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Coal vs Trondhjemite


Trondhjemite vs Coal


Definition

Definition
Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds  
Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.  

History
  
  

Origin
USA  
Tonale, Italy  

Discoverer
John Peter Salley  
Unknown  

Etymology
From the Old English term col, which has meant mineral of fossilized carbon since the 13th century  
From Trondheim, Norway  

Class
Sedimentary Rocks  
Igneous Rocks  

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

Family
  
  

Group
-  
Plutonic  

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

Texture

Texture
Amorphous, Glassy  
Phaneritic  

Color
Black, Brown, Dark Brown, Grey, Light to Dark Grey  
Black, Brown, Light to Dark Grey, White  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
No  
Yes  

Scratch Resistant
No  
Yes  

Stain Resistant
No  
Yes  

Wind Resistant
No  
No  

Acid Resistant
No  
No  

Appearance
Veined or Pebbled  
Banded and Foilated  

Uses

Architecture
  
  

Interior Uses
-  
Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration  

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

Other Architectural Uses
-  
Curbing  

Industry
  
  

Construction Industry
Cement Manufacture, for Road Aggregate, Making natural cement, Steel Production  
As Dimension Stone, Cement Manufacture, Cobblestones, Construction Aggregate, for Road Aggregate  

Medical Industry
-  
-  

Antiquity Uses
Artifacts  
Artifacts, Monuments, Sculpture, Small Figurines  

Other Uses
  
  

Commercial Uses
Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry  
Cemetery Markers, Creating Artwork  

Types

Types
Peat, Lignite, Sub-Bituminous Coal, Bituminous Coal, Anthracite, Graphite  
Intermediate intrusive rock  

Features
Helps in production of Heat and Electricity, Used as fossil fuel  
Is one of the oldest rock, Typically speckled black and white.  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Present  
Absent  

Formation

Formation
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.  
When alkali feldspar is extracted from granite, it changes to granitoid and later, it becomes trondhjemite with quartz as major mineral.  

Composition
  
  

Mineral Content
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  
Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon  

Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur  
NaCl, CaO, MgO, Silicon Dioxide  

Transformation
  
  

Metamorphism
Yes  
Yes  

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism  
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism  

Weathering
No  
Yes  

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

Erosion
No  
Yes  

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

Properties

Physical Properties
  
  

Hardness
1-1.5  
6-7  

Grain Size
Medium to Fine Coarse Grained  
Medium to Fine Coarse Grained  

Fracture
Conchoidal  
Conchoidal  

Streak
Black  
Bluish Black  

Porosity
Less Porous  
Very Less Porous  

Luster
Dull to Vitreous to Submetallic  
Subvitreous to Dull  

Compressive Strength
-  
130.00 N/mm2  
24

Cleavage
-  
-  

Toughness
-  
2.1  

Specific Gravity
1.1-1.4  
2.86-3  

Transparency
Opaque  
Opaque  

Density
1100-1400 g/cm3  
2.73 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
1.32 kJ/Kg K  
4
0.92 kJ/Kg K  
10

Resistance
Heat Resistant  
Heat Resistant, Pressure Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam  
-  

Africa
Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania  
Egypt  

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

Others
-  
-  

Deposits in Western Continents
  
  

North America
Canada, Mexico, USA  
USA  

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

Deposits in Oceania Continent
  
  

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

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Coal vs Trondhjemite 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 Coal and Trondhjemite Reserves. Coal is a combustible black or brownish-black sedimentary rock usually occurring in rock strata in layers called coal beds. Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.. 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 Coal vs Trondhjemite information and Coal vs Trondhjemite characteristics in the upcoming sections.

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Coal vs Trondhjemite 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. Coal vs Trondhjemite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Coal and Properties of Trondhjemite. Learn more about Coal vs Trondhjemite in the next section. The interior uses of Coal include whereas the interior uses of Trondhjemite include Decorative aggregates, Entryways, Flooring, Homes and Interior decoration. Due to some exceptional properties of Coal and Trondhjemite, they have various applications in construction industry. The uses of Coal in construction industry include Cement manufacture, For road aggregate, Making natural cement, Steel production and that of Trondhjemite include As dimension stone, Cement manufacture, Cobblestones, Construction aggregate, For road aggregate.

More about Coal and Trondhjemite

Here you can know more about Coal and Trondhjemite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Coal and Trondhjemite consists of mineral content and compound content. The 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 and mineral content of Trondhjemite includes Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon. You can also check out the list of all Sedimentary Rocks. When we have to compare Coal vs Trondhjemite, the texture, color and appearance plays an important role in determining the type of rock. Coal is available in black, brown, dark brown, grey, light to dark grey colors whereas, Trondhjemite is available in black, brown, light to dark grey, white colors. Appearance of Coal is Veined or Pebbled and that of Trondhjemite is Banded and Foilated. Properties of rock is another aspect for Coal vs Trondhjemite. The hardness of Coal is 1-1.5 and that of Trondhjemite is 6-7. The types of Coal are Peat, Lignite, Sub-Bituminous Coal, Bituminous Coal, Anthracite, Graphite whereas types of Trondhjemite are Intermediate intrusive rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Coal is black while that of Trondhjemite is bluish black. The specific heat capacity of Coal is 1.32 kJ/Kg K and that of Trondhjemite 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.Coal is heat resistant whereas Trondhjemite is heat resistant, pressure resistant, wear resistant.

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