Argillite

Conglomerate

Argillite and Conglomerate

Argillite

Conglomerate

Add ⊕

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

Conglomerate is a sedimentary rock which forms from rounded gravel and boulder sized clasts which are cemented together in a matrix

History

Origin

Italy

Discoverer

Unknown

Etymology

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

From Latin conglomeratus, to roll together, i.e. from com together + glomerare to gather into a ball, from glomus (genitive glomeris) a ball

Class

Sedimentary Rocks

Sub-Class

Durable Rock, Soft Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Opaque Rock

Texture

Clastic, Polished

Clastic

Color

Dark Grey to Black, Pink, Red, White

Beige, Black, Brown, Buff, Light to Dark Grey, Orange, Rust, White, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Dull

Shiny and Rounded

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration

Decorative Aggregates, Floor Tiles, Homes

Exterior Uses

As Building Stone, Garden Decoration, Office Buildings

As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Roof Tiles

Other Architectural Uses

Curbing, Whetstones

Curbing

Industry

Construction Industry

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

As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Roadstone

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Fire resistant, Used to manufracture paperweights and bookends

Cemetery Markers, In aquifers, Tombstones

Types

Metamorphic rock

Orthoconglomerate and Paraconglomerate

Features

Is one of the oldest rock

Clasts are smooth to touch, Is one of the oldest rock, Matrix variable

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.

Conglomerate forms where sediments consisting mainly of pebble and cobble-size clasts at least two millimeters in diameter starts accumulating.

Composition

Mineral Content

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

Clay, Sand, Silica, Silt

Compound Content

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

NaCl, CaO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion

Chemical Erosion, Coastal Erosion

Properties

Physical Properties

Hardness

2-32-3

1 7

👆🏻

Grain Size

Fine Grained

Coarse Grained

Fracture

Conchoidal to Uneven

Uneven

Streak

White to Grey

White

Porosity

Highly Porous

Luster

Waxy and Dull

Dull

Compressive Strength

-70.00 N/mm²

0.15 450

👆🏻

Cleavage

Slaty

Toughness

2.6

Specific Gravity

2.56-2.682.86-2.88

0 8.4

👆🏻

Transparency

Opaque

Density

2.54-2.66 g/cm³1.7-2.3 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

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

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

All about Argillite and Conglomerate Properties

Know all about Argillite and Conglomerate properties here. All properties of rocks are important as they define the type of rock and its application. Argillite and Conglomerate belong to Sedimentary Rocks.Texture of Argillite is Clastic, Polished whereas that of Conglomerate is Clastic. Argillite appears Rough and Dull and Conglomerate appears Shiny and Rounded. The luster of Argillite is waxy and dull while that of Conglomerate is dull. Argillite is available in dark grey to black, pink, red, white colors whereas Conglomerate is available in beige, black, brown, buff, light to dark grey, orange, rust, white, yellow colors. The commercial uses of Argillite are fire resistant, used to manufracture paperweights and bookends and that of Conglomerate are cemetery markers, in aquifers, tombstones.