Dolomite

Claystone

Dolomite and Claystone

Dolomite

Claystone

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Definition

Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight

Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay

History

Origin

Southern Alps, France

Discoverer

Dolomieu

Unknown

Etymology

From French, from the name of Dolomieu (1750–1801), the French geologist who discovered the rock

From English clay and stone as the rock contains more amount of clay

Class

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

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

Fine Grained Rock, Opaque Rock

Texture

Earthy

Clastic

Color

Black, Brown, Green, Grey, Pink, White

Black, Blue, Brown, Green, Grey, Orange, Red, White, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy or Pearly

Rough and Dull

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration

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

Exterior Uses

Garden Decoration, Office Buildings

As Facing Stone, Roof Tiles

Other Architectural Uses

Curbing

Industry

Construction Industry

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, Production of Glass and Ceramics, Serves as an Oil and Gas Reservoir rock

As a Sintering Agent in Steel Industry to process Iron Ore, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar

Medical Industry

Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts, Jewellery, Monuments, Sculpture, Small Figurines

Artifacts, Sculpture, Small Figurines

Other Uses

Commercial Uses

An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)

Pottery

Types

Boninite and Jasperoid

Claystone

Features

Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits

Available in Lots of Colors and Patterns, Smooth to touch, Very fine grained rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

Formation

Dolomite rocks are originally deposited as calcite or aragonite rich limestone, but during diagenesis process, the calcite or aragonite is transformed into dolomite.

Claystone is generally quite soft, but can be hard and brittle. It forms due to weathering of mudstone.

Composition

Mineral Content

Clay Minerals, Pyrite, Quartz, Sulfides

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

Compound Content

NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO

Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, MgO, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Coastal Erosion, Water Erosion

Properties

Physical Properties

Hardness

3.5-43.5-4

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Fine Grained

Fracture

Conchoidal

Streak

White

Porosity

Less Porous

Very Less Porous

Luster

Vitreous and Pearly

Dull

Compressive Strength

140.00 N/mm²40.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

2.6

Specific Gravity

2.8-30

0 8.4

👆🏻

Transparency

Transparent to Translucent

Opaque

Density

2.8-2.9 g/cm³2-2.9 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India

Bangladesh, China, India, Russia

Africa

Morocco, Namibia

Ethiopia, Kenya, Morocco, South Africa, Tanzania

Europe

Austria, Italy, Romania, Spain, Switzerland

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

Others

Deposits in Western Continents

North America

Mexico, USA

Canada, Panama, USA

South America

Brazil, Colombia

Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela

Deposits in Oceania Continent

Australia

New South Wales, Queensland, Yorke Peninsula

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

All about Dolomite and Claystone Properties

Know all about Dolomite and Claystone properties here. All properties of rocks are important as they define the type of rock and its application. Dolomite and Claystone belong to Sedimentary Rocks.Texture of Dolomite is Earthy whereas that of Claystone is Clastic. Dolomite appears Glassy or Pearly and Claystone appears Rough and Dull. The luster of Dolomite is vitreous and pearly while that of Claystone is dull. Dolomite is available in black, brown, green, grey, pink, white colors whereas Claystone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Dolomite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo) and that of Claystone are pottery.