Home
Compare Rocks


Anorthosite vs Siltstone


Siltstone vs Anorthosite


Definition

Definition
Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase   
Siltstone can be defined as a fine-grained sedimentary rock which mainly consists of consolidated silt   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From French anorthose plagioclase + -ite1   
From English word silt and stone and from Proto-Indo-European root sal and stainaz   

Class
Igneous Rocks   
Sedimentary Rocks   

Sub-Class
Durable Rock, Medium Hardness Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Plutonic   
Not Applicable   

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

Texture

Texture
Foliated, Glassy   
Clastic   

Color
Black, Bluish - Grey, Brown, Green, Grey, Light Greenish Grey, Pink, White   
Brown, Red, Reddish Brown   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
No   
Yes   

Stain Resistant
No   
No   

Wind Resistant
Yes   
Yes   

Acid Resistant
No   
Yes   

Appearance
Layered, Banded, Veined and Shiny   
Rough   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration   
Decorative Aggregates, Interior Decoration   

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate   
Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar   

Medical Industry
Not Yet Used   
Not Yet Used   

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

Other Uses
  
  

Commercial Uses
Creating Artwork, Curling   
Raw material for the manufacture of mortar, Soil Conditioner   

Types

Types
Proterozoic Anorthosite and Archean Anorthosite   
Not Available   

Features
Generally rough to touch, Is one of the oldest rock   
Available in Lots of Colors and Patterns, Easily splits into thin plates, Generally rough to touch, High silica content, Very fine grained rock   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Not Yet Used   

Famous Monuments
Not Applicable   
Not Applicable   

Sculpture
Used   
Used   

Famous Sculptures
Not Applicable   
Data Not Available   

Pictographs
Not Used   
Not Used   

Petroglyphs
Not Used   
Not Used   

Figurines
Used   
Used   

Fossils
Absent   
Present   

Formation

Formation
Anorthosite is a phaneritic, intrusive igneous rock which is characterized by a predominance of plagioclase feldspar which is almost 90–100%, and a minimal mafic component.   
Siltstone is a type of sedimentary rock which is formed from fine rock particles. As the particles of eroded rock travel along with water, the edges of the rock are worn-out by water into a rounded shape.   

Composition
  
  

Mineral Content
Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene   
Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz, Sand, Silica, Silt   

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

Transformation
  
  

Metamorphism
Yes   
No   

Types of Metamorphism
Cataclastic Metamorphism, Contact 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, Wind Erosion   
Chemical Erosion, Coastal Erosion, Glacier Erosion   

Properties

Physical Properties
  
  

Hardness
5-6   
6-7   

Grain Size
Coarse Grained   
Fine Grained   

Fracture
Irregular   
Conchoidal   

Streak
White   
White   

Porosity
Less Porous   
Highly Porous   

Luster
Pearly to Subvitreous   
Dull   

Cleavage
Irregular   
Not Available   

Toughness
Not Available   
2.6   

Specific Gravity
2.62-2.82   
2.54-2.73   

Transparency
Translucent   
Opaque   

Density
2.7-4 g/cm3   
2.6-2.7 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.84 kJ/Kg K   
15
Not Available   

Resistance
Heat Resistant, Impact Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant   
Heat Resistant, Impact Resistant, Pressure Resistant, Water Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
Not Yet Found   
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan   

Africa
Not Yet Found   
Namibia, Nigeria, South Africa   

Europe
Bulgaria, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Malta, Poland, Portugal, Romania, Slovenia, Spain, Sweden, The Czech Republic   
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom   

Others
Not Yet Found   
Greenland   

Deposits in Western Continents
  
  

North America
Canada   
Canada, USA   

South America
Bolivia, Colombia   
Brazil   

Deposits in Oceania Continent
  
  

Australia
Central Australia, South Australia, Western Australia   
New South Wales, New Zealand   

Definition >>
<< All

Anorthosite vs Siltstone 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 Anorthosite and Siltstone Reserves. Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase. Siltstone can be defined as a fine-grained sedimentary rock which mainly consists of consolidated silt. 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 Anorthosite vs Siltstone information and Anorthosite vs Siltstone characteristics in the upcoming sections.

Compare Igneous Rocks

Anorthosite vs Siltstone 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. Anorthosite vs Siltstone characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Anorthosite and Properties of Siltstone. Learn more about Anorthosite vs Siltstone in the next section. The interior uses of Anorthosite include Decorative aggregates, Floor tiles, Homes and Interior decoration whereas the interior uses of Siltstone include Decorative aggregates and Interior decoration. Due to some exceptional properties of Anorthosite and Siltstone, they have various applications in construction industry. The uses of Anorthosite in construction industry include As dimension stone, Cement manufacture, For road aggregate and that of Siltstone include Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar.

More about Anorthosite and Siltstone

Here you can know more about Anorthosite and Siltstone. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Anorthosite and Siltstone consists of mineral content and compound content. The mineral content of Anorthosite includes Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene and mineral content of Siltstone includes Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz, Sand, Silica, Silt. You can also check out the list of all Igneous Rocks. When we have to compare Anorthosite vs Siltstone, the texture, color and appearance plays an important role in determining the type of rock. Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors whereas, Siltstone is available in brown, red, reddish brown colors. Appearance of Anorthosite is Layered, Banded, Veined and Shiny and that of Siltstone is Rough. Properties of rock is another aspect for Anorthosite vs Siltstone. The hardness of Anorthosite is 5-6 and that of Siltstone is 6-7. The types of Anorthosite are Proterozoic Anorthosite and Archean Anorthosite whereas types of Siltstone are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Anorthosite and Siltstone is white. The specific heat capacity of Anorthosite is 0.84 kJ/Kg K and that of Siltstone is Not Available. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Anorthosite is heat resistant, impact resistant, pressure resistant, scratch resistant, wear resistant whereas Siltstone is heat resistant, impact resistant, pressure resistant, water resistant.

Igneous Rocks

Igneous Rocks

» More Igneous Rocks

Compare Igneous Rocks

» More Compare Igneous Rocks