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Basaltic Trachyandesite vs Obsidian


Obsidian vs Basaltic Trachyandesite


Definition

Definition
Basaltic Trachyandesite is an extrusive igneous rock which is a type of Basalt rock and is formed by the rapid cooling of basaltic lava exposed at or very near the Earth's surface  
Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth  

History
  
  

Origin
-  
Ethiopia  

Discoverer
Unknown  
Obsius  

Etymology
From its mineral and compound content and its relation with Basalt and Andesite rock  
From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius  

Class
Igneous Rocks  
Igneous Rocks  

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

Family
  
  

Group
Volcanic  
Volcanic  

Other Categories
Fine Grained Rock, Opaque Rock  
Opaque Rock  

Texture

Texture
Glassy, Massive, Porphyritic, Scoriaceous, Vesicular  
Glassy  

Color
Black, Brown, Light to Dark Grey  
Black, Blue, Brown, Green, Orange, Red, Tan, Yellow  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
No  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
Yes  
No  

Wind Resistant
No  
No  

Acid Resistant
Yes  
No  

Appearance
Dull and Soft  
Shiny  

Uses

Architecture
  
  

Interior Uses
Floor Tiles, Homes, Hotels, Kitchens  
Decorative Aggregates, Interior Decoration  

Exterior Uses
As Building Stone, Paving Stone, Garden Decoration, Office Buildings  
Garden Decoration  

Other Architectural Uses
Curbing, Whetstones  
-  

Industry
  
  

Construction Industry
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone  
Arrowheads, Cutting Tool, Knives, Scrapers, Spear Points  

Medical Industry
-  
Surgery  

Antiquity Uses
Artifacts, Monuments  
Artifacts, Jewellery  

Other Uses
  
  

Commercial Uses
An Oil and Gas Reservoir, Commemorative Tablets, Creating Artwork  
Creating Artwork, Mirror, Used in aquariums  

Types

Types
Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite  
Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian  

Features
Has High structural resistance against erosion and climate, Very fine grained rock  
Blocks negativity, Helps to protect against depression  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Basaltic Trachandesite is a fine-grained, hard rock that forms when bits of lava shoot out of volcanoes.  
When the lava is released from volcano, it undergoes a very rapid cooling which freezes the mechanisms of crystallization. The result is a volcanic glass with a uniform smooth texture.  

Composition
  
  

Mineral Content
Olivine, Plagioclase, Pyroxene  
-  

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

Weathering
Yes  
Yes  

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

Erosion
No  
Yes  

Types of Erosion
-  
Chemical Erosion, Coastal Erosion, Glacier Erosion  

Properties

Physical Properties
  
  

Hardness
6  
5-5.5  

Grain Size
Fine Grained  
-  

Fracture
Conchoidal  
Conchoidal  

Streak
White to Grey  
White  

Porosity
Less Porous  
Very Less Porous  

Luster
-  
Vitreous  

Compressive Strength
37.50 N/mm2  
99+
0.15 N/mm2  
99+

Cleavage
-  
-  

Toughness
2.3  
-  

Specific Gravity
2.8-3  
2.6-2.7  

Transparency
Opaque  
Translucent  

Density
2.9-3.1 g/cm3  
2.6 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.84 kJ/Kg K  
15
0.92 kJ/Kg K  
10

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

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Russia  
Afghanistan, Indonesia, Japan, Russia  

Africa
South Africa  
Kenya  

Europe
Iceland  
Greece, Hungary, Iceland, Italy, Turkey  

Others
-  
-  

Deposits in Western Continents
  
  

North America
Canada, USA  
Canada, Mexico, USA  

South America
Brazil  
Argentina, Chile, Ecuador, Peru  

Deposits in Oceania Continent
  
  

Australia
-  
New Zealand  

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Basaltic Trachyandesite vs Obsidian Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Basaltic Trachyandesite and Obsidian Reserves. Basaltic Trachyandesite is an extrusive igneous rock which is a type of Basalt rock and is formed by the rapid cooling of basaltic lava exposed at or very near the Earth's surface. Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Basaltic Trachyandesite vs Obsidian information and Basaltic Trachyandesite vs Obsidian characteristics in the upcoming sections.

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Basaltic Trachyandesite vs Obsidian Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Basaltic Trachyandesite vs Obsidian characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Basaltic Trachyandesite and Properties of Obsidian. Learn more about Basaltic Trachyandesite vs Obsidian in the next section. The interior uses of Basaltic Trachyandesite include Floor tiles, Homes, Hotels and Kitchens whereas the interior uses of Obsidian include Decorative aggregates and Interior decoration. Due to some exceptional properties of Basaltic Trachyandesite and Obsidian, they have various applications in construction industry. The uses of Basaltic Trachyandesite in construction industry include As dimension stone, Cobblestones, Rail track ballast, Roadstone and that of Obsidian include Arrowheads, Cutting tool, Knives, Scrapers, Spear points.

More about Basaltic Trachyandesite and Obsidian

Here you can know more about Basaltic Trachyandesite and Obsidian. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Basaltic Trachyandesite and Obsidian consists of mineral content and compound content. The mineral content of Basaltic Trachyandesite includes Olivine, Plagioclase, Pyroxene and mineral content of Obsidian includes . You can also check out the list of all Igneous Rocks. When we have to compare Basaltic Trachyandesite vs Obsidian, the texture, color and appearance plays an important role in determining the type of rock. Basaltic Trachyandesite is available in black, brown, light to dark grey colors whereas, Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. Appearance of Basaltic Trachyandesite is Dull and Soft and that of Obsidian is Shiny. Properties of rock is another aspect for Basaltic Trachyandesite vs Obsidian. The hardness of Basaltic Trachyandesite is 6 and that of Obsidian is 5-5.5. The types of Basaltic Trachyandesite are Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite whereas types of Obsidian are Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Basaltic Trachyandesite is white to grey while that of Obsidian is white. The specific heat capacity of Basaltic Trachyandesite is 0.84 kJ/Kg K and that of Obsidian is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Basaltic Trachyandesite is heat resistant, pressure resistant, wear resistant whereas Obsidian is heat resistant, impact resistant.

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