Definition
Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.
  
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture
  
History
  
  
Origin
Central Europe
  
Unknown
  
Discoverer
Unknown
  
Unknown
  
Etymology
From Latin granulum, a little grain or fine grained
  
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use
  
Class
Metamorphic Rocks
  
Sedimentary Rocks
  
Sub-Class
Durable Rock, Hard Rock
  
Durable Rock, Hard Rock
  
Family
  
  
Group
Not Applicable
  
Not Applicable
  
Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
  
Fine Grained Rock, Opaque Rock
  
Texture
Granoblastic
  
Banded, Rough
  
Color
Black, Brown
  
Black, Brown, Green, Grey, Red, White
  
Maintenance
Less
  
Less
  
Durability
Durable
  
Durable
  
Water Resistant
Yes
  
Yes
  
Scratch Resistant
Yes
  
Yes
  
Stain Resistant
Yes
  
Yes
  
Wind Resistant
No
  
No
  
Acid Resistant
No
  
Yes
  
Appearance
Veined or Pebbled
  
Glassy or Pearly
  
Architecture
  
  
Interior Uses
Bathrooms, Countertops, Decorative Aggregates, Entryways, Flooring, Homes, Hotels, Interior Decoration, Kitchens, Stair Treads
  
Decorative Aggregates, Homes
  
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
  
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings
  
Other Architectural Uses
Curbing
  
Curbing
  
Industry
  
  
Construction Industry
As Dimension Stone, Building houses or walls
  
Arrowheads, Construction Aggregate, Cutting Tool, Spear Points
  
Medical Industry
Not Yet Used
  
Not Yet Used
  
Antiquity Uses
Artifacts, Monuments, Sculpture
  
Artifacts, Monuments
  
Other Uses
  
  
Commercial Uses
Curling, Gemstone, Laboratory bench tops, Soil Conditioner, Tombstones
  
Creating Artwork, Gemstone, In fire-starting tools, Jewelry, To ignite fire, Used in flintlock firearms
  
Types
Not Available
  
Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter
  
Features
Clasts are smooth to touch
  
Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate
  
Archaeological Significance
  
  
Monuments
Used
  
Used
  
Famous Monuments
Data Not Available
  
Data Not Available
  
Sculpture
Used
  
Not Yet Used
  
Famous Sculptures
Data Not Available
  
Not Applicable
  
Pictographs
Not Used
  
Not Used
  
Petroglyphs
Not Used
  
Not Used
  
Figurines
Used
  
Not Yet Used
  
Fossils
Absent
  
Present
  
Formation
Granulite is a fine-grained granular metamorphic rock in which the main component minerals are feldspars and quartz and forms at high temperature and pressure conditions.
  
Chert forms when microcrystals of silicon dioxide grow within soft sediments that become limestone or chalk. The chert formation can be either of chemical or biological origin.
  
Composition
  
  
Mineral Content
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Quartz
  
Quartz, Silicon
  
Compound Content
Aluminium Oxide, CaO, Carbon Dioxide, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Sulfur Dioxide, Titanium Dioxide
  
Silicon Dioxide
  
Transformation
  
  
Metamorphism
No
  
No
  
Types of Metamorphism
Not Applicable
  
Not Applicable
  
Weathering
Yes
  
No
  
Types of Weathering
Biological Weathering, Chemical Weathering
  
Not Applicable
  
Erosion
Yes
  
Yes
  
Types of Erosion
Chemical Erosion, Water Erosion, Wind Erosion
  
Chemical Erosion
  
Physical Properties
  
  
Hardness
6-7
  
6.5-7
  
Grain Size
Medium to Coarse Grained
  
Very fine-grained
  
Fracture
Not Available
  
Uneven, Splintery or Conchoidal
  
Streak
White
  
White
  
Porosity
Very Less Porous
  
Highly Porous
  
Luster
Vitreous
  
Waxy and Dull
  
Compressive Strength
175.00 N/mm
2
  
13
450.00 N/mm
2
  
1
Cleavage
Imperfect
  
Non-Existent
  
Toughness
Not Available
  
1.5
  
Specific Gravity
2.8-3.0
  
2.5-2.8
  
Transparency
Opaque
  
Translucent to Opaque
  
Density
3.06-3.33 g/cm3
  
2.7 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
0.14 kJ/Kg K
  
26
0.74 kJ/Kg K
  
19
Resistance
Heat Resistant, Wear Resistant
  
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
  
Deposits in Eastern Continents
  
  
Asia
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
  
China, India, Iran, Japan, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
  
Africa
Angola, Egypt, Madagascar, Nigeria, South Africa
  
Kenya, Morocco, South Africa, Tanzania
  
Europe
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela
  
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
  
Others
Not Yet Found
  
Greenland, Mid-Atlantic Ridge
  
Deposits in Western Continents
  
  
North America
Canada, USA
  
Canada, Mexico, USA
  
South America
Not Yet Found
  
Bolivia, Brazil
  
Deposits in Oceania Continent
  
  
Australia
Not Yet Found
  
New South Wales, Queensland, South Australia, Western Australia
  
Granulite vs Chert 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. Granulite vs Chert characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Granulite and Properties of Chert. Learn more about Granulite vs Chert in the next section. The interior uses of Granulite include Bathrooms, Countertops, Decorative aggregates, Entryways, Flooring, Homes, Hotels, Interior decoration, Kitchens and Stair treads whereas the interior uses of Chert include Decorative aggregates and Homes. Due to some exceptional properties of Granulite and Chert, they have various applications in construction industry. The uses of Granulite in construction industry include As dimension stone, Building houses or walls and that of Chert include Arrowheads, Construction aggregate, Cutting tool, Spear points.
More about Granulite and Chert
Here you can know more about Granulite and Chert. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Granulite and Chert consists of mineral content and compound content. The mineral content of Granulite includes Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Quartz and mineral content of Chert includes Quartz, Silicon. You can also check out the list of all . When we have to compare Granulite vs Chert, the texture, color and appearance plays an important role in determining the type of rock. Granulite is available in black, brown colors whereas, Chert is available in black, brown, green, grey, red, white colors. Appearance of Granulite is Veined or Pebbled and that of Chert is Glassy or Pearly. Properties of rock is another aspect for Granulite vs Chert. The hardness of Granulite is 6-7 and that of Chert is 6.5-7. The types of Granulite are Not Available whereas types of Chert are Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Granulite and Chert is white. The specific heat capacity of Granulite is 0.14 kJ/Kg K and that of Chert is 0.74 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Granulite is heat resistant, wear resistant whereas Chert is heat resistant, impact resistant, pressure resistant, wear resistant.