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Hornfels
Hornfels

Eclogite
Eclogite



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Hornfels vs Eclogite

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1 Definition
1.1 Definition
Hornfels is a metamorphic rock formed by the contact between mudstone or other clay rich rock, and a hot igneous body, and represents a heat altered equivalent of the original rock
Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature
1.2 History
1.2.1 Origin
New Zealand
Unknown
1.2.2 Discoverer
Unknown
René Just Haüy
1.3 Etymology
From German which means hornstone
From French, Greek eklogē selection with reference to the selective content of the rock + -ite1
1.4 Class
Metamorphic Rocks
Metamorphic Rocks
1.4.1 Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Not Applicable
Not Applicable
1.6 Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
2 Texture
2.1 Texture
Granular, Platy
Earthy
2.2 Color
Brown, Dark Greenish - Grey, Green, Reddish Brown
Black, Brown, Colourless, Green, Grey, Pink, White
2.3 Maintenance
Less
Less
2.4 Durability
Durable
Durable
2.4.1 Water Resistant
81% Metamorphic Rocks Rocks have it !
81% Metamorphic Rocks Rocks have it !
2.4.2 Scratch Resistant
65% Metamorphic Rocks Rocks have it !
65% Metamorphic Rocks Rocks have it !
2.4.3 Stain Resistant
42% Metamorphic Rocks Rocks have it !
42% Metamorphic Rocks Rocks have it !
2.4.4 Wind Resistant
19% Metamorphic Rocks Rocks have it !
19% Metamorphic Rocks Rocks have it !
2.4.5 Acid Resistant
15% Metamorphic Rocks Rocks have it !
15% Metamorphic Rocks Rocks have it !
2.5 Appearance
Dull
Dull, Banded and Foilated
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Decorative Aggregates, Flooring, Homes, Interior Decoration
Decorative Aggregates, Interior Decoration
3.1.2 Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
Paving Stone, Garden Decoration
3.1.3 Other Architectural Uses
Curbing
Curbing
3.2 Industry
3.2.1 Construction Industry
for Road Aggregate, Roadstone
Not Yet Used
3.2.2 Medical Industry
Not Yet Used
In Chemical and Pharmaceutical Industry, Medicines and Cosmetics
3.3 Antiquity Uses
Artifacts, Monuments
Artifacts
3.4 Other Uses
3.4.1 Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork
Creating Artwork, Gemstone
4 Types
4.1 Types
Biotite hornfels
Not Available
4.2 Features
Smooth to touch
Available in Lots of Colors and Patterns, Generally rough to touch, Is one of the oldest rock
4.3 Archaeological Significance
4.3.1 Monuments
Used
Not Yet Used
4.3.2 Famous Monuments
Data Not Available
Not Applicable
4.3.3 Sculpture
Not Yet Used
Not Yet Used
4.3.4 Famous Sculptures
Not Applicable
Not Applicable
4.3.5 Pictographs
Used
Used
4.3.6 Petroglyphs
Used
Used
4.3.7 Figurines
Not Yet Used
Not Yet Used
4.4 Fossils
Absent
Absent
5 Formation
5.1 Formation
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Hornfels is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.
Eclogite forms from high-pressure metamorphism of mafic igneous rocks mainly, basalt or gabbro as it plunges into the mantle in a subduction zone.
5.2 Composition
5.2.1 Mineral Content
Andalusite
Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite
5.2.2 Compound Content
Fe, Mg
Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, Magnesium Carbonate, MgO, Sodium Oxide, Potassium, Sodium
5.3 Transformation
5.3.1 Metamorphism
50% Metamorphic Rocks Rocks have it !
50% Metamorphic Rocks Rocks have it !
5.3.2 Types of Metamorphism
Not Applicable
Not Applicable
5.3.3 Weathering
65% Metamorphic Rocks Rocks have it !
65% Metamorphic Rocks Rocks have it !
5.3.4 Types of Weathering
Biological Weathering
Mechanical Weathering
5.3.5 Erosion
77% Metamorphic Rocks Rocks have it !
77% Metamorphic Rocks Rocks have it !
5.3.6 Types of Erosion
Chemical Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Sea Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
2-3
3.5-4
6.1.2 Grain Size
Fine Grained
Fine Grained
6.1.3 Fracture
Conchoidal
Not Available
6.1.4 Streak
Unknown
White
6.1.5 Porosity
Highly Porous
Less Porous
6.1.6 Luster
Shiny
Subvitreous to Dull
6.1.7 Compressive Strength
Flint
5.80 N/mm2
Rank: 31 (Overall)
Not Available
Rank: N/A (Overall)
Obsidian
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6.1.8 Cleavage
Perfect
Perfect
6.1.9 Toughness
Not Yet Found
Not Available
6.1.10 Specific Gravity
3.4-3.9
2.86-2.87
6.1.11 Transparency
Opaque
Opaque
6.1.12 Density
0.25-0.30 g/cm3
3.2-3.6 g/cm3
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
Banded iron for..
0.84 kJ/Kg K
Rank: 15 (Overall)
Not Available
Rank: N/A (Overall)
Granulite
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6.2.2 Resistance
Heat Resistant, Impact Resistant, Pressure Resistant
Heat Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
India, Kazakhstan, Kuwait, Russia, South Korea, Thailand, Turkey
7.1.2 Africa
Cameroon, East Africa, Tanzania, Western Africa
Ethiopia, Morocco, South Africa
7.1.3 Europe
United Kingdom
France, Germany, Italy, Norway, Scotland
7.1.4 Others
Not Yet Found
Greenland
7.2 Deposits in Western Continents
7.2.1 North America
Canada, USA
Canada, Costa Rica, Panama, USA
7.2.2 South America
Bolivia, Brazil, Colombia, Ecuador
Argentina, Brazil, Colombia, Ecuador
7.3 Deposits in Oceania Continent
7.3.1 Australia
New South Wales, New Zealand, Queensland, Western Australia
Central Australia, New Zealand, Queensland

Hornfels vs Eclogite 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 Hornfels and Eclogite Reserves. Hornfels is a metamorphic rock formed by the contact between mudstone or other clay rich rock, and a hot igneous body, and represents a heat altered equivalent of the original rock. Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature. 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 Hornfels vs Eclogite information and Hornfels vs Eclogite characteristics in the upcoming sections.

Hornfels vs Eclogite 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. Hornfels vs Eclogite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Hornfels and Properties of Eclogite. Learn more about Hornfels vs Eclogite in the next section. The interior uses of Hornfels include Decorative aggregates, Flooring, Homes and Interior decoration whereas the interior uses of Eclogite include Decorative aggregates and Interior decoration. Due to some exceptional properties of Hornfels and Eclogite, they have various applications in construction industry. The uses of Hornfels in construction industry include For road aggregate, Roadstone and that of Eclogite include Not yet used.

More about Hornfels and Eclogite

Here you can know more about Hornfels and Eclogite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Hornfels and Eclogite consists of mineral content and compound content. The mineral content of Hornfels includes Andalusite and mineral content of Eclogite includes Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite. You can also check out the list of all Metamorphic Rocks. When we have to compare Hornfels vs Eclogite, the texture, color and appearance plays an important role in determining the type of rock. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas, Eclogite is available in black, brown, colourless, green, grey, pink, white colors. Appearance of Hornfels is Dull and that of Eclogite is Dull, Banded and Foilated. Properties of rock is another aspect for Hornfels vs Eclogite. The hardness of Hornfels is 2-3 and that of Eclogite is 3.5-4. The types of Hornfels are Biotite hornfels whereas types of Eclogite are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Hornfels is unknown while that of Eclogite is white. The specific heat capacity of Hornfels is 0.84 kJ/Kg K and that of Eclogite is Not Available. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Hornfels is heat resistant, impact resistant, pressure resistant whereas Eclogite is heat resistant.