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What is Siltstone?



Definition

Definition
Siltstone can be defined as a fine-grained sedimentary rock which mainly consists of consolidated silt

History

Origin
-

Discoverer
Unknown

Etymology
From English word silt and stone and from Proto-Indo-European root sal and stainaz

Class
Sedimentary Rocks

Sub-Class
Durable Rock, Hard Rock

Family

Group
-

Other Categories
Fine Grained Rock, Opaque Rock

Texture

Texture
Clastic

Color
Brown, Red, Reddish Brown

Maintenance
Less

Durability
Durable

Water Resistant
Yes

Scratch Resistant
Yes

Stain Resistant
No

Wind Resistant
Yes

Acid Resistant
Yes

Appearance
Rough

Uses

Architecture

Interior Uses
Decorative Aggregates, Interior Decoration

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

Other Architectural Uses
Curbing

Industry

Construction Industry
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

Other Uses

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

Types

Types
Siltstone

Features
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
Present

Formation

Formation
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
Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz, Sand, Silica, Silt

Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide

Transformation

Metamorphism
No

Types of Metamorphism
-

Weathering
Yes

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion
Yes

Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness
6-7

Grain Size
Fine Grained

Fracture
Conchoidal

Streak
White

Porosity
Highly Porous

Luster
Dull

Compressive Strength
30.00 N/mm2 44

Cleavage
-

Toughness
2.6

Specific Gravity
2.54-2.73

Transparency
Opaque

Density
2.6-2.7 g/cm3

Thermal Properties

Specific Heat Capacity
0.84 kJ/Kg K 15

Resistance
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
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom

Others
Greenland

Deposits in Western Continents

North America
Canada, USA

South America
Brazil

Deposits in Oceania Continent

Australia
New South Wales, New Zealand

Summary >>
<< Reserves

Sedimentary Rocks

Learn more about Properties of Siltstone

What is Siltstone? In this section, we will learn more about properties of Siltstone i.e. physical and thermal properties. Physical properties of Siltstone include Color, Streak, Hardness, Structure, Cleavage, Fracture, Luster, Specific Gravity etc. The strength of Siltstone is 30.00 N/mm2. Streak of Siltstone is white while its cleavage is . Luster of Siltstone is dull and its fracture is conchoidal. Siltstone is opaque in nature. Know all about Siltstone, What is Siltstone, its composition, features, facts and reserves in next sections.

Know about Composition of Siltstone

What is Siltstone composed of? Get to know about composition of Siltstone here. Siltstone definition gives information about the Formation of Siltstone and its composition.The composition of Siltstone can be further divided into mineral and compound content. The mineral content of Siltstone rock includes Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz, Sand, Silica, Silt and The compound content of Siltstone rock includes Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide. Almost all rocks undergo transformation process. Know all about Siltstone rock in next section.

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