Scoria

Obsidian

Scoria vs Obsidian

Scoria

Obsidian

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Definition

Origin

Discoverer

Etymology

Class

Sub-Class

Group

Other Categories

Texture

Color

Maintenance

Durability

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Uses

Interior Uses

Exterior Uses

Other Architectural Uses

Construction Industry

Medical Industry

Antiquity Uses

Commercial Uses

Types

Features

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Formation

Mineral Content

Compound Content

Metamorphism

Types of Metamorphism

Weathering

Types of Weathering

Erosion

Types of Erosion

Properties

Hardness

Grain Size

Fracture

Streak

Porosity

Luster

Compressive Strength

Cleavage

Toughness

Specific Gravity

Transparency

Density

Specific Heat Capacity

Resistance

Reserves

Asia

Africa

Europe

Others

North America

South America

Australia

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

Unknown

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

Igneous Rocks

Durable Rock, Medium Hardness Rock

Volcanic

Fine Grained Rock, Opaque Rock

Vesicular

Black, Brown, Dark Grey to Black, Red

Durable

✔✘

Glassy and Vesicular

Decorative Aggregates, Interior Decoration

Garden Decoration, Paving Stone

Curbing

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

Artifacts, Monuments, Sculpture

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

Basaltic Scoria and Andesitic Scoria

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

Absent

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

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

Ca, NaCl

✔✘

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

✔✘

Biological Weathering, Chemical Weathering, Mechanical Weathering

✔✘

Chemical Erosion, Coastal Erosion, Glacier Erosion

5-6

Fine Grained

Conchoidal

White

Highly Porous

Subvitreous to Dull

70.00 N/mm²

Perfect

2.1

-9999

Opaque

-9999 g/cm³

0.84 kJ/Kg K

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Afghanistan, Indonesia, Japan, Russia

Ethiopia, Kenya, Tanzania

Greece, Hungary, Iceland, Italy, Turkey

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

Argentina, Chile, Ecuador, Peru

New Zealand, Western Australia

Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth

Ethiopia

Obsius

From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius

Igneous Rocks

Durable Rock, Medium Hardness Rock

Volcanic

Opaque Rock

Glassy

Black, Blue, Brown, Green, Orange, Red, Tan, Yellow

Less

Durable

✔✘

Shiny

Decorative Aggregates, Interior Decoration

Garden Decoration

Arrowheads, Cutting Tool, Knives, Scrapers, Spear Points

Surgery

Artifacts, Jewellery

Creating Artwork, Mirror, Used in aquariums

Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian

Blocks negativity, Helps to protect against depression

Absent

When the lava is released from volcano, it undergoes a very rapid cooling which freezes the mechanisms of crystallization. The result is a volcanic glass with a uniform smooth texture.

Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

✔✘

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

✔✘

Biological Weathering, Chemical Weathering, Mechanical Weathering

✔✘

Chemical Erosion, Coastal Erosion, Glacier Erosion

5-5.5

Conchoidal

White

Very Less Porous

Vitreous

0.15 N/mm²

2.6-2.7

Translucent

2.6 g/cm³

0.92 kJ/Kg K

Heat Resistant, Impact Resistant

Afghanistan, Indonesia, Japan, Russia

Kenya

Greece, Hungary, Iceland, Italy, Turkey

Canada, Mexico, USA

Argentina, Chile, Ecuador, Peru

New Zealand

Scoria vs Obsidian 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 Scoria and Obsidian Reserves. Scoria is a dark-colored extrusive igneous rock with abundant round bubble-like cavities. Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. 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 Scoria vs Obsidian information and Scoria vs Obsidian characteristics in the upcoming sections.

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Scoria vs Obsidian 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. Scoria vs Obsidian characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Scoria and Properties of Obsidian. Learn more about Scoria vs Obsidian in the next section. The interior uses of Scoria include Decorative aggregates and Interior decoration whereas the interior uses of Obsidian include Decorative aggregates and Interior decoration. Due to some exceptional properties of Scoria and Obsidian, they have various applications in construction industry. The uses of Scoria in construction industry include Cement manufacture, Construction aggregate, For road aggregate, In landscaping and drainage works and that of Obsidian include Arrowheads, Cutting tool, Knives, Scrapers, Spear points.

More about Scoria and Obsidian

Here you can know more about Scoria and Obsidian. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Scoria and Obsidian consists of mineral content and compound content. The mineral content of Scoria includes Apatite, Biotite, Calcite, Feldspar, Hematite, Hornblade, Ilmenite, Magnetite, Olivine, Pyroxene, Quartz, Silica and mineral content of Obsidian includes . You can also check out the list of all Igneous Rocks. When we have to compare Scoria vs Obsidian, the texture, color and appearance plays an important role in determining the type of rock. Scoria is available in black, brown, dark grey to black, red colors whereas, Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. Appearance of Scoria is Glassy and Vesicular and that of Obsidian is Shiny. Properties of rock is another aspect for Scoria vs Obsidian. The hardness of Scoria is 5-6 and that of Obsidian is 5-5.5. The types of Scoria are Basaltic Scoria and Andesitic Scoria whereas types of Obsidian are Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Scoria and Obsidian is white. The specific heat capacity of Scoria is 0.84 kJ/Kg K and that of Obsidian is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Scoria is heat resistant, impact resistant, pressure resistant, wear resistant whereas Obsidian is heat resistant, impact resistant.