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Adakite and Aplite


Aplite and Adakite


Definition

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   
Aplite is a fine-grained granite composed mainly of feldspar and quartz   

History
  
  

Origin
Adak, Aleutian Islands   
Iran   

Discoverer
Defant and Drummond   
Unknown   

Etymology
From Adak, Aleutian Islands   
From German Aplit, from Greek haploos simple + -ite   

Class
Igneous Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Medium Hardness Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Volcanic   
Plutonic   

Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock   
Fine Grained Rock, Opaque Rock   

Texture

Texture
Porphyritic   
Granular, Graphic   

Color
Black, Brown, Light to Dark Grey   
Black, Grey, Orange, Pink, White   

Maintenance
Less   
More   

Durability
Durable   
Durable   

Water Resistant
No   
Yes   

Scratch Resistant
No   
Yes   

Stain Resistant
No   
Yes   

Wind Resistant
Yes   
Yes   

Acid Resistant
Yes   
Yes   

Appearance
Dull and Soft   
Veined or Pebbled   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens   
Bathrooms, Countertops, Decorative Aggregates, Entryways, Floor Tiles, Homes, Hotels, Kitchens, Stair Treads   

Exterior Uses
As Building Stone, As Facing Stone, Office Buildings   
As Building Stone, As Facing Stone, Bridges, Paving Stone, Near Swimming Pools, Office Buildings, Resorts   

Other Architectural Uses
Whetstones   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone   
As Dimension Stone   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Monuments, Sculpture, Small Figurines   
Artifacts, Monuments, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Commemorative Tablets, Pottery, Used in aquariums   
Curling, Gemstone, Laboratory bench tops, Small Sculptures, Tombstones   

Types

Types
Not Available   
Not Available   

Features
Has High structural resistance against erosion and climate, Host rock for Diamond, Very fine grained rock   
Available in lots of colors, Available in Lots of Colors and Patterns, Is one of the oldest rock   

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   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Used   
Used   

Fossils
Absent   
Absent   

Formation

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.   
Aplites belong to intrusive igneous rocks which are mostly quart and alkali feldspar and are formed from residual eutectic granitic liquids and represent the final crystallization products of magma.   

Composition
  
  

Mineral Content
Olivine, Plagioclase, Pyroxene   
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz   

Compound Content
Aluminium Oxide, MgO, Silicon Dioxide   
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide   

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism   
Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Regional Metamorphism   

Weathering
Yes   
Yes   

Types of Weathering
Chemical Weathering, Mechanical Weathering   
Chemical Weathering, Mechanical Weathering   

Erosion
Yes   
Yes   

Types of Erosion
Coastal Erosion, Sea Erosion, Water Erosion   
Chemical Erosion, Coastal Erosion, Wind Erosion   

Properties

Physical Properties
  
  

Hardness
3-4   
6.5   

Grain Size
Fine to Medium Grained   
Very fine-grained   

Fracture
Conchoidal   
Not Available   

Streak
Bluish Black   
White   

Porosity
Less Porous   
Less Porous   

Luster
Grainy, Pearly and Vitreous   
Dull to Pearly to Subvitreous   

Compressive Strength
Not Available   
130.00 N/mm2   
16

Cleavage
Not Available   
Not Available   

Toughness
Not Available   
Not Available   

Specific Gravity
Not Available   
2.6   

Transparency
Opaque   
Opaque   

Density
Not Available   
2.6 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.79 kJ/Kg K   
16

Resistance
Heat Resistant, Pressure Resistant, Wear Resistant   
Heat Resistant, Wear Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Russia   
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam   

Africa
Ethiopia, Somalia, South Africa   
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa   

Europe
Iceland   
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, USA   
Canada, USA   

South America
Brazil   
Not Yet Found   

Deposits in Oceania Continent
  
  

Australia
Not Yet Found   
Not Yet Found   

Summary >>
<< Reserves

All about Adakite and Aplite Properties

Know all about Adakite and Aplite properties here. All properties of rocks are important as they define the type of rock and its application. Adakite and Aplite belong to Igneous Rocks.Texture of Adakite is Porphyritic whereas that of Aplite is Granular, Graphic. Adakite appears Dull and Soft and Aplite appears Veined or Pebbled. The luster of Adakite is grainy, pearly and vitreous while that of Aplite is dull to pearly to subvitreous. Adakite is available in black, brown, light to dark grey colors whereas Aplite is available in black, grey, orange, pink, white colors. The commercial uses of Adakite are commemorative tablets, pottery, used in aquariums and that of Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones.

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