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Anorthosite
Anorthosite

Siltstone
Siltstone



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Anorthosite
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Siltstone

Anorthosite vs Siltstone

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

Origin

-
-

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
-

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

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

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

-
-

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
Siltstone

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

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

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

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism
-

Weathering

Types of Weathering

Biological Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

Chemical Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

5-66-7
1 7
👆🏻

Grain Size

Coarse Grained
Fine Grained

Fracture

Irregular
Conchoidal

Streak

White
White

Porosity

Less Porous
Highly Porous

Luster

Pearly to Subvitreous
Dull

Compressive Strength

180.00 N/mm230.00 N/mm2
0.15 450
👆🏻

Cleavage

-
-

Toughness

-
2.6

Specific Gravity

2.62-2.822.54-2.73
0 8.4
👆🏻

Transparency

Translucent
Opaque

Density

2.7-4 g/cm32.6-2.7 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.84 kJ/Kg K
0.14 3.2
👆🏻

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

-
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan

Africa

-
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

-
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

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.

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 Siltstone. 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 0.84 kJ/Kg K. 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.