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Argillite
Argillite

Greywacke
Greywacke



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Argillite
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Greywacke

Argillite vs Greywacke

Definition

Definition

Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate
Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay

History

Origin

Unknown
Unknown

Discoverer

Unknown
Unknown

Etymology

From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite
From German Grauwacke, from grau grey + wacke

Class

Sedimentary Rocks
Sedimentary Rocks

Sub-Class

Durable Rock, Soft Rock
Durable Rock, Hard Rock

Family

Group

Not Applicable
Not Applicable

Other Categories

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

Texture

Texture

Clastic, Polished
Clastic

Color

Dark Grey to Black, Pink, Red, White
Beige, Black, Brown, Cream, Dark Brown, Green, Grey, Light Green, Light to Dark Grey, Pink, Red, White, Yellow

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Rough and Dull
Dull

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration
Decorative Aggregates, Floor Tiles, Flooring, Homes, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing, Whetstones
Curbing, Whetstones

Industry

Construction Industry

Used for flooring, stair treads, borders and window sills.
Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar

Medical Industry

Not Available
Not Available

Antiquity Uses

Artifacts, Monuments, Sculpture
Artifacts, Sculpture, Small Figurines

Other Uses

Commercial Uses

Fire resistant, Used to manufracture paperweights and bookends
As armour rock for sea walls, Petroleum reservoirs, Sea Defence, Tombstones

Types

Types

Not Available
Not Available

Features

Is one of the oldest rock
Available in Lots of Colors and Patterns, Generally rough to touch, Non-vesicular, Veined

Archaeological Significance

Monuments

Used
Not Yet Used

Famous Monuments

Not Available
Not Applicable

Sculpture

Used
Used

Famous Sculptures

Not Available
Not Available

Pictographs

Used
Not Used

Petroglyphs

Used
Not Used

Figurines

Used
Used

Fossils

Present
Present

Formation

Formation

An argillite is a fine-grained sedimentary rock mainly composed of clay particles which forms from lithified muds which contain variable amounts of silt-sized particles.
Graywacke rock is a type of sedimentary rock, which is also known as immature sandstone, which is indurated, dark grey and consisting of poorly sorted angular to sub-angular, sand-sized grains.

Composition

Mineral Content

Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz
Augite, Biotite, Calcite, Chlorite, Clay, Clay Minerals, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz

Compound Content

Iron(III) Oxide, Potassium Oxide, MgO, Silicon Dioxide
Aluminium Oxide, NaCl, CaO, Chromium(III) Oxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

Transformation

Metamorphism

Types of Metamorphism

Not Applicable
Not Applicable

Weathering

Types of Weathering

Biological Weathering
Biological Weathering, Chemical Weathering

Erosion

Types of Erosion

Chemical Erosion
Coastal Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

2-36-7
1 7
👆🏻

Grain Size

Fine Grained
Angular and Fine

Fracture

Conchoidal to Uneven
Conchoidal

Streak

White to Grey
White

Porosity

Highly Porous
Highly Porous

Luster

Waxy and Dull
Dull

Compressive Strength

NANA
0.15 450
👆🏻

Cleavage

Slaty
Perfect

Toughness

2.6
2.6

Specific Gravity

2.56-2.682.2-2.8
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

2.54-2.66 g/cm32.6-2.61 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.87 kJ/Kg KNA
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

Bangladesh, China, India, Russia
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan

Africa

Ethiopia, Kenya, Morocco, South Africa, Tanzania
Namibia, Nigeria, South Africa

Europe

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom

Others

Not Available
Greenland

Deposits in Western Continents

North America

USA
Canada, USA

South America

Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
Brazil

Deposits in Oceania Continent

Australia

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

Argillite vs Greywacke 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 Argillite and Greywacke Reserves. Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate. Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay. 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 Argillite vs Greywacke information and Argillite vs Greywacke characteristics in the upcoming sections.

Argillite vs Greywacke 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. Argillite vs Greywacke characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Argillite and Properties of Greywacke. Learn more about Argillite vs Greywacke in the next section. The interior uses of Argillite include Decorative aggregates, Homes and Interior decoration whereas the interior uses of Greywacke include Decorative aggregates, Floor tiles, Flooring, Homes and Interior decoration. Due to some exceptional properties of Argillite and Greywacke, they have various applications in construction industry. The uses of Argillite in construction industry include Used for flooring, stair treads, borders and window sills. and that of Greywacke include Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate, Raw material for the manufacture of mortar.

More about Argillite and Greywacke

Here you can know more about Argillite and Greywacke. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Argillite and Greywacke consists of mineral content and compound content. The mineral content of Argillite includes Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz and mineral content of Greywacke includes Augite, Biotite, Calcite, Chlorite, Clay, Clay Minerals, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz. You can also check out the list of all Sedimentary Rocks. When we have to compare Argillite vs Greywacke, the texture, color and appearance plays an important role in determining the type of rock. Argillite is available in dark grey to black, pink, red, white colors whereas, Greywacke is available in beige, black, brown, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. Appearance of Argillite is Rough and Dull and that of Greywacke is Dull. Properties of rock is another aspect for Argillite vs Greywacke. The hardness of Argillite is 2-3 and that of Greywacke is 6-7. The types of Argillite are Not Available whereas types of Greywacke are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Argillite is white to grey while that of Greywacke is white. The specific heat capacity of Argillite is 0.87 kJ/Kg K and that of Greywacke is Not Available. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Argillite is heat resistant, impact resistant whereas Greywacke is heat resistant, impact resistant, pressure resistant.