Home
Compare Rocks


Websterite and Jasperoid


Jasperoid and Websterite


Definition

Definition
Websterite is ultramafic and ultrabasic rock that consists of roughly equal proportions of orthopyroxene and clinopyroxene. It is a special type of pyroxenite.   
Jasperoid is a rare, peculiar type of metasomatic alteration of rocks   

History
  
  

Origin
Webster, North Carolina   
USA   

Discoverer
Unknown   
Unknown   

Etymology
From the town of Webster located in North Carolina   
From silica, the main mineral content of Jasperoid   

Class
Igneous Rocks   
Sedimentary Rocks   

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

Family
  
  

Group
Plutonic   
Not Applicable   

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

Texture

Texture
Clastic, Granular, Phaneritic, Porphyritic   
Earthy   

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

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
Yes   

Wind Resistant
Yes   
No   

Acid Resistant
Yes   
No   

Appearance
Layered, Banded, Veined and Shiny   
Glassy or Pearly   

Uses

Architecture
  
  

Interior Uses
Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Interior Decoration   
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration   

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate   
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics, Serves as an Oil and Gas Reservoir rock   

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

Antiquity Uses
Artifacts   
Artifacts, Jewellery, Monuments, Sculpture   

Other Uses
  
  

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

Types

Types
Not Available   
Not Available   

Features
Generally rough to touch, Is one of the oldest rock   
Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Not Yet Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Not Used   
Used   

Petroglyphs
Not Used   
Used   

Figurines
Not Yet Used   
Used   

Fossils
Absent   
Present   

Formation

Formation
Websterite can be formed as cumulates in ultramafic intrusions by accumulation of pyroxene crystals at the base of the lava chamber.   
Jasperoid is a rare and peculiar type of metasomatic alteration of rocks. It is formed by extreme alteration of wall rocks within a shear zone which may occur in sediments, andesites, trachytes and basalts.   

Composition
  
  

Mineral Content
Amphibole, Augite, Bronzite, Chromite, Diopside, Enstatite, Garnet, Hornblende, Hypersthene, Magnetite, Pyroxene   
Clay Minerals, Pyrite, Quartz, Sulfides   

Compound Content
Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide   
NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO   

Transformation
  
  

Metamorphism
Yes   
Yes   

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

Weathering
Yes   
No   

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering   
Not Applicable   

Erosion
Yes   
No   

Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Water Erosion, Wind Erosion   
Not Applicable   

Properties

Physical Properties
  
  

Hardness
7   
3.5-4   

Grain Size
Coarse Grained   
Medium to Fine Coarse Grained   

Fracture
Uneven   
Conchoidal   

Streak
White, Greenish White or Grey   
White   

Porosity
Less Porous   
Less Porous   

Luster
Dull to Vitreous to Submetallic   
Vitreous and Pearly   

Compressive Strength
Not Available   
140.00 N/mm2   
15

Cleavage
Irregular   
Perfect   

Toughness
Not Available   
1   

Specific Gravity
3.2-3.5   
2.8-3   

Transparency
Opaque   
Transparent to Translucent   

Density
3.1-3.6 g/cm3   
2.8-2.9 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.92 kJ/Kg K   
10

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

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Russia   
China, India   

Africa
South Africa   
Morocco, Namibia   

Europe
Germany, Greece, Italy, Scotland, Turkey   
Austria, Italy, Romania, Spain, Switzerland   

Others
Greenland   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, USA   
Mexico, USA   

South America
Brazil, Colombia, Venezuela   
Brazil, Colombia   

Deposits in Oceania Continent
  
  

Australia
New Zealand, Queensland   
New South Wales, Queensland, Yorke Peninsula   

Summary >>
<< Reserves

All about Websterite and Jasperoid Properties

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

Compare Igneous Rocks

Igneous Rocks

Igneous Rocks

» More Igneous Rocks

Compare Igneous Rocks

» More Compare Igneous Rocks