Mylonite and Suevite
Definition
Definition
Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism
During the impact melted material forming a breccia containing glass and crystal or lithic fragments together form Suevite rock.
History
Origin
New Zealand
Canada, Germany
Discoverer
Unknown
Unknown
Etymology
From Greek mulōn mill + -ite
No etymologies found
Class
Metamorphic Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
Not Applicable
Not Applicable
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock
Texture
Texture
Foliated
Earthy
Color
Black to Grey
Black, Brown, Colourless, Green, Grey, Pink
Maintenance
Less
Less
Durability
Durable
Durable
Water Resistant
Yes
Yes
Scratch Resistant
Yes
Yes
Stain Resistant
No
No
Wind Resistant
No
No
Acid Resistant
No
No
Appearance
Dull, Banded and Foilated
Banded
Uses
Architecture
Interior Uses
Decorative Aggregates, Interior Decoration
Decorative Aggregates, Homes, Interior Decoration
Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings
Other Architectural Uses
Curbing
Curbing
Industry
Construction Industry
for Road Aggregate, Landscaping, Roadstone
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories
Medical Industry
Not Yet Used
Not Applicable
Antiquity Uses
Artifacts, Monuments
Artifacts, Monuments, Sculpture
Other Uses
Commercial Uses
Creating Artwork, Gemstone, Jewelry
As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Source of Magnesia (MgO)
Types
Types
Blastomylonites, Ultramylonites and Phyllonites
Phyllosilicates, Calcite
Features
Surfaces are often shiny
Host Rock for Lead
Archaeological Significance
Monuments
Used
Used
Famous Monuments
Data Not Available
Data Not Available
Sculpture
Used
Used
Famous Sculptures
Data Not Available
Data Not Available
Pictographs
Used
Used
Petroglyphs
Used
Used
Figurines
Used
Used
Fossils
Absent
Absent
Formation
Formation
Mylonites are ductilely deformed rocks formed by the accumulation of large shear strain, in ductile fault zones.
Suevite is a metamorphic rock consisting partly of melted material, typically forming a breccia containing glass and crystal or lithic fragments, formed during an impact event.
Composition
Mineral Content
Porphyroblasts
Coesite, Quartz, Stishovite
Compound Content
Aluminium Oxide, Calcium Sulfate, Chromium(III) Oxide, Iron(III) Oxide, Magnesium Carbonate, Silicon Dioxide
CaO, Carbon Dioxide, MgO
Transformation
Metamorphism
No
Yes
Types of Metamorphism
Not Applicable
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
Weathering
Yes
No
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Not Applicable
Erosion
Yes
No
Types of Erosion
Chemical Erosion, Sea Erosion, Wind Erosion
Not Applicable
Properties
Physical Properties
Hardness
3-4
5.5
Grain Size
Fine Grained
Coarse Grained
Fracture
Conchoidal
Uneven
Streak
White
Light to dark brown
Porosity
Highly Porous
Less Porous
Luster
Shiny
Earthy
Compressive Strength
1.28 N/mm2
32
Not Available
Cleavage
Conchoidal
Irregular
Toughness
Not Available
Not Available
Specific Gravity
2.97-3.05
2.86
Transparency
Opaque
Opaque
Density
2.6-4.8 g/cm3
2.8-2.9 g/cm3
Thermal Properties
Specific Heat Capacity
1.50 kJ/Kg K
3
0.92 kJ/Kg K
10
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant
Heat Resistant
Reserves
Deposits in Eastern Continents
Asia
China, India, Indonesia, Saudi Arabia, South Korea
Not Yet Found
Africa
Eritrea, Ethiopia, Ghana, South Africa, Western Africa
Not Yet Found
Europe
England, Finland, France, Germany, Great Britain, Greece, United Kingdom
England, France, Germany, Great Britain, Netherlands, Sweden, Switzerland, United Kingdom
Others
Not Yet Found
Not Yet Found
Deposits in Western Continents
North America
USA
Not Yet Found
South America
Not Yet Found
Not Yet Found
Deposits in Oceania Continent
Australia
Central Australia, Western Australia
Not Yet Found
All about Mylonite and Suevite Properties
Know all about Mylonite and Suevite properties here. All properties of rocks are important as they define the type of rock and its application. Mylonite and Suevite belong to Metamorphic Rocks.Texture of Mylonite is Foliated whereas that of Suevite is Earthy. Mylonite appears Dull, Banded and Foilated and Suevite appears Banded. The luster of Mylonite is shiny while that of Suevite is earthy. Mylonite is available in black to grey colors whereas Suevite is available in black, brown, colourless, green, grey, pink colors. The commercial uses of Mylonite are creating artwork, gemstone, jewelry and that of Suevite are as a feed additive for livestock, gemstone, metallurgical flux, source of magnesia (mgo).
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