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Diabase
Diabase

Schist
Schist



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Diabase vs Schist

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Definition

Definition

Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar
Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation

History

Origin

Germany
-

Discoverer

Christian Leopold von Buch
Unknown

Etymology

From Greek di + base
From French schiste, Greek skhistos i.e. split

Class

Igneous Rocks
Metamorphic Rocks

Sub-Class

Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock

Family

Group

Volcanic
-

Other Categories

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

Texture

Texture

Aphanitic, Granular
Foliated, Platy

Color

Dark Grey to Black
Black, Blue, Brown, Dark Brown, Green, Grey, Silver

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Vesicular
Layered and Shiny

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Homes, Interior Decoration, Kitchens
Decorative Aggregates, Floor Tiles, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing
-

Industry

Construction Industry

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate
As Dimension Stone, Building houses or walls, Cement Manufacture, for Road Aggregate, Roadstone

Medical Industry

-
-

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines
Artifacts

Other Uses

Commercial Uses

An Oil and Gas Reservoir, Cemetery Markers, Commemorative Tablets, Laboratory bench tops, Jewelry, Sea Defence, Tombstones
Used in aquariums, Writing Slates

Types

Types

Dolerite
Mica Schists, Calc-Silicate Schists, Graphite Schists, Blueschists, Whiteschists, Greenschists, Hornblende Schist, Talc Schist, Chlorite Schist, Garnet Schist, Glaucophane schist.

Features

Smooth to touch
Easily splits into thin plates, Smooth to touch

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.
Schist formed by dynamic metamorphism at high temperatures and pressures that aligns the grains of mica, hornblende and other elongated minerals into thin layers.

Composition

Mineral Content

Augite, Chlorite, Olivine, Plagioclase, Pyroxene, Pyrrhotite, Serpentine
Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc

Compound Content

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

Transformation

Metamorphism

Types of Metamorphism

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

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

73.5-4
1 7
👆🏻

Grain Size

Fine to Medium Grained
Medium to Fine Coarse Grained

Fracture

Conchoidal
Conchoidal

Streak

Black
White

Porosity

Highly Porous
Highly Porous

Luster

-
Shiny

Compressive Strength

225.00 N/mm2150.00 N/mm2
0.15 450
👆🏻

Cleavage

-
Slaty

Toughness

1.6
1.5

Specific Gravity

2.86-2.872.5-2.9
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

2.7-3.3 g/cm32.8-2.9 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.70 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

India
Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam

Africa

South Africa, Tanzania
Egypt, Ethiopia, Morocco, Nigeria, South Africa

Europe

Germany, Greece, Italy, Scotland, Turkey
Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland

Others

Antarctica, Greenland
-

Deposits in Western Continents

North America

Canada, USA
Canada, Costa Rica, Cuba, Mexico, Panama, USA

South America

Argentina, Brazil, Colombia, Venezuela
Brazil, Colombia, Guyana

Deposits in Oceania Continent

Australia

Central Australia, New Zealand, Queensland, Western Australia
New South Wales, New Zealand, Queensland

Diabase vs Schist 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 Schist Reserves. Diabase is a fine-grained igneous rock which is composed mostly of pyroxene and feldspar. Schist is a medium grade metamorphic rock with medium to large, flat, sheet like grains in a preferred orientation. 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 Schist information and Diabase vs Schist characteristics in the upcoming sections.

Diabase vs Schist 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 Schist characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Diabase and Properties of Schist. Learn more about Diabase vs Schist in the next section. The interior uses of Diabase include Countertops, Decorative aggregates, Homes, Interior decoration and Kitchens whereas the interior uses of Schist include Decorative aggregates, Floor tiles and Interior decoration. Due to some exceptional properties of Diabase and Schist, 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 Schist include As dimension stone, Building houses or walls, Cement manufacture, For road aggregate, Roadstone.

More about Diabase and Schist

Here you can know more about Diabase and Schist. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Diabase and Schist consists of mineral content and compound content. The mineral content of Diabase includes Augite, Chlorite, Olivine, Plagioclase, Pyroxene, Pyrrhotite, Serpentine and mineral content of Schist includes Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc. You can also check out the list of all Igneous Rocks. When we have to compare Diabase vs Schist, 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, Schist is available in black, blue, brown, dark brown, green, grey, silver colors. Appearance of Diabase is Vesicular and that of Schist is Layered and Shiny. Properties of rock is another aspect for Diabase vs Schist. The hardness of Diabase is 7 and that of Schist is 3.5-4. The types of Diabase are Dolerite whereas types of Schist are Mica Schists, Calc-Silicate Schists, Graphite Schists, Blueschists, Whiteschists, Greenschists, Hornblende Schist, Talc Schist, Chlorite Schist, Garnet Schist, Glaucophane schist.. 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 Schist is white. The specific heat capacity of Diabase is 0.84 kJ/Kg K and that of Schist is 0.70 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 Schist is impact resistant, pressure resistant, water resistant.