Home
Compare Rocks


Quartzite vs Coal


Coal vs Quartzite


Definition

Definition
Quartzite is a non-foliated metamorphic rock that forms by the metamorphism of pure quartz Sandstone  
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds  

History
  
  

Origin
-  
USA  

Discoverer
Unknown  
John Peter Salley  

Etymology
From quartz + -ite  
From the Old English term col, which has meant mineral of fossilized carbon since the 13th century  

Class
Metamorphic Rocks  
Sedimentary Rocks  

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

Family
  
  

Group
-  
-  

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

Texture

Texture
Foliated, Granular  
Amorphous, Glassy  

Color
Black, Blue, Brown, Green, Light Grey, Purple, White, Yellow  
Black, Brown, Dark Brown, Grey, Light to Dark Grey  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
No  

Scratch Resistant
Yes  
No  

Stain Resistant
Yes  
No  

Wind Resistant
Yes  
No  

Acid Resistant
Yes  
No  

Appearance
Lustrous  
Veined or Pebbled  

Uses

Architecture
  
  

Interior Uses
Countertops, Decorative Aggregates, Flooring, Homes  
-  

Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone  
-  

Other Architectural Uses
Curbing  
-  

Industry
  
  

Construction Industry
Arrowheads, As Dimension Stone, Cement Manufacture, Construction Aggregate, Cutting Tool, for Road Aggregate, Making natural cement, Production of Glass and Ceramics, Rail Track Ballast, Roadstone  
Cement Manufacture, for Road Aggregate, Making natural cement, Steel Production  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Jewellery, Monuments, Sculpture  
Artifacts  

Other Uses
  
  

Commercial Uses
An Oil and Gas Reservoir, As armour rock for sea walls, Cemetery Markers, Commemorative Tablets, In aquifers, Laboratory bench tops, Petroleum reservoirs, Soil Conditioner, Source of Magnesia (MgO), Tombstones, Used in aquariums  
Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry  

Types

Types
Orthoquartzite and Metaquartzite  
Peat, Lignite, Sub-Bituminous Coal, Bituminous Coal, Anthracite, Graphite  

Features
Generally rough to touch, Is one of the oldest rock  
Helps in production of Heat and Electricity, Used as fossil fuel  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Present  

Formation

Formation
Quartzite forms from sandstone and the mineral quartz being put under extreme heat and pressure.   
Coal forms from the accumulation of plant debris in a swamp environment which is buried by sediments such as mud or sand and then compacted to form coal.  

Composition
  
  

Mineral Content
Chlorite, Epidote, Hematite, Kyanite, Magnetite, Muscovite or Illite, Quartz  
Analcime, Apatite, Barite, Calcite, Chalcopyrite, Chlorite, Chromite, Clausthalite, Clay Minerals, Crandallite Group, Dolomite, Feldspar, Galena, Gypsum, Marcasite, Muscovite or Illite, Pyrite, Quartz, Siderite, Sphalerite, Zircon  

Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, MgO, Sodium Oxide, Silicon Dioxide  
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur  

Transformation
  
  

Metamorphism
Yes  
Yes  

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Regional Metamorphism  
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism  

Weathering
Yes  
No  

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

Erosion
Yes  
No  

Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion  
-  

Properties

Physical Properties
  
  

Hardness
6-7  
1-1.5  

Grain Size
Medium Grained  
Medium to Fine Coarse Grained  

Fracture
Uneven, Splintery or Conchoidal  
Conchoidal  

Streak
White  
Black  

Porosity
Less Porous  
Less Porous  

Luster
Vitreous  
Dull to Vitreous to Submetallic  

Compressive Strength
115.00 N/mm2  
27
-  

Cleavage
Indiscernible  
-  

Toughness
1.9  
-  

Specific Gravity
2.6-2.8  
1.1-1.4  

Transparency
Transparent to Translucent  
Opaque  

Density
2.32-2.42 g/cm3  
1100-1400 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.75 kJ/Kg K  
20
1.32 kJ/Kg K  
4

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

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Israel, Russia, South Korea, Thailand, Turkey  
Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam  

Africa
Ethiopia, Morocco, South Africa, Zimbabwe  
Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania  

Europe
England, Italy, Norway, Scotland, Sweden, United Kingdom  
Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom  

Others
Greenland  
-  

Deposits in Western Continents
  
  

North America
Bahamas, Canada, USA  
Canada, Mexico, USA  

South America
Brazil, Colombia, Venezuela  
Brazil, Chile, Colombia, Venezuela  

Deposits in Oceania Continent
  
  

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

Definition >>
<< All

Quartzite vs Coal 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 Quartzite and Coal Reserves. Quartzite is a non-foliated metamorphic rock that forms by the metamorphism of pure quartz Sandstone. Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds. 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 Quartzite vs Coal information and Quartzite vs Coal characteristics in the upcoming sections.

Compare Metamorphic Rocks

Quartzite vs Coal 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. Quartzite vs Coal characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Quartzite and Properties of Coal. Learn more about Quartzite vs Coal in the next section. The interior uses of Quartzite include Countertops, Decorative aggregates, Flooring and Homes whereas the interior uses of Coal include . Due to some exceptional properties of Quartzite and Coal, they have various applications in construction industry. The uses of Quartzite in construction industry include Arrowheads, As dimension stone, Cement manufacture, Construction aggregate, Cutting tool, For road aggregate, Making natural cement, Production of glass and ceramics, Rail track ballast, Roadstone and that of Coal include Cement manufacture, For road aggregate, Making natural cement, Steel production.

More about Quartzite and Coal

Here you can know more about Quartzite and Coal. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Quartzite and Coal consists of mineral content and compound content. The mineral content of Quartzite includes Chlorite, Epidote, Hematite, Kyanite, Magnetite, Muscovite or Illite, Quartz and mineral content of Coal includes Analcime, Apatite, Barite, Calcite, Chalcopyrite, Chlorite, Chromite, Clausthalite, Clay Minerals, Crandallite Group, Dolomite, Feldspar, Galena, Gypsum, Marcasite, Muscovite or Illite, Pyrite, Quartz, Siderite, Sphalerite, Zircon. You can also check out the list of all Metamorphic Rocks. When we have to compare Quartzite vs Coal, the texture, color and appearance plays an important role in determining the type of rock. Quartzite is available in black, blue, brown, green, light grey, purple, white, yellow colors whereas, Coal is available in black, brown, dark brown, grey, light to dark grey colors. Appearance of Quartzite is Lustrous and that of Coal is Veined or Pebbled. Properties of rock is another aspect for Quartzite vs Coal. The hardness of Quartzite is 6-7 and that of Coal is 1-1.5. The types of Quartzite are Orthoquartzite and Metaquartzite whereas types of Coal are Peat, Lignite, Sub-Bituminous Coal, Bituminous Coal, Anthracite, Graphite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Quartzite is white while that of Coal is black. The specific heat capacity of Quartzite is 0.75 kJ/Kg K and that of Coal is 1.32 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Quartzite is heat resistant, impact resistant, pressure resistant, wear resistant whereas Coal is heat resistant.

Metamorphic Rocks

Metamorphic Rocks

» More Metamorphic Rocks

Compare Metamorphic Rocks

» More Compare Metamorphic Rocks