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Mugearite and Greywacke


Greywacke and Mugearite


Definition

Definition
Mugearite is a type of oligoclase bearing basalt, also comprising of olivine, apatite, and opaque oxides   
Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay   

History
  
  

Origin
Skye, Scotland   
Unknown   

Discoverer
Alfred Harker   
Unknown   

Etymology
From mugear +‎ -ite   
From German Grauwacke, from grau grey + wacke   

Class
Igneous Rocks   
Sedimentary Rocks   

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

Family
  
  

Group
Volcanic   
Not Applicable   

Other Categories
Opaque Rock   
Fine Grained Rock, Opaque Rock   

Texture

Texture
Glassy, Massive, Porphyritic, Scoriaceous, Vesicular   
Clastic   

Color
Black, Brown, Light to Dark Grey   
Beige, Black, Brown, Colourless, Cream, Dark Brown, Green, Grey, Light Green, Light to Dark Grey, Pink, Red, White, Yellow   

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   
No   

Appearance
Dull and Soft   
Dull   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing   
Curbing, Whetstones   

Industry
  
  

Construction Industry
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone   
Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments, Sculpture   
Artifacts, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Creating Artwork   
As armour rock for sea walls, Petroleum reservoirs, Sea Defence, Tombstones   

Types

Types
Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite   
Not Available   

Features
Has High structural resistance against erosion and climate, Very fine grained rock   
Available in Lots of Colors and Patterns, Generally rough to touch, Non-vesicular, Veined   

Archaeological Significance
  
  

Monuments
Used   
Not Yet Used   

Famous Monuments
Data Not Available   
Not Applicable   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Used   
Used   

Fossils
Absent   
Present   

Formation

Formation
Mugearite forms when lava reaches the Earth's surface near an active volcano. The temperature of lava is between 1100 to 1250° C when it gets to the surface.   
Graywacke rock is a type of sedimentary rock, which is also known as immature sandstone, which is indurated, dark grey and consisting of poorly sorted angular to sub-angular, sand-sized grains.   

Composition
  
  

Mineral Content
Olivine, Plagioclase, Pyroxene   
Augite, Biotite, Calcite, Chlorite, Clay, Clay Minerals, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz   

Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide   
Aluminium Oxide, NaCl, CaO, Chromium(III) Oxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide   

Transformation
  
  

Metamorphism
Yes   
No   

Types of Metamorphism
Burial Metamorphism, Impact Metamorphism   
Not Applicable   

Weathering
Yes   
Yes   

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

Erosion
No   
Yes   

Types of Erosion
Not Applicable   
Coastal Erosion, Sea Erosion, Wind Erosion   

Properties

Physical Properties
  
  

Hardness
6   
6-7   

Grain Size
Not Applicable   
Angular and Fine   

Fracture
Conchoidal   
Conchoidal   

Streak
White to Grey   
White   

Porosity
Less Porous   
Highly Porous   

Luster
Not Available   
Dull   

Compressive Strength
37.50 N/mm2   
27
Not Available   

Cleavage
Not Applicable   
Perfect   

Toughness
2.3   
2.6   

Specific Gravity
2.8-3   
2.2-2.8   

Transparency
Opaque   
Opaque   

Density
2.9-3.1 g/cm3   
2.6-2.61 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.84 kJ/Kg K   
15
Not Available   

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

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Russia   
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan   

Africa
South Africa   
Namibia, Nigeria, South Africa   

Europe
Iceland   
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom   

Others
Not Yet Found   
Greenland   

Deposits in Western Continents
  
  

North America
Canada, USA   
Canada, USA   

South America
Brazil   
Brazil   

Deposits in Oceania Continent
  
  

Australia
Not Yet Found   
New South Wales, New Zealand   

Summary >>
<< Reserves

All about Mugearite and Greywacke Properties

Know all about Mugearite and Greywacke properties here. All properties of rocks are important as they define the type of rock and its application. Mugearite belongs to Igneous Rocks while Greywacke belongs to Sedimentary Rocks.Texture of Mugearite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Greywacke is Clastic. Mugearite appears Dull and Soft and Greywacke appears Dull. The luster of Mugearite is not available while that of Greywacke is dull. Mugearite is available in black, brown, light to dark grey colors whereas Greywacke is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Mugearite are creating artwork and that of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones.

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