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Slate vs Icelandite


Icelandite vs Slate


Definition

Definition
Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism  
Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock  

History
  
  

Origin
England  
Iceland  

Discoverer
Abraham Gottlob Werner  
Ian S. E. Carmichael  

Etymology
From Old French esclate, from esclat (French éclat)  
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland  

Class
Metamorphic Rocks  
Igneous Rocks  

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

Family
  
  

Group
-  
Volcanic  

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

Texture

Texture
Foliated  
Aphanitic to Porphyritic  

Color
Black, Brown, Buff, Green, Light to Dark Grey, Purple, Red, Shades of Blue  
Bluish - Grey, Grey, Pink, Yellow  

Maintenance
Less  
More  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
Yes  
No  

Wind Resistant
No  
Yes  

Acid Resistant
No  
No  

Appearance
Dull  
Dull and Soft  

Uses

Architecture
  
  

Interior Uses
Bathrooms, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Interior Decoration, Kitchens, Stair Treads  
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration, Kitchens  

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

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
As Dimension Stone  
Cobblestones, Construction Aggregate, for Road Aggregate  

Medical Industry
-  
-  

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

Other Uses
  
  

Commercial Uses
Blackboards, Commemorative Tablets, Laboratory bench tops, Standard material for the bed of Billiard table, Standard material for the beds of Pool and Snooker table, Tombstones, Used in aquariums, Writing Slates  
Cemetery Markers, Creating Artwork  

Types

Types
Phyllite, Schist, and Slate  
Intermediate volcanic rock  

Features
Easily splits into thin plates, Surfaces are often shiny, Very fine grained rock  
Generally rough to touch, High silica content, Is one of the oldest rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Slate is a low grade metamorphic rock that is generally formed by metamorphosis of mudstone or shale, under relatively low pressure and temperature conditions.  
Icelandite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.  

Composition
  
  

Mineral Content
Apatite, Biotite, Chlorite, Feldspar, Graphite, Hematite, Kaolinite, Magnetite, Pyrite, Tourmaline, Zircon  
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon  

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

Transformation
  
  

Metamorphism
Yes  
Yes  

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism  
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism  

Weathering
Yes  
Yes  

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

Erosion
Yes  
Yes  

Types of Erosion
Coastal Erosion, Glacier Erosion, Water Erosion, Wind Erosion  
Chemical Erosion, Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion  

Properties

Physical Properties
  
  

Hardness
3-4  
7  

Grain Size
Very fine-grained  
Very fine-grained  

Fracture
Splintery  
Uneven  

Streak
Light to dark brown  
White  

Porosity
Less Porous  
Less Porous  

Luster
Dull  
Vitreous  

Compressive Strength
30.00 N/mm2  
99+
200.00 N/mm2  
13

Cleavage
Slaty  
-  

Toughness
1.2  
1.1  

Specific Gravity
2.65-2.8  
2.5-2.8  

Transparency
Opaque  
Opaque  

Density
2.6-2.8 g/cm3  
2.11-2.36 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.76 kJ/Kg K  
19
2.39 kJ/Kg K  
2

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

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Turkey  
India, Indonesia, Japan, Nepal, South Korea  

Africa
-  
Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania  

Europe
Belgium, France, Germany, Italy, Norway, Portugal, Spain, United Kingdom  
Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom  

Others
Arctic  
-  

Deposits in Western Continents
  
  

North America
USA  
Mexico, USA  

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

Deposits in Oceania Continent
  
  

Australia
-  
New South Wales, New Zealand, Western Australia  

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Slate vs Icelandite 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 Slate and Icelandite Reserves. Slate is a fine-grained, foliated, homogeneous metamorphic rock derived from an original shale-type sedimentary rock composed of clay or volcanic ash through low-grade regional metamorphism. Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock. 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 Slate vs Icelandite information and Slate vs Icelandite characteristics in the upcoming sections.

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Slate vs Icelandite 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. Slate vs Icelandite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Slate and Properties of Icelandite. Learn more about Slate vs Icelandite in the next section. The interior uses of Slate include Bathrooms, Decorative aggregates, Entryways, Floor tiles, Flooring, Homes, Hotels, Interior decoration, Kitchens and Stair treads whereas the interior uses of Icelandite include Decorative aggregates, Floor tiles, Homes, Interior decoration and Kitchens. Due to some exceptional properties of Slate and Icelandite, they have various applications in construction industry. The uses of Slate in construction industry include As dimension stone and that of Icelandite include Cobblestones, Construction aggregate, For road aggregate.

More about Slate and Icelandite

Here you can know more about Slate and Icelandite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Slate and Icelandite consists of mineral content and compound content. The mineral content of Slate includes Apatite, Biotite, Chlorite, Feldspar, Graphite, Hematite, Kaolinite, Magnetite, Pyrite, Tourmaline, Zircon and mineral content of Icelandite includes Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon. You can also check out the list of all Metamorphic Rocks. When we have to compare Slate vs Icelandite, the texture, color and appearance plays an important role in determining the type of rock. Slate is available in black, brown, buff, green, light to dark grey, purple, red, shades of blue colors whereas, Icelandite is available in bluish - grey, grey, pink, yellow colors. Appearance of Slate is Dull and that of Icelandite is Dull and Soft. Properties of rock is another aspect for Slate vs Icelandite. The hardness of Slate is 3-4 and that of Icelandite is 7. The types of Slate are Phyllite, Schist, and Slate whereas types of Icelandite are Intermediate volcanic rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Slate is light to dark brown while that of Icelandite is white. The specific heat capacity of Slate is 0.76 kJ/Kg K and that of Icelandite is 2.39 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Slate is heat resistant, impact resistant, pressure resistant, wear resistant whereas Icelandite is heat resistant, pressure resistant, scratch resistant, wear resistant.

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