Argillite

Evaporite

Argillite and Evaporite

Argillite

Evaporite

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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

A water-soluble mineral sediment resulting from concentration and crystallization by evaporation from an aqueous solution

History

Origin

USA

Discoverer

Unknown

Usiglio

Etymology

From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite

From a sediment left after the evaporation

Class

Sedimentary Rocks

Sub-Class

Durable Rock, Soft Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

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

Texture

Clastic, Polished

Earthy

Color

Dark Grey to Black, Pink, Red, White

Green, Grey, Silver, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Dull

Glassy, Vesicular and Foilated

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration

Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration

Exterior Uses

As Building Stone, Garden Decoration, Office Buildings

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

Other Architectural Uses

Curbing, Whetstones

Curbing

Industry

Construction Industry

Used for flooring, stair treads, borders and window sills.

As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories

Medical Industry

Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts

Other Uses

Commercial Uses

Fire resistant, Used to manufracture paperweights and bookends

Used in the manufacture of Ceramic Powder, Used in the preparation of Sulfuric Acid and Silicon Diborite

Types

Metamorphic rock

Sedimentary rock

Features

Is one of the oldest rock

Generally rough to touch, Splintery, Veined

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

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.

Evaporite is water-soluble mineral sediment which forms from concentration and crystallization by evaporation from an aqueous solution.

Composition

Mineral Content

Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz

Calcite, Cancrinite, Gypsum, Kyanite, Magnetite

Compound Content

Iron(III) Oxide, Potassium Oxide, MgO, Silicon Dioxide

CaMg(CO₃)₂, CaO, Calcium Sulfate, KCl, MgO, NaCl

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

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

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion

Properties

Physical Properties

Hardness

2-32-3

1 7

👆🏻

Grain Size

Fine Grained

Medium to Fine Coarse Grained

Fracture

Conchoidal to Uneven

Conchoidal

Streak

White to Grey

White

Porosity

Highly Porous

Less Porous

Luster

Waxy and Dull

Subvitreous to Dull

Compressive Strength

-225.00 N/mm²

0.15 450

👆🏻

Cleavage

Slaty

Perfect

Toughness

2.6

Specific Gravity

2.56-2.682.86-2.99

0 8.4

👆🏻

Transparency

Opaque

Translucent

Density

2.54-2.66 g/cm³2.8-2.9 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.87 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant

Heat Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

Bangladesh, China, India, Russia

Africa

Ethiopia, Kenya, Morocco, South Africa, Tanzania

Europe

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland

United Kingdom

Others

Deposits in Western Continents

North America

USA

South America

Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela

Colombia, Paraguay

Deposits in Oceania Continent

Australia

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

Central Australia, Western Australia

All about Argillite and Evaporite Properties

Know all about Argillite and Evaporite properties here. All properties of rocks are important as they define the type of rock and its application. Argillite and Evaporite belong to Sedimentary Rocks.Texture of Argillite is Clastic, Polished whereas that of Evaporite is Earthy. Argillite appears Rough and Dull and Evaporite appears Glassy, Vesicular and Foilated. The luster of Argillite is waxy and dull while that of Evaporite is subvitreous to dull. Argillite is available in dark grey to black, pink, red, white colors whereas Evaporite is available in green, grey, silver, white colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Evaporite are used in the manufacture of ceramic powder, used in the preparation of sulfuric acid and silicon diborite.