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Hornfels vs Basaltic Trachyandesite


Basaltic Trachyandesite vs Hornfels


Definition

Definition
Hornfels is a metamorphic rock formed by the contact between mudstone or other clay rich rock, and a hot igneous body, and represents a heat altered equivalent of the original rock  
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  

History
  
  

Origin
New Zealand  
-  

Discoverer
Unknown  
Unknown  

Etymology
From German which means hornstone  
From its mineral and compound content and its relation with Basalt and Andesite rock  

Class
Metamorphic Rocks  
Igneous Rocks  

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

Family
  
  

Group
-  
Volcanic  

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

Texture

Texture
Granular, Platy  
Glassy, Massive, Porphyritic, Scoriaceous, Vesicular  

Color
Brown, Dark Greenish - Grey, Green, Reddish Brown  
Black, Brown, Light to Dark Grey  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
No  

Scratch Resistant
No  
Yes  

Stain Resistant
No  
Yes  

Wind Resistant
No  
No  

Acid Resistant
No  
Yes  

Appearance
Dull  
Dull and Soft  

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing  
Curbing, Whetstones  

Industry
  
  

Construction Industry
for Road Aggregate, Roadstone  
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Monuments  
Artifacts, Monuments  

Other Uses
  
  

Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork  
An Oil and Gas Reservoir, Commemorative Tablets, Creating Artwork  

Types

Types
Biotite hornfels  
Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite  

Features
Smooth to touch  
Has High structural resistance against erosion and climate, Very fine grained rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Hornfels is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.  
Basaltic Trachandesite is a fine-grained, hard rock that forms when bits of lava shoot out of volcanoes.  

Composition
  
  

Mineral Content
Andalusite  
Olivine, Plagioclase, Pyroxene  

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

Transformation
  
  

Metamorphism
No  
Yes  

Types of Metamorphism
-  
Contact Metamorphism  

Weathering
Yes  
Yes  

Types of Weathering
Biological Weathering  
Biological Weathering  

Erosion
Yes  
No  

Types of Erosion
Chemical Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion  
-  

Properties

Physical Properties
  
  

Hardness
2-3  
6  

Grain Size
Fine Grained  
Fine Grained  

Fracture
Conchoidal  
Conchoidal  

Streak
-  
White to Grey  

Porosity
Highly Porous  
Less Porous  

Luster
Shiny  
-  

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

Cleavage
Perfect  
-  

Toughness
-  
2.3  

Specific Gravity
3.4-3.9  
2.8-3  

Transparency
Opaque  
Opaque  

Density
0.25-0.30 g/cm3  
2.9-3.1 g/cm3  

Thermal Properties
  
  

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

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand  
India, Russia  

Africa
Cameroon, East Africa, Tanzania, Western Africa  
South Africa  

Europe
United Kingdom  
Iceland  

Others
-  
-  

Deposits in Western Continents
  
  

North America
Canada, USA  
Canada, USA  

South America
Bolivia, Brazil, Colombia, Ecuador  
Brazil  

Deposits in Oceania Continent
  
  

Australia
New South Wales, New Zealand, Queensland, Western Australia  
-  

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Hornfels vs Basaltic Trachyandesite 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 Hornfels and Basaltic Trachyandesite Reserves. Hornfels is a metamorphic rock formed by the contact between mudstone or other clay rich rock, and a hot igneous body, and represents a heat altered equivalent of the original rock. 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. 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 Hornfels vs Basaltic Trachyandesite information and Hornfels vs Basaltic Trachyandesite characteristics in the upcoming sections.

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Hornfels vs Basaltic Trachyandesite 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. Hornfels vs Basaltic Trachyandesite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Hornfels and Properties of Basaltic Trachyandesite. Learn more about Hornfels vs Basaltic Trachyandesite in the next section. The interior uses of Hornfels include Decorative aggregates, Flooring, Homes and Interior decoration whereas the interior uses of Basaltic Trachyandesite include Floor tiles, Homes, Hotels and Kitchens. Due to some exceptional properties of Hornfels and Basaltic Trachyandesite, they have various applications in construction industry. The uses of Hornfels in construction industry include For road aggregate, Roadstone and that of Basaltic Trachyandesite include As dimension stone, Cobblestones, Rail track ballast, Roadstone.

More about Hornfels and Basaltic Trachyandesite

Here you can know more about Hornfels and Basaltic Trachyandesite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Hornfels and Basaltic Trachyandesite consists of mineral content and compound content. The mineral content of Hornfels includes Andalusite and mineral content of Basaltic Trachyandesite includes Olivine, Plagioclase, Pyroxene. You can also check out the list of all Metamorphic Rocks. When we have to compare Hornfels vs Basaltic Trachyandesite, the texture, color and appearance plays an important role in determining the type of rock. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas, Basaltic Trachyandesite is available in black, brown, light to dark grey colors. Appearance of Hornfels is Dull and that of Basaltic Trachyandesite is Dull and Soft. Properties of rock is another aspect for Hornfels vs Basaltic Trachyandesite. The hardness of Hornfels is 2-3 and that of Basaltic Trachyandesite is 6. The types of Hornfels are Biotite hornfels whereas types of Basaltic Trachyandesite are Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Hornfels is while that of Basaltic Trachyandesite is white to grey. The specific heat capacity of Hornfels is 0.84 kJ/Kg K and that of Basaltic Trachyandesite is 0.84 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Hornfels is heat resistant, impact resistant, pressure resistant whereas Basaltic Trachyandesite is heat resistant, pressure resistant, wear resistant.

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