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Vogesite and Websterite


Websterite and Vogesite


Definition

Definition
Vogesite is a porphyritic alkaline igneous rock and is a variety of Lamprophyre which is dominated by essential amphibole, usually hornblende, and potassic feldspar   
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
Unknown   
Webster, North Carolina   

Discoverer
Unknown   
Unknown   

Etymology
From the variety of Lamprophyre Greek lampros bright and shining + porphureos purple   
From the town of Webster located in North Carolina   

Class
Igneous Rocks   
Igneous Rocks   

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

Family
  
  

Group
Plutonic   
Plutonic   

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

Texture

Texture
Porphyritic   
Clastic, Granular, Phaneritic, Porphyritic   

Color
Black, Bluish - Grey, Brown, Dark Greenish - Grey, Green, Grey   
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
No   
Yes   

Wind Resistant
No   
Yes   

Acid Resistant
Yes   
Yes   

Appearance
Dull, Banded and Foilated   
Layered, Banded, Veined and Shiny   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration   
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, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories   
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate   

Medical Industry
Taken as a Supplement for Calcium or Magnesium   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments, Sculpture   
Artifacts   

Other Uses
  
  

Commercial Uses
An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)   
Cemetery Markers, Commemorative Tablets, Creating Artwork, Laboratory bench tops, Jewelry, Sea Defence, Tombstones   

Types

Types
Minette, Alnoite, Camptonite, Monchiquite, Fourchite, Vogesite, Appinite and Spessartite   
Not Available   

Features
Always found as volcanic pipes over deep continental crust, Host rock for Diamond, Is one of the oldest rock, Surfaces are often shiny   
Generally rough to touch, Is one of the oldest rock   

Archaeological Significance
  
  

Monuments
Used   
Not Yet Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Used   
Not Yet Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Used   
Not Yet Used   

Fossils
Absent   
Absent   

Formation

Formation
Vogesite formation takes place deep beneath the Earth’s surface at around 150 to 450 kilometres, and are erupted rapidly and violently.   
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, Carbonate, Garnet, Micas, Olivine, Phlogopite, Pyroxene   
Amphibole, Augite, Bronzite, Chromite, Diopside, Enstatite, Garnet, Hornblende, Hypersthene, Magnetite, Pyroxene   

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

Transformation
  
  

Metamorphism
Yes   
Yes   

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

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
5-6   
7   

Grain Size
Fine to Coarse Grained   
Coarse Grained   

Fracture
Conchoidal   
Uneven   

Streak
White   
White, Greenish White or Grey   

Porosity
Very Less Porous   
Less Porous   

Luster
Subvitreous to Dull   
Dull to Vitreous to Submetallic   

Cleavage
Conchoidal   
Irregular   

Toughness
Not Available   
Not Available   

Specific Gravity
2.86-2.87   
3.2-3.5   

Transparency
Translucent to Opaque   
Opaque   

Density
2.95-2.96 g/cm3   
3.1-3.6 g/cm3   

Thermal Properties
  
  

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Russia   
India, Russia   

Africa
Angola, Botswana, Cameroon, Ethiopia, South Africa   
South Africa   

Europe
England, Hungary, Iceland, United Kingdom   
Germany, Greece, Italy, Scotland, Turkey   

Others
Antarctica, Greenland   
Greenland   

Deposits in Western Continents
  
  

North America
Canada, Mexico, USA   
Canada, USA   

South America
Argentina, Colombia, Ecuador   
Brazil, Colombia, Venezuela   

Deposits in Oceania Continent
  
  

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

Summary >>
<< Reserves

All about Vogesite and Websterite Properties

Know all about Vogesite and Websterite properties here. All properties of rocks are important as they define the type of rock and its application. Vogesite and Websterite belong to Igneous Rocks.Texture of Vogesite is Porphyritic whereas that of Websterite is Clastic, Granular, Phaneritic, Porphyritic. Vogesite appears Dull, Banded and Foilated and Websterite appears Layered, Banded, Veined and Shiny. The luster of Vogesite is subvitreous to dull while that of Websterite is dull to vitreous to submetallic. Vogesite is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors whereas Websterite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey colors. The commercial uses of Vogesite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo) and that of Websterite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.

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