1 Definition
1.1 Definition
Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components
1.2 History
1.2.1 Origin
Southern Alps, France
1.2.2 Discoverer
Jakob Sederholm
1.3 Etymology
From the Greek word migma which means a mixture
1.4 Class
Metamorphic Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Not Applicable
1.6 Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
2 Texture
2.1 Texture
Foliated
2.2 Color
Black, Bluish - Grey, Brown, Brown- Black, Dark Greenish - Grey, Dark Grey to Black
2.3 Maintenance
More
2.4 Durability
Durable
2.4.1 Water Resistant
✔
✘
81% - Metamorphic Rocks Rocks have it !
▶
2.4.2 Scratch Resistant
✔
✘
65% - Metamorphic Rocks Rocks have it !
▶
2.4.3 Stain Resistant
✔
✘
42% - Metamorphic Rocks Rocks have it !
▶
2.4.4 Wind Resistant
✔
✘
19% - Metamorphic Rocks Rocks have it !
▶
2.4.5 Acid Resistant
✔
✘
15% - Metamorphic Rocks Rocks have it !
▶
2.5 Appearance
Dull, Banded and Foilated
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Countertops, Flooring, Kitchens
3.1.2 Exterior Uses
As Building Stone, As Facing Stone
3.1.3 Other Architectural Uses
Curbing
3.2 Industry
3.2.1 Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement
3.2.2 Medical Industry
Not Yet Used
3.3 Antiquity Uses
Artifacts
3.4 Other Uses
3.4.1 Commercial Uses
Cemetery Markers, Jewelry, Tombstones, Used to manufracture paperweights and bookends
4 Types
4.1 Types
Diatexites and Metatexites
4.2 Features
Generally rough to touch, Is one of the oldest rock
4.3 Archaeological Significance
4.3.1 Monuments
Not Yet Used
4.3.2 Famous Monuments
Not Applicable
4.3.3 Sculpture
Not Yet Used
4.3.4 Famous Sculptures
Not Applicable
4.3.5 Pictographs
Used
4.3.6 Petroglyphs
Used
4.3.7 Figurines
Not Yet Used
4.4 Fossils
Absent
5 Formation
5.1 Formation
Migmatites form by high temperature regional and thermal metamorphism of protolith rocks where rocks melt partially due to high temperature.
5.2 Composition
5.2.1 Mineral Content
Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon
5.2.2 Compound Content
Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
5.3 Transformation
5.3.1 Metamorphism
✔
✘
50% - Metamorphic Rocks Rocks have it !
▶
5.3.2 Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism
5.3.3 Weathering
✔
✘
65% - Metamorphic Rocks Rocks have it !
▶
5.3.4 Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
5.3.5 Erosion
✔
✘
77% - Metamorphic Rocks Rocks have it !
▶
5.3.6 Types of Erosion
Chemical Erosion, Glacier Erosion, Water Erosion, Wind Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
6.1.2 Grain Size
Medium to Fine Coarse Grained
6.1.3 Fracture
Irregular
6.1.4 Streak
White
6.1.5 Porosity
Very Less Porous
6.1.6 Luster
Dull to Pearly to Subvitreous
6.1.7 Compressive Strength
Not Available
Rank: N/A (Overall) ▶
0.15
450
6.1.8 Cleavage
Poor
6.1.9 Toughness
1.2
6.1.10 Specific Gravity
6.1.11 Transparency
Opaque
6.1.12 Density
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
Not Available
Rank: N/A (Overall) ▶
0.14
3.2
6.2.2 Resistance
Heat Resistant, Pressure Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
China, India, Iran, Iraq, Kazakhstan, Kyrgyzstan, Mongolia, Russia
7.1.2 Africa
Cameroon, Ethiopia, Ghana, Kenya, Madagascar, Morocco, Mozambique, Namibia, Nigeria, Tanzania, Togo
7.1.3 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
7.1.4 Others
Not Yet Found
7.2 Deposits in Western Continents
7.2.1 North America
Canada, Costa Rica, Cuba, Mexico, Panama, USA
7.2.2 South America
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru, Venezuela
7.3 Deposits in Oceania Continent
7.3.1 Australia
New South Wales, New Zealand, Queensland, Victoria