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Granulite vs Websterite


Websterite vs Granulite


Definition

Definition
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.  
Websterite is ultramafic and ultrabasic rock that consists of roughly equal proportions of orthopyroxene and clinopyroxene. It is a special type of pyroxenite.  

History
  
  

Origin
Central Europe  
Webster, North Carolina  

Discoverer
Unknown  
Unknown  

Etymology
From Latin granulum, a little grain or fine grained  
From the town of Webster located in North Carolina  

Class
Metamorphic Rocks  
Igneous Rocks  

Sub-Class
Durable Rock, Hard Rock  
Durable Rock, Hard Rock  

Family
  
  

Group
-  
Plutonic  

Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock  
Coarse Grained Rock, Opaque Rock  

Texture

Texture
Granoblastic  
Clastic, Granular, Phaneritic, Porphyritic  

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

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
Yes  
Yes  

Wind Resistant
No  
Yes  

Acid Resistant
No  
Yes  

Appearance
Veined or Pebbled  
Layered, Banded, Veined and Shiny  

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
As Dimension Stone, Building houses or walls  
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Monuments, Sculpture  
Artifacts  

Other Uses
  
  

Commercial Uses
Curling, Gemstone, Laboratory bench tops, Soil Conditioner, Tombstones  
Cemetery Markers, Commemorative Tablets, Creating Artwork, Laboratory bench tops, Jewelry, Sea Defence, Tombstones  

Types

Types
Metamorphic rock  
Ultramafic rock  

Features
Clasts are smooth to touch  
Generally rough to touch, Is one of the oldest rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Granulite is a fine-grained granular metamorphic rock in which the main component minerals are feldspars and quartz and forms at high temperature and pressure conditions.  
Websterite can be formed as cumulates in ultramafic intrusions by accumulation of pyroxene crystals at the base of the lava chamber.  

Composition
  
  

Mineral Content
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Quartz  
Amphibole, Augite, Bronzite, Chromite, Diopside, Enstatite, Garnet, Hornblende, Hypersthene, Magnetite, Pyroxene  

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

Transformation
  
  

Metamorphism
No  
Yes  

Types of Metamorphism
-  
Burial Metamorphism, Impact Metamorphism  

Weathering
Yes  
Yes  

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

Erosion
Yes  
Yes  

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

Properties

Physical Properties
  
  

Hardness
6-7  
7  

Grain Size
Medium to Coarse Grained  
Coarse Grained  

Fracture
-  
Uneven  

Streak
White  
White, Greenish White or Grey  

Porosity
Very Less Porous  
Less Porous  

Luster
Vitreous  
Dull to Vitreous to Submetallic  

Compressive Strength
175.00 N/mm2  
20
95.00 N/mm2  
30

Cleavage
-  
-  

Toughness
-  
-  

Specific Gravity
2.8-3.0  
3.2-3.5  

Transparency
Opaque  
Opaque  

Density
3.06-3.33 g/cm3  
3.1-3.6 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.14 kJ/Kg K  
33
0.79 kJ/Kg K  
17

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

Reserves

Deposits in Eastern Continents
  
  

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

Africa
Angola, Egypt, Madagascar, Nigeria, South Africa  
South Africa  

Europe
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic  
Germany, Greece, Italy, Scotland, Turkey  

Others
-  
Greenland  

Deposits in Western Continents
  
  

North America
Canada, USA  
Canada, USA  

South America
-  
Brazil, Colombia, Venezuela  

Deposits in Oceania Continent
  
  

Australia
-  
New Zealand, Queensland  

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Granulite vs Websterite 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 Granulite and Websterite Reserves. Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.. Websterite is ultramafic and ultrabasic rock that consists of roughly equal proportions of orthopyroxene and clinopyroxene. It is a special type of pyroxenite.. 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 Granulite vs Websterite information and Granulite vs Websterite characteristics in the upcoming sections.

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Granulite vs Websterite 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. Granulite vs Websterite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Granulite and Properties of Websterite. Learn more about Granulite vs Websterite in the next section. The interior uses of Granulite include Bathrooms, Countertops, Decorative aggregates, Entryways, Flooring, Homes, Hotels, Interior decoration, Kitchens and Stair treads whereas the interior uses of Websterite include Countertops, Decorative aggregates, Entryways, Floor tiles, Flooring and Interior decoration. Due to some exceptional properties of Granulite and Websterite, they have various applications in construction industry. The uses of Granulite in construction industry include As dimension stone, Building houses or walls and that of Websterite include As dimension stone, Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate.

More about Granulite and Websterite

Here you can know more about Granulite and Websterite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Granulite and Websterite consists of mineral content and compound content. The mineral content of Granulite includes Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Quartz and mineral content of Websterite includes Amphibole, Augite, Bronzite, Chromite, Diopside, Enstatite, Garnet, Hornblende, Hypersthene, Magnetite, Pyroxene. You can also check out the list of all Metamorphic Rocks. When we have to compare Granulite vs Websterite, the texture, color and appearance plays an important role in determining the type of rock. Granulite is available in black, brown colors whereas, Websterite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey colors. Appearance of Granulite is Veined or Pebbled and that of Websterite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Granulite vs Websterite. The hardness of Granulite is 6-7 and that of Websterite is 7. The types of Granulite are Metamorphic rock whereas types of Websterite are Ultramafic rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Granulite is white while that of Websterite is white, greenish white or grey. The specific heat capacity of Granulite is 0.14 kJ/Kg K and that of Websterite is 0.79 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Granulite is heat resistant, wear resistant whereas Websterite is impact resistant, pressure resistant, wear resistant.

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