Home
Compare Rocks


Greywacke vs Claystone


Claystone vs Greywacke


Definition

Definition
Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay  
Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay  

History
  
  

Origin
-  
-  

Discoverer
Unknown  
Unknown  

Etymology
From German Grauwacke, from grau grey + wacke  
From English clay and stone as the rock contains more amount of clay  

Class
Sedimentary Rocks  
Sedimentary Rocks  

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

Family
  
  

Group
-  
-  

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

Texture

Texture
Clastic  
Clastic  

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

Maintenance
Less  
More  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
Yes  
No  

Wind Resistant
Yes  
No  

Acid Resistant
No  
No  

Appearance
Dull  
Rough and Dull  

Uses

Architecture
  
  

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

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

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 a Sintering Agent in Steel Industry to process Iron Ore, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar  

Medical Industry
-  
-  

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

Other Uses
  
  

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

Types

Types
Greywacke  
Claystone  

Features
Available in Lots of Colors and Patterns, Generally rough to touch, Non-vesicular, Veined  
Available in Lots of Colors and Patterns, Smooth to touch, Very fine grained rock  

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.  
Claystone is generally quite soft, but can be hard and brittle. It forms due to weathering of mudstone.  

Composition
  
  

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

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, MgO, Silicon Dioxide  

Transformation
  
  

Metamorphism
No  
No  

Types of 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  
Coastal Erosion, Water Erosion  

Properties

Physical Properties
  
  

Hardness
6-7  
3.5-4  

Grain Size
Angular and Fine  
Fine Grained  

Fracture
Conchoidal  
-  

Streak
White  
White  

Porosity
Highly Porous  
Very Less Porous  

Luster
Dull  
Dull  

Compressive Strength
120.00 N/mm2  
26
40.00 N/mm2  
40

Cleavage
Perfect  
Perfect  

Toughness
2.6  
2.6  

Specific Gravity
2.2-2.8  
0  

Transparency
Opaque  
Opaque  

Density
2.6-2.61 g/cm3  
2-2.9 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.71 kJ/Kg K  
23
0.92 kJ/Kg K  
10

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

Reserves

Deposits in Eastern Continents
  
  

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

Africa
Namibia, Nigeria, South Africa  
Ethiopia, Kenya, Morocco, South Africa, Tanzania  

Europe
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom  
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland  

Others
Greenland  
-  

Deposits in Western Continents
  
  

North America
Canada, USA  
Canada, Panama, USA  

South America
Brazil  
Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela  

Deposits in Oceania Continent
  
  

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

Definition >>
<< All

Greywacke vs Claystone 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 Claystone Reserves. Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay. 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 Claystone information and Greywacke vs Claystone characteristics in the upcoming sections.

Compare Sedimentary Rocks

Greywacke vs Claystone 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 Claystone characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Greywacke and Properties of Claystone. Learn more about Greywacke vs Claystone in the next section. The interior uses of Greywacke include Decorative aggregates, Floor tiles, Flooring, Homes and Interior decoration whereas the interior uses of Claystone include Decorative aggregates, Entryways, Floor tiles, Homes and Interior decoration. Due to some exceptional properties of Greywacke and Claystone, 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 Claystone include As a sintering agent in steel industry to process iron ore, Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar.

More about Greywacke and Claystone

Here you can know more about Greywacke and Claystone. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Greywacke and Claystone 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 Claystone includes Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz. You can also check out the list of all Sedimentary Rocks. When we have to compare Greywacke vs Claystone, 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, Claystone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. Appearance of Greywacke is Dull and that of Claystone is Rough and Dull. Properties of rock is another aspect for Greywacke vs Claystone. The hardness of Greywacke is 6-7 and that of Claystone is 3.5-4. The types of Greywacke are Greywacke whereas types of Claystone are Claystone. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Greywacke and Claystone is white. The specific heat capacity of Greywacke is 0.71 kJ/Kg K and that of Claystone is 0.92 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 Claystone is heat resistant, impact resistant.

Sedimentary Rocks

Sedimentary Rocks

» More Sedimentary Rocks

Compare Sedimentary Rocks

» More Compare Sedimentary Rocks