Diorite and Charnockite
Definition
Definition
Diorite is a grey to dark-grey intermediate intrusive igneous rock composed principally of plagioclase feldspar,biotite, hornblende, and pyroxene
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
History
Origin
Unknown
Tamil Nadu, India
Discoverer
Unknown
T. H. Holland
Etymology
From early 19th century coined in French, formed irregularly from Greek diorizein distinguish
From Job Charnock, an administtrator of East India Company
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Plutonic
Plutonic
Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock
Texture
Texture
Phaneritic
Granular
Color
Black, Brown, Light to Dark Grey, White
Black, Grey, Orange, Pink, White
Maintenance
Less
Less
Durability
Durable
Durable
Water Resistant
No
No
Scratch Resistant
No
Yes
Stain Resistant
No
Yes
Wind Resistant
Yes
No
Acid Resistant
No
Yes
Appearance
Shiny
Veined or Pebbled
Uses
Architecture
Interior Uses
Decorative Aggregates, Interior Decoration
Bathrooms, Countertops, Decorative Aggregates, Entryways, Floor Tiles, Homes, Hotels, Kitchens, Stair Treads
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration
As Building Stone, As Facing Stone, Bridges, Paving Stone, Garden Decoration, Office Buildings, Resorts
Other Architectural Uses
Curbing
Curbing
Industry
Construction Industry
As Dimension Stone, Cement Manufacture, Cobblestones, Construction Aggregate, for Road Aggregate
As Dimension Stone
Medical Industry
Not Available
Not Available
Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Monuments, Sculpture, Small Figurines
Other Uses
Commercial Uses
Creating Artwork, Curling
Curling, Gemstone, Laboratory bench tops, Tombstones
Types
Types
Not Available
Enderbite
Features
Typically speckled black and white.
Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock
Archaeological Significance
Monuments
Used
Used
Famous Monuments
Not Available
Not Available
Sculpture
Used
Used
Famous Sculptures
Not Available
Not Available
Pictographs
Not Used
Not Used
Petroglyphs
Not Used
Not Used
Figurines
Used
Used
Fossils
Absent
Absent
Formation
Formation
Diorite is a coarse-grained intrusive igneous rock which contains large interlocking and randomly oriented crystals and forms when molten lava does not reach the Earth’s surface and cools down in the Earth’s crust.
Charnockite is an intrusive igneous rock which is very hard and is formed due to weathering of existing rocks.
Composition
Mineral Content
Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Muscovite or Illite, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Olivine, Plagioclase, Pyroxene, Quartz
Compound Content
Silicon Dioxide
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
Transformation
Metamorphism
Yes
Yes
Types of Metamorphism
Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism
Weathering
Yes
Yes
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering
Erosion
Yes
Yes
Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion
Chemical Erosion, Water Erosion, Wind Erosion
Properties
Physical Properties
Hardness
6-7
6-7
Grain Size
Medium to Coarse Grained
Coarse Grained
Fracture
Not Available
Not Available
Streak
Bluish Black
White
Porosity
Very Less Porous
Very Less Porous
Luster
Shiny
Not Available
Compressive Strength
225.00 N/mm2
7
Not Available
Cleavage
Not Available
Not Available
Toughness
2.1
Not Available
Specific Gravity
2.8-3
Not Available
Transparency
Opaque
Opaque
Density
2.8-3 g/cm3
2.6 g/cm3
Thermal Properties
Resistance
Heat Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Wear Resistant
Reserves
Deposits in Eastern Continents
Asia
Not Available
India
Africa
Egypt
East Africa, Ethiopia, Madagascar, Morocco, Mozambique
Europe
Finland, Germany, Italy, Romania, Sweden, Turkey, United Kingdom
Albania, Romania, Scotland, United Kingdom
Others
Not Available
Not Available
Deposits in Western Continents
North America
USA
USA
South America
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru
Brazil, Colombia, Venezuela
Deposits in Oceania Continent
Australia
New Zealand, Western Australia
Central Australia, Western Australia
All about Diorite and Charnockite Properties
Know all about Diorite and Charnockite properties here. All properties of rocks are important as they define the type of rock and its application. Diorite and Charnockite belong to Igneous Rocks.Texture of Diorite is Phaneritic whereas that of Charnockite is Granular. Diorite appears Shiny and Charnockite appears Veined or Pebbled. The luster of Diorite is shiny while that of Charnockite is not available. Diorite is available in black, brown, light to dark grey, white colors whereas Charnockite is available in black, grey, orange, pink, white colors. The commercial uses of Diorite are creating artwork, curling and that of Charnockite are curling, gemstone, laboratory bench tops, tombstones.
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