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Diabase
Diabase

Pseudotachylite
Pseudotachylite



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Pseudotachylite

Diabase vs Pseudotachylite

Definition

Definition

Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.

History

Origin

Germany
USA

Discoverer

Christian Leopold von Buch
Unknown

Etymology

From Greek di + base
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.

Class

Igneous Rocks
Metamorphic Rocks

Sub-Class

Durable Rock, Hard Rock
Durable Rock, Hard Rock

Family

Group

Volcanic
-

Other Categories

Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock

Texture

Texture

Aphanitic, Granular
Quench

Color

Dark Grey to Black
Black, Brown, Green, Grey, Pink, White

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Vesicular
Dull and Soft

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Homes, Interior Decoration, Kitchens
Decorative Aggregates, Entryways, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings
As Building Stone, As Facing Stone, Garden Decoration

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement

Medical Industry

-
-

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Monuments

Other Uses

Commercial Uses

An Oil and Gas Reservoir, Cemetery Markers, Commemorative Tablets, Laboratory bench tops, Jewelry, Sea Defence, Tombstones
Creating Artwork, Gemstone

Types

Types

Dolerite
Cataclastic rock

Features

Smooth to touch
Host Rock for Lead

Archaeological Significance

Monuments

-
-

Famous Monuments

Stonehenge in English county of Wiltshire
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

Diabase forms when molten igneous rock is squeezed up into a vertical crack in other rocks, the crack is usually forced apart and the molten rock cools in the space to form a tabular igneous intrusion cutting across the surrounding rocks and is known as a dike.
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.

Composition

Mineral Content

Augite, Chlorite, Olivine, Plagioclase, Pyroxene, Pyrrhotite, Serpentine
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides

Compound Content

Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur

Transformation

Metamorphism

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering
-

Erosion

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion
-

Properties

Physical Properties

Hardness

77
1 7
👆🏻

Grain Size

Fine to Medium Grained
Very fine-grained

Fracture

Conchoidal
Uneven

Streak

Black
Light to dark brown

Porosity

Highly Porous
Less Porous

Luster

-
Vitreous

Compressive Strength

225.00 N/mm260.00 N/mm2
0.15 450
👆🏻

Cleavage

-
-

Toughness

1.6
-

Specific Gravity

2.86-2.872.46-2.86
0 8.4
👆🏻

Transparency

Opaque
Transparent to Translucent

Density

2.7-3.3 g/cm32.7-2.9 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.92 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

India
South Korea

Africa

South Africa, Tanzania
Western Africa

Europe

Germany, Greece, Italy, Scotland, Turkey
Great Britain, Switzerland

Others

Antarctica, Greenland
-

Deposits in Western Continents

North America

Canada, USA
-

South America

Argentina, Brazil, Colombia, Venezuela
-

Deposits in Oceania Continent

Australia

Central Australia, New Zealand, Queensland, Western Australia
Central Australia, Western Australia

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

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

More about Diabase and Pseudotachylite

Here you can know more about Diabase and Pseudotachylite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Diabase and Pseudotachylite consists of mineral content and compound content. The mineral content of Diabase includes Augite, Chlorite, Olivine, Plagioclase, Pyroxene, Pyrrhotite, Serpentine and mineral content of Pseudotachylite includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides. You can also check out the list of all Igneous Rocks. When we have to compare Diabase vs Pseudotachylite, the texture, color and appearance plays an important role in determining the type of rock. Diabase is available in dark grey to black colors whereas, Pseudotachylite is available in black, brown, green, grey, pink, white colors. Appearance of Diabase is Vesicular and that of Pseudotachylite is Dull and Soft. Properties of rock is another aspect for Diabase vs Pseudotachylite. Hardness of Diabase and Pseudotachylite is 7. The types of Diabase are Dolerite whereas types of Pseudotachylite are Cataclastic rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Diabase is black while that of Pseudotachylite is light to dark brown. The specific heat capacity of Diabase is 0.84 kJ/Kg K and that of Pseudotachylite is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Diabase is heat resistant, impact resistant, pressure resistant, wear resistant whereas Pseudotachylite is heat resistant.