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Greywacke vs Breccia


Breccia vs Greywacke


Definition

Definition
Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay  
Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material  

History
  
  

Origin
-  
England  

Discoverer
Unknown  
Unknown  

Etymology
From German Grauwacke, from grau grey + wacke  
From Italian, literally gravel, Germanic origin and related to break  

Class
Sedimentary Rocks  
Sedimentary Rocks  

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

Family
  
  

Group
-  
-  

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

Texture

Texture
Clastic  
Brecciated, Clastic  

Color
Beige, Black, Brown, Cream, Dark Brown, Green, Grey, Light Green, Light to Dark Grey, Pink, Red, White, Yellow  
Beige, Black, Blue, Brown, Buff, Green, Grey, Orange, Pink, Purple, Red, Rust, White, Yellow  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
Yes  
Yes  

Wind Resistant
Yes  
Yes  

Acid Resistant
No  
No  

Appearance
Dull  
Layered, Banded, Veined and Shiny  

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing, Whetstones  
Curbing  

Industry
  
  

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

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Sculpture, Small Figurines  
Artifacts, Sculpture  

Other Uses
  
  

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

Types

Types
Greywacke  
Collapse Breccia, Fault Breccia, Flow Breccia, Pyroclastic Breccia, Igneous Breccia and Impact Breccia  

Features
Available in Lots of Colors and Patterns, Generally rough to touch, Non-vesicular, Veined  
Available in Lots of Colors and Patterns, Clasts are smooth to touch  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Present  
Present  

Formation

Formation
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.  
Breccia is a clastic sedimentary rock which is composed of broken fragments of minerals or rock which are cemented together by a fine-grained matrix and it forms where broken, angular fragments of rock or mineral debris accumulate.   

Composition
  
  

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

Compound Content
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  
Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, Potassium Oxide, Sodium Oxide, Silicon Dioxide, Titanium Dioxide  

Transformation
  
  

Metamorphism
No  
Yes  

Types of Metamorphism
-  
Burial Metamorphism, Cataclastic Metamorphism  

Weathering
Yes  
Yes  

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

Erosion
Yes  
Yes  

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

Properties

Physical Properties
  
  

Hardness
6-7  
7  

Grain Size
Angular and Fine  
Medium to Coarse Grained  

Fracture
Conchoidal  
Uneven  

Streak
White  
White  

Porosity
Highly Porous  
Less Porous  

Luster
Dull  
Dull to Pearly  

Compressive Strength
120.00 N/mm2  
26
180.00 N/mm2  
18

Cleavage
Perfect  
-  

Toughness
2.6  
-  

Specific Gravity
2.2-2.8  
2.86-2.87  

Transparency
Opaque  
Opaque  

Density
2.6-2.61 g/cm3  
0 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.71 kJ/Kg K  
23
0.84 kJ/Kg K  
15

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

Reserves

Deposits in Eastern Continents
  
  

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

Africa
Namibia, Nigeria, South Africa  
Namibia, Nigeria, South Africa  

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

Others
Greenland  
Greenland  

Deposits in Western Continents
  
  

North America
Canada, USA  
Barbados, Canada, Mexico, Panama, USA  

South America
Brazil  
Brazil  

Deposits in Oceania Continent
  
  

Australia
New South Wales, New Zealand  
New South Wales, New Zealand  

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Greywacke vs Breccia 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 Greywacke and Breccia Reserves. Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material. 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 Greywacke vs Breccia information and Greywacke vs Breccia characteristics in the upcoming sections.

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

More about Greywacke and Breccia

Here you can know more about Greywacke and Breccia. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Greywacke and Breccia consists of mineral content and compound content. The mineral content of Greywacke includes Augite, Biotite, Calcite, Chlorite, Clay, Clay Minerals, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz and mineral content of Breccia includes Calcite, Clay, Feldspar, Phosphates, Quartz, Silica. You can also check out the list of all Sedimentary Rocks. When we have to compare Greywacke vs Breccia, the texture, color and appearance plays an important role in determining the type of rock. Greywacke is available in beige, black, brown, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas, Breccia is available in beige, black, blue, brown, buff, green, grey, orange, pink, purple, red, rust, white, yellow colors. Appearance of Greywacke is Dull and that of Breccia is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Greywacke vs Breccia. The hardness of Greywacke is 6-7 and that of Breccia is 7. The types of Greywacke are Greywacke whereas types of Breccia are Collapse Breccia, Fault Breccia, Flow Breccia, Pyroclastic Breccia, Igneous Breccia and Impact Breccia. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Greywacke and Breccia is white. The specific heat capacity of Greywacke is 0.71 kJ/Kg K and that of Breccia 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.Greywacke is heat resistant, impact resistant, pressure resistant whereas Breccia is heat resistant, impact resistant, pressure resistant, wear resistant.

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