1 Definition
1.1 Definition
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
Pantellerite is a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite
1.2 History
1.2.1 Origin
Adak, Aleutian Islands
Strait of sicily
1.2.2 Discoverer
Defant and Drummond
Unknown
1.3 Etymology
From Adak, Aleutian Islands
From Pantelleria, a volcanic island in the Strait of Sicily
1.4 Class
Igneous Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
1.5 Family
1.5.1 Group
1.6 Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
2 Texture
2.1 Texture
2.2 Color
Black, Brown, Light to Dark Grey
Dark Greenish - Grey
2.3 Maintenance
2.4 Durability
2.4.1 Water Resistant
2.4.2 Scratch Resistant
2.4.3 Stain Resistant
2.4.4 Wind Resistant
2.4.5 Acid Resistant
2.5 Appearance
Dull and Soft
Layered and Foliated
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens
Not Yet Used
3.1.2 Exterior Uses
As Building Stone, As Facing Stone, Office Buildings
Not Yet Used
3.1.3 Other Architectural Uses
3.2 Industry
3.2.1 Construction Industry
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone
NA
3.2.2 Medical Industry
Not Yet Used
Not Yet Used
3.3 Antiquity Uses
Monuments, Sculpture, Small Figurines
Artifacts, Sculpture
3.4 Other Uses
3.4.1 Commercial Uses
Commemorative Tablets, Pottery, Used in aquariums
Creating Artwork
4 Types
4.1 Types
Not Available
Pantelleritic Ignimbrite
4.2 Features
Has High structural resistance against erosion and climate, Host rock for Diamond, Very fine grained rock
High Fe content
4.3 Archaeological Significance
4.3.1 Monuments
4.3.2 Famous Monuments
Data Not Available
Not Applicable
4.3.3 Sculpture
4.3.4 Famous Sculptures
Data Not Available
Not Applicable
4.3.5 Pictographs
4.3.6 Petroglyphs
4.3.7 Figurines
4.4 Fossils
5 Formation
5.1 Formation
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.
Pantellerite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.
5.2 Composition
5.2.1 Mineral Content
Olivine, Plagioclase, Pyroxene
Amphibole, Feldspar, Ilmenite
5.2.2 Compound Content
Aluminium Oxide, MgO, Silicon Dioxide
Al, Fe
5.3 Transformation
5.3.1 Metamorphism
5.3.2 Types of Metamorphism
Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism
Burial Metamorphism, Cataclastic Metamorphism
5.3.3 Weathering
5.3.4 Types of Weathering
Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering
5.3.5 Erosion
5.3.6 Types of Erosion
Coastal Erosion, Sea Erosion, Water Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
6.1.2 Grain Size
Fine to Medium Grained
Fine Grained
6.1.3 Fracture
Conchoidal
Sub-conchoidal
6.1.4 Streak
6.1.5 Porosity
6.1.6 Luster
Grainy, Pearly and Vitreous
Earthy
6.1.7 Compressive Strength
6.1.8 Cleavage
6.1.9 Toughness
6.1.10 Specific Gravity
Not AvailableNot Available
0
8.4
6.1.11 Transparency
Opaque
Translucent to Opaque
6.1.12 Density
Not AvailableNot Available
0
1400
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
6.2.2 Resistance
Heat Resistant, Pressure Resistant, Wear Resistant
Heat Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
India, Russia
China, India
7.1.2 Africa
Ethiopia, Somalia, South Africa
Angola, Egypt, Madagascar, Namibia, Nigeria
7.1.3 Europe
Iceland
Germany, Iceland, Ireland, Italy, Spain, United Kingdom
7.1.4 Others
Not Yet Found
Not Yet Found
7.2 Deposits in Western Continents
7.2.1 North America
7.2.2 South America
Brazil
Argentina, Bolivia, Brazil, Colombia, Ecuador
7.3 Deposits in Oceania Continent
7.3.1 Australia
Not Yet Found
Central Australia, Queensland, Western Australia