×

Skarn
Skarn

Scoria
Scoria



ADD
Compare
X
Skarn
X
Scoria

Skarn vs Scoria

Add ⊕

Definition

Definition

Skarns are formed during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, and/or marine origin
Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities

History

Origin

USA, Australia
-

Discoverer

Tornebohm
Unknown

Etymology

From an old Swedish mining term originally used to describe a type of silicate gangue or waste rock.
From late Middle English (denoting slag from molten metal), from Greek skōria refuse, from skōr dung

Class

Metamorphic Rocks
Igneous Rocks

Sub-Class

Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock

Family

Group

-
Volcanic

Other Categories

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

Texture

Texture

Earthy, Mud-rich, Rough
Vesicular

Color

Black, Brown, Green, Grey, White
Black, Brown, Dark Grey to Black, Red

Maintenance

Less
More

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull
Glassy and Vesicular

Uses

Architecture

Interior Uses

Decorative Aggregates, Entryways, Interior Decoration
Decorative Aggregates, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing
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, Gold and Silver production, Manufacture of Magnesium and Dolomite Refractories
Cement Manufacture, Construction Aggregate, for Road Aggregate, In landscaping and drainage works

Medical Industry

-
-

Antiquity Uses

Artifacts, Monuments, Sculpture
Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

Creating Artwork, Gemstone, Jewelry, Metallurgical Flux, Source of Magnesia (MgO)
As a traction material on snow-covered roads, Creating Artwork, High-temperature insulation, In gas barbecue grills

Types

Types

Endoskarns
Basaltic Scoria and Andesitic Scoria

Features

Host Rock for Lead, Zinc and Copper Deposits
Available in Lots of Colors and Patterns, Generally rough to touch, Surfaces are often shiny

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Skarn is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.
Scoria forms when magma containing huge amount of dissolved gas flows from a volcano during an eruption.

Composition

Mineral Content

Calcite, Enstatite, Epidote, Garnet, Magnetite, Pyroxene, Titanite
Apatite, Biotite, Calcite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz, Silica

Compound Content

Au, CaO, Carbon Dioxide, Cu, Fe, MgO
Ca, NaCl

Transformation

Metamorphism

Types of Metamorphism

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

Weathering

Types of Weathering

-
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

-
Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

6.55-6
1 7
👆🏻

Grain Size

Fine Grained
Fine Grained

Fracture

Irregular
Conchoidal

Streak

Light to dark brown
White

Porosity

Less Porous
Highly Porous

Luster

Waxy and Dull
Subvitreous to Dull

Compressive Strength

70.00 N/mm270.00 N/mm2
0.15 450
👆🏻

Cleavage

Slaty
Perfect

Toughness

2.4
2.1

Specific Gravity

2.86-9999
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

2.8-2.9 g/cm3-9999 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K0.84 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

China, India, Russia, Saudi Arabia, South Korea, Sri Lanka
Afghanistan, Indonesia, Japan, Russia

Africa

South Africa, Western Africa
Ethiopia, Kenya, Tanzania

Europe

United Kingdom
Greece, Hungary, Iceland, Italy, Turkey

Others

-
-

Deposits in Western Continents

North America

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

South America

Brazil, Colombia, Paraguay
Argentina, Chile, Ecuador, Peru

Deposits in Oceania Continent

Australia

Central Australia, Western Australia
New Zealand, Western Australia

Skarn vs Scoria 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 Skarn and Scoria Reserves. Skarns are formed during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, and/or marine origin. Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities. 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 Skarn vs Scoria information and Skarn vs Scoria characteristics in the upcoming sections.

Skarn vs Scoria 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. Skarn vs Scoria characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Skarn and Properties of Scoria. Learn more about Skarn vs Scoria in the next section. The interior uses of Skarn include Decorative aggregates, Entryways and Interior decoration whereas the interior uses of Scoria include Decorative aggregates and Interior decoration. Due to some exceptional properties of Skarn and Scoria, they have various applications in construction industry. The uses of Skarn in construction industry include 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, Gold and silver production, Manufacture of magnesium and dolomite refractories and that of Scoria include Cement manufacture, Construction aggregate, For road aggregate, In landscaping and drainage works.

More about Skarn and Scoria

Here you can know more about Skarn and Scoria. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Skarn and Scoria consists of mineral content and compound content. The mineral content of Skarn includes Calcite, Enstatite, Epidote, Garnet, Magnetite, Pyroxene, Titanite and mineral content of Scoria includes Apatite, Biotite, Calcite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz, Silica. You can also check out the list of all Metamorphic Rocks. When we have to compare Skarn vs Scoria, the texture, color and appearance plays an important role in determining the type of rock. Skarn is available in black, brown, green, grey, white colors whereas, Scoria is available in black, brown, dark grey to black, red colors. Appearance of Skarn is Dull and that of Scoria is Glassy and Vesicular. Properties of rock is another aspect for Skarn vs Scoria. The hardness of Skarn is 6.5 and that of Scoria is 5-6. The types of Skarn are Endoskarns whereas types of Scoria are Basaltic Scoria and Andesitic Scoria. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Skarn is light to dark brown while that of Scoria is white. The specific heat capacity of Skarn is 0.92 kJ/Kg K and that of Scoria is 0.84 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Skarn is heat resistant whereas Scoria is heat resistant, impact resistant, pressure resistant, wear resistant.