant whereas Pegmatite is heat resistant, impact resistant, pressure resistant.