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Definition

Definition
Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components

History

Origin
Southern Alps, France

Discoverer
Jakob Sederholm

Etymology
From the Greek word migma which means a mixture

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

Color
Black, Bluish - Grey, Brown, Brown- Black, Dark Greenish - Grey, Dark Grey to Black

Maintenance
More

Durability
Durable

Water Resistant
Yes

Scratch Resistant
Yes

Stain Resistant
No

Wind Resistant
No

Acid Resistant
No

Appearance
Dull, Banded and Foilated

Uses

Architecture

Interior Uses
Countertops, Flooring, Kitchens

Exterior Uses
As Building Stone, As Facing Stone

Other Architectural Uses
Curbing

Industry

Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement

Medical Industry
-

Antiquity Uses
Artifacts

Other Uses

Commercial Uses
Cemetery Markers, Jewelry, Tombstones, Used to manufracture paperweights and bookends

Types

Types
Diatexites and Metatexites

Features
Generally rough to touch, Is one of the oldest rock

Archaeological Significance

Monuments
-

Famous Monuments
-

Sculpture
-

Famous Sculptures
-

Pictographs
-

Petroglyphs
-

Figurines
-

Fossils
Absent

Formation

Formation
Migmatites form by high temperature regional and thermal metamorphism of protolith rocks where rocks melt partially due to high temperature.

Composition

Mineral Content
Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon

Compound Content
Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

Transformation

Metamorphism
Yes

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism

Weathering
Yes

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion
Yes

Types of Erosion
Chemical Erosion, Glacier Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness
5.5-6.5

Grain Size
Medium to Fine Coarse Grained

Fracture
Irregular

Streak
White

Porosity
Very Less Porous

Luster
Dull to Pearly to Subvitreous

Compressive Strength
120.00 N/mm2 26

Cleavage
-

Toughness
1.2

Specific Gravity
2.65-2.75

Transparency
Opaque

Density
-9999 g/cm3

Thermal Properties

Specific Heat Capacity
0.79 kJ/Kg K 17

Resistance
Heat Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia
China, India, Iran, Iraq, Kazakhstan, Kyrgyzstan, Mongolia, Russia

Africa
Cameroon, Ethiopia, Ghana, Kenya, Madagascar, Morocco, Mozambique, Namibia, Nigeria, Tanzania, Togo

Europe
Albania, Austria, Bosnia and Herzegovina, Finland, France, Georgia, Germany, Hungary, Italy, Kosovo, Monaco, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, Sweden, Switzerland, Ukraine, United Kingdom

Others
-

Deposits in Western Continents

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

South America
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru, Venezuela

Deposits in Oceania Continent

Australia
New South Wales, New Zealand, Queensland, Victoria

Summary >>
<< Reserves

Metamorphic Rocks

Learn more about Properties of Migmatite

What is Migmatite? In this section, we will learn more about properties of Migmatite i.e. physical and thermal properties. Physical properties of Migmatite include Color, Streak, Hardness, Structure, Cleavage, Fracture, Luster, Specific Gravity etc. The strength of Migmatite is 120.00 N/mm2. Streak of Migmatite is white while its cleavage is . Luster of Migmatite is dull to pearly to subvitreous and its fracture is irregular. Migmatite is opaque in nature. Know all about Migmatite, What is Migmatite, its composition, features, facts and reserves in next sections.

Know about Composition of Migmatite

What is Migmatite composed of? Get to know about composition of Migmatite here. Migmatite definition gives information about the Formation of Migmatite and its composition.The composition of Migmatite can be further divided into mineral and compound content. The mineral content of Migmatite rock includes Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon and The compound content of Migmatite rock includes Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide. Almost all rocks undergo transformation process. Know all about Migmatite rock in next section.

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