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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

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Metamorphic Rocks

Information about Migmatite

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 Migmatite Uses. We have provided you with all information about Migmatite rock here. Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components. Migmatite is available in black, bluish - grey, brown, brown- black, dark greenish - grey, dark grey to black colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Migmatite is white. Get to know more about Migmatite rock and characteristics of Migmatite rock in the next sections.

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