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Andesite
Andesite

Gossan
Gossan



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Andesite
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Gossan

Andesite vs Gossan

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Definition

Definition

Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.

History

Origin

North America
Indonesia

Discoverer

Theodor von Gümbel
Cornish Gossen

Etymology

From Andes mountains, where it is found in abundance
From Cornish gossen from gos, blood from Old Cornish guit

Class

Igneous Rocks
Metamorphic Rocks

Sub-Class

Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock

Family

Group

Volcanic
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Other Categories

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

Texture

Texture

Aphanitic to Porphyritic
Rough, Sandy

Color

Bluish - Grey, Grey, Pink, Yellow
Brown, Brown- Black, Gold, Green, Rust

Maintenance

More
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull and Soft
Dull and Banded

Uses

Architecture

Interior Uses

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

Exterior Uses

Office Buildings, Roof Tiles
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

Cobblestones, Construction Aggregate, for Road Aggregate
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate

Medical Industry

-
-

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines
Artifacts

Other Uses

Commercial Uses

Commemorative Tablets, Creating Artwork
Cemetery Markers, Commemorative Tablets, Gemstone

Types

Types

Icelandite
Translocated gossan and Leakage gossan

Features

Generally rough to touch, High silica content, Is one of the oldest rock
Clasts are smooth to touch, Easily splits into thin plates

Archaeological Significance

Monuments

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Famous Monuments

Middle of the Earth in Ecuador
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Sculpture

-
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Famous Sculptures

-
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Pictographs

-
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Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

Andesite is a fine-grained igneous rock that forms when the magma is erupted onto the surface and is crystallized quickly.
Earth movements can cause rocks to be either deeply buried or squeezed and hence the rocks are heated and put under great pressure.

Composition

Mineral Content

Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Zircon
Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon

Compound Content

Silicon Dioxide
Aluminium Oxide, CaO, Fe, FeO, Silicon Dioxide, Sulphur

Transformation

Metamorphism

Types of Metamorphism

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

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering
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Erosion

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion
Chemical Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

74-5
1 7
👆🏻

Grain Size

Very fine-grained
Fine to Medium Grained

Fracture

Uneven
Conchoidal

Streak

White
White to Grey

Porosity

Less Porous
Highly Porous

Luster

Vitreous
Metallic

Compressive Strength

225.00 N/mm2-
0.15 450
👆🏻

Cleavage

-
-

Toughness

1.1
-

Specific Gravity

2.5-2.82.0
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

2.11-2.36 g/cm3-9999 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

2.39 kJ/Kg K0.24 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

India, Indonesia, Japan, Nepal, South Korea
China, India, Indonesia, Russia, Singapore, South Korea

Africa

Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania
Cape Verde, Ethiopia, Ghana, South Africa, Western Africa

Europe

Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom
Albania, France, Germany, Great Britain, United Kingdom

Others

-
-

Deposits in Western Continents

North America

Mexico, USA
Canada, USA

South America

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

Deposits in Oceania Continent

Australia

New South Wales, New Zealand, Western Australia
New South Wales, South Australia, Western Australia

Andesite vs Gossan 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 Andesite and Gossan Reserves. Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava. Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.. 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 Andesite vs Gossan information and Andesite vs Gossan characteristics in the upcoming sections.

Andesite vs Gossan 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. Andesite vs Gossan characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Andesite and Properties of Gossan. Learn more about Andesite vs Gossan in the next section. The interior uses of Andesite include Decorative aggregates, Floor tiles, Homes, Interior decoration and Kitchens whereas the interior uses of Gossan include Countertops, Decorative aggregates and Interior decoration. Due to some exceptional properties of Andesite and Gossan, they have various applications in construction industry. The uses of Andesite in construction industry include Cobblestones, Construction aggregate, For road aggregate and that of Gossan include As dimension stone, Cement manufacture, Construction aggregate, For road aggregate.

More about Andesite and Gossan

Here you can know more about Andesite and Gossan. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Andesite and Gossan consists of mineral content and compound content. The mineral content of Andesite includes Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Zircon and mineral content of Gossan includes Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon. You can also check out the list of all Igneous Rocks. When we have to compare Andesite vs Gossan, the texture, color and appearance plays an important role in determining the type of rock. Andesite is available in bluish - grey, grey, pink, yellow colors whereas, Gossan is available in brown, brown- black, gold, green, rust colors. Appearance of Andesite is Dull and Soft and that of Gossan is Dull and Banded. Properties of rock is another aspect for Andesite vs Gossan. The hardness of Andesite is 7 and that of Gossan is 4-5. The types of Andesite are Icelandite whereas types of Gossan are Translocated gossan and Leakage gossan. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Andesite is white while that of Gossan is white to grey. The specific heat capacity of Andesite is 2.39 kJ/Kg K and that of Gossan is 0.24 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Andesite is heat resistant, pressure resistant, wear resistant whereas Gossan is heat resistant, impact resistant, pressure resistant.