Andesite

Scoria

Andesite and Scoria

Andesite

Scoria

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1 Definition

1.1 Definition

Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava

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

1.2 History

1.2.1 Origin

North America

Unknown

1.2.2 Discoverer

Unknown

1.3 Etymology

From Andes mountains, where it is found in abundance

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

1.4 Class

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Volcanic

1.6 Other Categories

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Aphanitic to Porphyritic

Vesicular

2.2 Color

Bluish - Grey, Grey, Pink, Yellow

Black, Brown, Dark Grey to Black, Red

2.3 Maintenance

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Dull and Soft

Glassy and Vesicular

3 Uses

3.1 Architecture

3.1.1 Interior Uses

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

Decorative Aggregates, Interior Decoration

3.1.2 Exterior Uses

Office Buildings, Roof Tiles

Garden Decoration, Paving Stone

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

Cobblestones, Construction Aggregate, for Road Aggregate

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

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Monuments, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

Commemorative Tablets, Creating Artwork

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

4 Types

4.1 Types

Icelandite

Not Available

4.2 Features

Generally rough to touch, High silica content, Is one of the oldest rock

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

4.3 Archaeological Significance

4.3.1 Monuments

Used

4.3.2 Famous Monuments

Middle of the Earth in Ecuador

Data Not Available

4.3.3 Sculpture

Used

4.3.4 Famous Sculptures

Data Not Available

4.3.5 Pictographs

Not Used

Used

4.3.6 Petroglyphs

Not Used

Used

4.3.7 Figurines

Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

Andesite is a fine-grained igneous rock that forms when the magma is erupted onto the surface and is crystallized quickly.

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

5.2 Composition

5.2.1 Mineral Content

Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Zircon

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

5.2.2 Compound Content

Silicon Dioxide

Ca, NaCl

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

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

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

75-6

1 7

6.1.2 Grain Size

Very fine-grained

Fine Grained

6.1.3 Fracture

Uneven

Conchoidal

6.1.4 Streak

White

6.1.5 Porosity

Less Porous

Highly Porous

6.1.6 Luster

Vitreous

Subvitreous to Dull

6.1.7 Compressive Strength

225.00 N/mm²NA

0.15 450

6.1.8 Cleavage

Not Available

Perfect

6.1.9 Toughness

1.1

2.1

6.1.10 Specific Gravity

2.5-2.8Not Available

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

2.11-2.36 g/cm³Not Available

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

2.39 kJ/Kg KNA

0.14 3.2

6.2.2 Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

India, Indonesia, Japan, Nepal, South Korea

Afghanistan, Indonesia, Japan, Russia

7.1.2 Africa

Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania

Ethiopia, Kenya, Tanzania

7.1.3 Europe

Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom

Greece, Hungary, Iceland, Italy, Turkey

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Mexico, USA

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

7.2.2 South America

Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela

Argentina, Chile, Ecuador, Peru

7.3 Deposits in Oceania Continent

7.3.1 Australia

New South Wales, New Zealand, Western Australia

New Zealand, Western Australia

All about Andesite and Scoria Properties

Know all about Andesite and Scoria properties here. All properties of rocks are important as they define the type of rock and its application. Andesite and Scoria belong to Igneous Rocks.Texture of Andesite is Aphanitic to Porphyritic whereas that of Scoria is Vesicular. Andesite appears Dull and Soft and Scoria appears Glassy and Vesicular. The luster of Andesite is vitreous while that of Scoria is subvitreous to dull. Andesite is available in bluish - grey, grey, pink, yellow colors whereas Scoria is available in black, brown, dark grey to black, red colors. The commercial uses of Andesite are commemorative tablets, creating artwork and that of Scoria are as a traction material on snow-covered roads, creating artwork, high-temperature insulation, in gas barbecue grills.