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Pseudotachylite
Pseudotachylite

Hornfels
Hornfels



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Pseudotachylite vs Hornfels

1 Definition
1.1 Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.
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
1.2 History
1.2.1 Origin
USA
New Zealand
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.
From German which means hornstone
1.4 Class
Metamorphic Rocks
Metamorphic Rocks
1.4.1 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft 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
Quench
Granular, Platy
2.2 Color
Black, Brown, Colourless, Green, Grey, Pink, White
Brown, Dark Greenish - Grey, Green, Reddish Brown
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 and Soft
Dull
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Decorative Aggregates, Entryways, Interior Decoration
Decorative Aggregates, Flooring, Homes, Interior Decoration
3.1.2 Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
3.1.3 Other Architectural Uses
Curbing
Curbing
3.2 Industry
3.2.1 Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement
for Road Aggregate, Roadstone
3.2.2 Medical Industry
Not Yet Used
Not Yet Used
3.3 Antiquity Uses
Artifacts, Monuments
Artifacts, Monuments
3.4 Other Uses
3.4.1 Commercial Uses
Creating Artwork, Gemstone
Cemetery Markers, Commemorative Tablets, Creating Artwork
4 Types
4.1 Types
Not Available
Biotite hornfels
4.2 Features
Host Rock for Lead
Smooth to touch
4.3 Archaeological Significance
4.3.1 Monuments
Used
Used
4.3.2 Famous Monuments
Data Not Available
Data Not Available
4.3.3 Sculpture
Not Yet Used
Not Yet Used
4.3.4 Famous Sculptures
Not Applicable
Not Applicable
4.3.5 Pictographs
Not Used
Used
4.3.6 Petroglyphs
Not 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. Pseudotachylite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.
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.
5.2 Composition
5.2.1 Mineral Content
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides
Andalusite
5.2.2 Compound Content
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur
Fe, Mg
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
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism
Not Applicable
5.3.3 Weathering
65% Metamorphic Rocks Rocks have it !
65% Metamorphic Rocks Rocks have it !
5.3.4 Types of Weathering
Not Applicable
Biological Weathering
5.3.5 Erosion
77% Metamorphic Rocks Rocks have it !
77% Metamorphic Rocks Rocks have it !
5.3.6 Types of Erosion
Not Applicable
Chemical Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
7
2-3
6.1.2 Grain Size
Very fine-grained
Fine Grained
6.1.3 Fracture
Uneven
Conchoidal
6.1.4 Streak
Light to dark brown
Unknown
6.1.5 Porosity
Less Porous
Highly Porous
6.1.6 Luster
Vitreous
Shiny
6.1.7 Compressive Strength
Flint
60.00 N/mm2
Rank: 25 (Overall)
5.80 N/mm2
Rank: 31 (Overall)
Obsidian
ADD ⊕
6.1.8 Cleavage
Irregular
Perfect
6.1.9 Toughness
Not Available
Not Yet Found
6.1.10 Specific Gravity
2.46-2.86
3.4-3.9
6.1.11 Transparency
Transparent to Translucent
Opaque
6.1.12 Density
2.7-2.9 g/cm3
0.25-0.30 g/cm3
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
Banded iron for..
0.92 kJ/Kg K
Rank: 10 (Overall)
0.84 kJ/Kg K
Rank: 15 (Overall)
Granulite
ADD ⊕
6.2.2 Resistance
Heat Resistant
Heat Resistant, Impact Resistant, Pressure Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
South Korea
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
7.1.2 Africa
Western Africa
Cameroon, East Africa, Tanzania, Western Africa
7.1.3 Europe
Great Britain, Switzerland
United Kingdom
7.1.4 Others
Not Yet Found
Not Yet Found
7.2 Deposits in Western Continents
7.2.1 North America
Not Yet Found
Canada, USA
7.2.2 South America
Not Yet Found
Bolivia, Brazil, Colombia, Ecuador
7.3 Deposits in Oceania Continent
7.3.1 Australia
Central Australia, Western Australia
New South Wales, New Zealand, Queensland, Western Australia

Pseudotachylite vs Hornfels 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 Pseudotachylite and Hornfels Reserves. Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. 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. 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 Pseudotachylite vs Hornfels information and Pseudotachylite vs Hornfels characteristics in the upcoming sections.

Pseudotachylite vs Hornfels 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. Pseudotachylite vs Hornfels characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Pseudotachylite and Properties of Hornfels. Learn more about Pseudotachylite vs Hornfels in the next section. The interior uses of Pseudotachylite include Decorative aggregates, Entryways and Interior decoration whereas the interior uses of Hornfels include Decorative aggregates, Flooring, Homes and Interior decoration. Due to some exceptional properties of Pseudotachylite and Hornfels, they have various applications in construction industry. The uses of Pseudotachylite in construction industry include As dimension stone, Cement manufacture, For road aggregate, Making natural cement and that of Hornfels include For road aggregate, Roadstone.

More about Pseudotachylite and Hornfels

Here you can know more about Pseudotachylite and Hornfels. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Pseudotachylite and Hornfels consists of mineral content and compound content. The mineral content of Pseudotachylite includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides and mineral content of Hornfels includes Andalusite. You can also check out the list of all Metamorphic Rocks. When we have to compare Pseudotachylite vs Hornfels, the texture, color and appearance plays an important role in determining the type of rock. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas, Hornfels is available in brown, dark greenish - grey, green, reddish brown colors. Appearance of Pseudotachylite is Dull and Soft and that of Hornfels is Dull. Properties of rock is another aspect for Pseudotachylite vs Hornfels. The hardness of Pseudotachylite is 7 and that of Hornfels is 2-3. The types of Pseudotachylite are Not Available whereas types of Hornfels are Biotite hornfels. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Pseudotachylite is light to dark brown while that of Hornfels is unknown. The specific heat capacity of Pseudotachylite is 0.92 kJ/Kg K and that of Hornfels 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.Pseudotachylite is heat resistant whereas Hornfels is heat resistant, impact resistant, pressure resistant.