Charnockite and Whiteschist
Definition
Definition
Charnockite is a variety of granite containing minerals like orthopyroxene, quartz, and feldspar
Whiteschist is an uncommon rock type belonging to a class of metamorphic rock, this is formed at high-ultra-high pressures
History
Origin
Tamil Nadu, India
Tasmania
Discoverer
T. H. Holland
Unknown
Etymology
From Job Charnock, an administtrator of East India Company
From French schiste, Greek skhistos i.e. split
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
Plutonic
Not Applicable
Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Texture
Texture
Granular
Foliated
Color
Black, Grey, Orange, Pink, White
Colourless, Green, Grey, White
Maintenance
Less
Less
Durability
Durable
Durable
Water Resistant
No
No
Scratch Resistant
Yes
Yes
Stain Resistant
Yes
Yes
Wind Resistant
No
No
Acid Resistant
Yes
No
Appearance
Veined or Pebbled
Banded and Foilated
Uses
Architecture
Interior Uses
Bathrooms, Countertops, Decorative Aggregates, Entryways, Floor Tiles, Homes, Hotels, Kitchens, Stair Treads
Decorative Aggregates, Interior Decoration
Exterior Uses
As Building Stone, As Facing Stone, Bridges, Paving Stone, Garden Decoration, Office Buildings, Resorts
Garden Decoration, Paving Stone
Other Architectural Uses
Curbing
Curbing
Industry
Construction Industry
As Dimension Stone
for Road Aggregate
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Monuments, Sculpture, Small Figurines
Other Uses
Commercial Uses
Curling, Gemstone, Laboratory bench tops, Tombstones
Creating Artwork, Gemstone, Jewelry, Production of Lime
Types
Types
Enderbite
Not Available
Features
Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock
High percentage of mica, Host Rock for Lead
Archaeological Significance
Monuments
Used
Used
Famous Monuments
Data Not Available
Data Not Available
Sculpture
Used
Used
Famous Sculptures
Data Not Available
Data Not Available
Pictographs
Not Used
Used
Petroglyphs
Not Used
Used
Figurines
Used
Used
Fossils
Absent
Absent
Formation
Formation
Charnockite is an intrusive igneous rock which is very hard and is formed due to weathering of existing rocks.
Whiteschist is formed by dynamic metamorphism at high temperatures and pressures that aligns the grains of mica, hornblende and other elongated minerals into thin layers.
Composition
Mineral Content
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Olivine, Plagioclase, Pyroxene, Quartz
Carbonate, Coesite, Quartz, Silica
Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
CaO, Mg, MgO, Silicon Dioxide
Transformation
Metamorphism
Yes
No
Types of Metamorphism
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism
Not Applicable
Weathering
Yes
Yes
Types of Weathering
Biological Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Erosion
Yes
Yes
Types of Erosion
Chemical Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion
Properties
Physical Properties
Hardness
6-7
1.5
Grain Size
Coarse Grained
Fine to Medium Grained
Fracture
Not Available
Conchoidal
Streak
White
White
Porosity
Very Less Porous
Less Porous
Luster
Not Available
Subvitreous to Dull
Compressive Strength
Not Available
200.00 N/mm2
10
Cleavage
Not Available
Perfect
Toughness
Not Available
1
Specific Gravity
Not Available
2.86
Transparency
Opaque
Opaque
Density
2.6 g/cm3
2.8-2.9 g/cm3
Thermal Properties
Specific Heat Capacity
Not Available
0.92 kJ/Kg K
10
Resistance
Heat Resistant, Wear Resistant
Heat Resistant
Reserves
Deposits in Eastern Continents
Asia
India
Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam
Africa
East Africa, Ethiopia, Madagascar, Morocco, Mozambique
Egypt, Ethiopia, Morocco, Nigeria, South Africa
Europe
Albania, Romania, Scotland, United Kingdom
Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland
Others
Not Yet Found
Not Yet Found
Deposits in Western Continents
North America
USA
Canada, Costa Rica, Cuba, Mexico, Panama, USA
South America
Brazil, Colombia, Venezuela
Brazil, Colombia, Guyana
Deposits in Oceania Continent
Australia
Central Australia, Western Australia
New South Wales, New Zealand, Queensland
All about Charnockite and Whiteschist Properties
Know all about Charnockite and Whiteschist properties here. All properties of rocks are important as they define the type of rock and its application. Charnockite belongs to Igneous Rocks while Whiteschist belongs to Metamorphic Rocks.Texture of Charnockite is Granular whereas that of Whiteschist is Foliated. Charnockite appears Veined or Pebbled and Whiteschist appears Banded and Foilated. The luster of Charnockite is not available while that of Whiteschist is subvitreous to dull. Charnockite is available in black, grey, orange, pink, white colors whereas Whiteschist is available in colourless, green, grey, white colors. The commercial uses of Charnockite are curling, gemstone, laboratory bench tops, tombstones and that of Whiteschist are creating artwork, gemstone, jewelry, production of lime.
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