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Chalk and Diorite


Diorite and Chalk


Definition

Definition
Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers   
Diorite is a grey to dark-grey intermediate intrusive igneous rock composed principally of plagioclase feldspar,biotite, hornblende, and pyroxene   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone   
From early 19th century coined in French, formed irregularly from Greek diorizein distinguish   

Class
Sedimentary Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Plutonic   

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

Texture

Texture
Clastic or Non-Clastic   
Phaneritic   

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

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
No   

Scratch Resistant
No   
No   

Stain Resistant
No   
No   

Wind Resistant
No   
Yes   

Acid Resistant
No   
No   

Appearance
Soft   
Shiny   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Homes, Interior Decoration   
Decorative Aggregates, Interior Decoration   

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

Other Architectural Uses
Powder   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, raw material for manufacture of quicklime and slaked lime, Source of calcium   
As Dimension Stone, Cement Manufacture, Cobblestones, Construction Aggregate, 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
Alumina Refineries, Creating Artwork, Drawing on blackboards, Gymnasts, athletes and mountain climbers use for grip, In aquifers, Paper Industry, Production of Lime, Raw material for manufacture of quicklime, slaked lime, Soil Conditioner, Whiting, Whiting material in toothpaste, paint and paper   
Creating Artwork, Curling   

Types

Types
Not Available   
Not Available   

Features
Clasts are smooth to touch, Is one of the oldest rock, Smooth to touch, Very fine grained rock   
Typically speckled black and white.   

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
Used   
Not Used   

Petroglyphs
Used   
Not Used   

Figurines
Used   
Used   

Fossils
Present   
Absent   

Formation

Formation
Chalk is formed from lime mud, which accumulates on the sea floor which is then transformed into rock by geological processes.   
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.   

Composition
  
  

Mineral Content
Calcite, Clay, Clay Minerals, Quartz, Sand   
Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Muscovite or Illite, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon   

Compound Content
Ca, NaCl, CaO   
Silicon Dioxide   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism   

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion   
Chemical Erosion, Coastal Erosion, Water Erosion   

Properties

Physical Properties
  
  

Hardness
1   
6-7   

Grain Size
Very fine-grained   
Medium to Coarse Grained   

Fracture
Not Available   
Not Available   

Streak
White   
Bluish Black   

Porosity
Highly Porous   
Very Less Porous   

Luster
Dull   
Shiny   

Compressive Strength
Not Available   
225.00 N/mm2   
7

Cleavage
Non-Existent   
Not Available   

Toughness
1   
2.1   

Specific Gravity
2.3-2.4   
2.8-3   

Transparency
Opaque   
Opaque   

Density
2.49-2.50 g/cm3   
2.8-3 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.90 kJ/Kg K   
12
Not Available   

Resistance
Heat Resistant   
Heat Resistant, Pressure Resistant, Wear Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam   
Not Yet Found   

Africa
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe   
Egypt   

Europe
England, France, Germany, Spain, United Kingdom   
Finland, Germany, Italy, Romania, Sweden, Turkey, United Kingdom   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, USA   
USA   

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

Deposits in Oceania Continent
  
  

Australia
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula   
New Zealand, Western Australia   

Summary >>
<< Reserves

All about Chalk and Diorite Properties

Know all about Chalk and Diorite properties here. All properties of rocks are important as they define the type of rock and its application. Chalk belongs to Sedimentary Rocks while Diorite belongs to Igneous Rocks.Texture of Chalk is Clastic or Non-Clastic whereas that of Diorite is Phaneritic. Chalk appears Soft and Diorite appears Shiny. The luster of Chalk is dull while that of Diorite is shiny. Chalk is available in grey, white, yellow colors whereas Diorite is available in black, brown, light to dark grey, white colors. The commercial uses of Chalk are alumina refineries, creating artwork, drawing on blackboards, gymnasts, athletes and mountain climbers use for grip, in aquifers, paper industry, production of lime, raw material for manufacture of quicklime, slaked lime, soil conditioner, whiting, whiting material in toothpaste, paint and paper and that of Diorite are creating artwork, curling.

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