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Diabase vs Chalk


Chalk vs Diabase


Definition

Definition
Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar  
Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers  

History
  
  

Origin
Germany  
Unknown  

Discoverer
Christian Leopold von Buch  
Unknown  

Etymology
From Greek di + base  
From old English cealc chalk, lime, plaster; pebble, from Greek khalix small pebble, in English transferred to the opaque, white, soft limestone  

Class
Igneous Rocks  
Sedimentary Rocks  

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

Family
  
  

Group
Volcanic  
Not Applicable  

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

Texture

Texture
Aphanitic, Granular  
Clastic or Non-Clastic  

Color
Dark Grey to Black  
Grey, White, Yellow  

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
Vesicular  
Soft  

Uses

Architecture
  
  

Interior Uses
Countertops, Decorative Aggregates, Homes, Interior Decoration, Kitchens  
Decorative Aggregates, Homes, Interior Decoration  

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

Other Architectural Uses
Curbing  
Powder  

Industry
  
  

Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate  
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  

Medical Industry
Not Available  
Not Available  

Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines  
Artifacts, Monuments, Sculpture, Small Figurines  

Other Uses
  
  

Commercial Uses
An Oil and Gas Reservoir, Cemetery Markers, Commemorative Tablets, Laboratory bench tops, Jewelry, Sea Defence, Tombstones  
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  

Types

Types
Not Available  
Not Available  

Features
Smooth to touch  
Clasts are smooth to touch, Is one of the oldest rock, Smooth to touch, Very fine grained rock  

Archaeological Significance
  
  

Monuments
Used  
Used  

Famous Monuments
Stonehenge in English county of Wiltshire  
Not Available  

Sculpture
Used  
Used  

Famous Sculptures
Not Available  
Not Available  

Pictographs
Not Used  
Used  

Petroglyphs
Not Used  
Used  

Figurines
Used  
Used  

Fossils
Absent  
Present  

Formation

Formation
Diabase forms when molten igneous rock is squeezed up into a vertical crack in other rocks, the crack is usually forced apart and the molten rock cools in the space to form a tabular igneous intrusion cutting across the surrounding rocks and is known as a dike.  
Chalk is formed from lime mud, which accumulates on the sea floor which is then transformed into rock by geological processes.  

Composition
  
  

Mineral Content
Augite, Chlorite, Olivine, Plagioclase, Pyroxene, Pyrrhotite, Serpentine  
Calcite, Clay, Clay Minerals, Quartz, Sand  

Compound Content
Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide  
Ca, NaCl, CaO  

Transformation
  
  

Metamorphism
Yes  
No  

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

Weathering
Yes  
Yes  

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

Erosion
Yes  
Yes  

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

Properties

Physical Properties
  
  

Hardness
7  
1  

Grain Size
Fine to Medium Grained  
Very fine-grained  

Fracture
Conchoidal  
Not Available  

Streak
Black  
White  

Porosity
Highly Porous  
Highly Porous  

Luster
Not Available  
Dull  

Compressive Strength
225.00 N/mm2  
7
Not Available  

Cleavage
Not Available  
Not Available  

Toughness
1.6  
1  

Specific Gravity
2.86-2.87  
2.3-2.4  

Transparency
Opaque  
Opaque  

Density
2.7-3.3 g/cm3  
2.49-2.50 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
Not Available  
0.90 kJ/Kg K  
12

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

Reserves

Deposits in Eastern Continents
  
  

Asia
India  
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam  

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

Europe
Germany, Greece, Italy, Scotland, Turkey  
England, France, Germany, Spain, United Kingdom  

Others
Antarctica, Greenland  
Not Available  

Deposits in Western Continents
  
  

North America
Canada, USA  
Canada, USA  

South America
Argentina, Brazil, Colombia, Venezuela  
Colombia  

Deposits in Oceania Continent
  
  

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

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Diabase vs Chalk 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 Diabase and Chalk Reserves. Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar. Chalk is a soft, white, powdery limestone consisting mainly of fossil shells of foraminifers. 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 Diabase vs Chalk information and Diabase vs Chalk characteristics in the upcoming sections.

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Diabase vs Chalk 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. Diabase vs Chalk characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Diabase and Properties of Chalk. Learn more about Diabase vs Chalk in the next section. The interior uses of Diabase include Countertops, Decorative aggregates, Homes, Interior decoration and Kitchens whereas the interior uses of Chalk include Decorative aggregates, Homes and Interior decoration. Due to some exceptional properties of Diabase and Chalk, they have various applications in construction industry. The uses of Diabase in construction industry include As dimension stone, Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate and that of Chalk include 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.

More about Diabase and Chalk

Here you can know more about Diabase and Chalk. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Diabase and Chalk consists of mineral content and compound content. The mineral content of Diabase includes Augite, Chlorite, Olivine, Plagioclase, Pyroxene, Pyrrhotite, Serpentine and mineral content of Chalk includes Calcite, Clay, Clay Minerals, Quartz, Sand. You can also check out the list of all Igneous Rocks. When we have to compare Diabase vs Chalk, the texture, color and appearance plays an important role in determining the type of rock. Diabase is available in dark grey to black colors whereas, Chalk is available in grey, white, yellow colors. Appearance of Diabase is Vesicular and that of Chalk is Soft. Properties of rock is another aspect for Diabase vs Chalk. The hardness of Diabase is 7 and that of Chalk is 1. The types of Diabase are Not Available whereas types of Chalk are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Diabase is black while that of Chalk is white. The specific heat capacity of Diabase is Not Available and that of Chalk is 0.90 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Diabase is heat resistant, impact resistant, pressure resistant, wear resistant whereas Chalk is heat resistant.

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