Cataclasite and Adakite
Definition
Definition
Cataclasite is a type of cataclastic rock that is formed by fracturing and comminution during faulting. It is normally cohesive and non-foliated, consisting of angular clasts in a finer-grained matrix
Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs
History
Origin
Swiss Alps, Europe
Adak, Aleutian Islands
Discoverer
Michael Tellinger
Defant and Drummond
Etymology
From the Italian word cataclasi
From Adak, Aleutian Islands
Class
Metamorphic Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
Family
Group
Not Applicable
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Texture
Texture
Clastic
Porphyritic
Color
Brown, Green, White, Yellow
Black, Brown, Light to Dark Grey
Maintenance
Less
Less
Durability
Durable
Durable
Water Resistant
Yes
No
Scratch Resistant
No
No
Stain Resistant
No
No
Wind Resistant
No
Yes
Acid Resistant
No
Yes
Appearance
Dull and Banded
Dull and Soft
Uses
Architecture
Interior Uses
Decorative Aggregates, Homes
Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens
Exterior Uses
As Building Stone, As Facing Stone, Paving Stone
As Building Stone, As Facing Stone, Office Buildings
Other Architectural Uses
Curbing
Whetstones
Industry
Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts
Monuments, Sculpture, Small Figurines
Other Uses
Commercial Uses
Commemorative Tablets, Creating Artwork
Commemorative Tablets, Pottery, Used in aquariums
Types
Types
Protocataclasite, Mesocataclasite, Ultracataclasite and Foliated cataclasite
Not Available
Features
Easily splits into thin plates, Is one of the oldest rock
Has High structural resistance against erosion and climate, Host rock for Diamond, Very fine grained rock
Archaeological Significance
Monuments
Not Yet Used
Used
Famous Monuments
Not Applicable
Data Not Available
Sculpture
Not Yet Used
Used
Famous Sculptures
Not Applicable
Data Not Available
Pictographs
Used
Used
Petroglyphs
Used
Used
Figurines
Not Yet Used
Used
Fossils
Absent
Absent
Formation
Formation
Cataclasiste rocks mainly form by pressure deep under the Earth's surface, from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.
Adakite rocks are formed when the hydrous fluids are released from minerals that break down in metamorphosed basalt, and rise into the mantle they initiate partial melting.
Composition
Mineral Content
Albite, Apatite, Augite, Biotite, Calcite, Enstatite, Epidote, Feldspar, Micas, Muscovite or Illite, Pyroxene, Quartz
Olivine, Plagioclase, Pyroxene
Compound Content
Silicon Dioxide
Aluminium Oxide, MgO, Silicon Dioxide
Transformation
Metamorphism
No
Yes
Types of Metamorphism
Not Applicable
Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism
Weathering
Yes
Yes
Types of Weathering
Mechanical Weathering
Chemical Weathering, Mechanical Weathering
Erosion
Yes
Yes
Types of Erosion
Coastal Erosion, Wind Erosion
Coastal Erosion, Sea Erosion, Water Erosion
Properties
Physical Properties
Hardness
3-4
3-4
Grain Size
Fine Grained
Fine to Medium Grained
Fracture
NA
Conchoidal
Streak
Black
Bluish Black
Porosity
Less Porous
Less Porous
Luster
Vitreous
Grainy, Pearly and Vitreous
Cleavage
Not Available
Not Available
Toughness
Not Available
Not Available
Specific Gravity
2.1
Not Available
Transparency
Translucent to Opaque
Opaque
Density
2.9-3.1 g/cm3
Not Available
Thermal Properties
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant
Heat Resistant, Pressure Resistant, Wear Resistant
Reserves
Deposits in Eastern Continents
Asia
China, India, Russia, Saudi Arabia, South Korea
India, Russia
Africa
Egypt, Ethiopia, Kenya, Madagascar, Morocco, South Africa
Ethiopia, Somalia, South Africa
Europe
England, Finland, France, Spain, United Kingdom
Iceland
Others
Not Yet Found
Not Yet Found
Deposits in Western Continents
North America
Canada, USA
Canada, USA
South America
Argentina, Colombia
Brazil
Deposits in Oceania Continent
Australia
Central Australia, Western Australia
Not Yet Found
All about Cataclasite and Adakite Properties
Know all about Cataclasite and Adakite properties here. All properties of rocks are important as they define the type of rock and its application. Cataclasite belongs to Metamorphic Rocks while Adakite belongs to Igneous Rocks.Texture of Cataclasite is Clastic whereas that of Adakite is Porphyritic. Cataclasite appears Dull and Banded and Adakite appears Dull and Soft. The luster of Cataclasite is vitreous while that of Adakite is grainy, pearly and vitreous. Cataclasite is available in brown, green, white, yellow colors whereas Adakite is available in black, brown, light to dark grey colors. The commercial uses of Cataclasite are commemorative tablets, creating artwork and that of Adakite are commemorative tablets, pottery, used in aquariums.
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