Scoria and Dolomite

Scoria

Dolomite

Dolomite and Scoria

Definition

Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities

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

History

Origin

Unknown

Southern Alps, France

Discoverer

Unknown

Dolomieu

Etymology

From late Middle English (denoting slag from molten metal), from Greek skōria refuse, from skōr dung

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

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Not Applicable

Other Categories

Fine Grained Rock, Opaque Rock

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

Texture

Vesicular

Earthy

Color

Black, Brown, Dark Grey to Black, Red

Black, Brown, Colourless, Green, Grey, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Glassy and Vesicular

Glassy or Pearly

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Homes, Interior Decoration

Exterior Uses

Garden Decoration, Paving Stone

Garden Decoration, Office Buildings

Other Architectural Uses

Curbing

Not Yet Used

Industry

Construction Industry

Cement Manufacture, Construction Aggregate, for Road Aggregate, In landscaping and drainage works

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

Medical Industry

Not Yet Used

Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts, Jewellery, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

As a traction material on snow-covered roads, Creating Artwork, High-temperature insulation, In gas barbecue grills

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

Types

Not Available

Boninite and Jasperoid

Features

Available in Lots of Colors and Patterns, Generally rough to touch, Surfaces are often shiny

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

Archaeological Significance

Monuments

Used

Famous Monuments

Data Not Available

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Used

Petroglyphs

Used

Figurines

Used

Fossils

Absent

Present

Formation

Scoria forms when magma containing huge amount of dissolved gas flows from a volcano during an eruption.

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

Composition

Mineral Content

Apatite, Biotite, Calcite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz, Silica

Clay Minerals, Pyrite, Quartz, Sulfides

Compound Content

Ca, NaCl

NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO

Transformation

Metamorphism

Yes

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Not Applicable

Erosion

Yes

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Not Applicable

Properties

Physical Properties

Hardness

5-6

3.5-4

Grain Size

Fine Grained

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

White

Porosity

Highly Porous

Less Porous

Luster

Subvitreous to Dull

Vitreous and Pearly

Compressive Strength

Not Available

140.00 N/mm²

Cleavage

Perfect

Toughness

2.1

Specific Gravity

Not Available

2.8-3

Transparency

Opaque

Transparent to Translucent

Density

Not Available

2.8-2.9 g/cm³

Thermal Properties

Specific Heat Capacity

Not Available

0.92 kJ/Kg K

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Afghanistan, Indonesia, Japan, Russia

China, India

Africa

Ethiopia, Kenya, Tanzania

Morocco, Namibia

Europe

Greece, Hungary, Iceland, Italy, Turkey

Austria, Italy, Romania, Spain, Switzerland

Others

Not Yet Found

Deposits in Western Continents

North America

Bahamas, Barbados, Canada, Costa Rica, Cuba, Jamaica, Mexico, USA

Mexico, USA

South America

Argentina, Chile, Ecuador, Peru

Brazil, Colombia

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

New South Wales, Queensland, Yorke Peninsula

Summary >>

<< Reserves

All about Scoria and Dolomite Properties

Know all about Scoria and Dolomite properties here. All properties of rocks are important as they define the type of rock and its application. Scoria belongs to Igneous Rocks while Dolomite belongs to Sedimentary Rocks.Texture of Scoria is Vesicular whereas that of Dolomite is Earthy. Scoria appears Glassy and Vesicular and Dolomite appears Glassy or Pearly. The luster of Scoria is subvitreous to dull while that of Dolomite is vitreous and pearly. Scoria is available in black, brown, dark grey to black, red colors whereas Dolomite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills and that 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).