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Gossan
Gossan

Andesite
Andesite



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Andesite

Gossan vs Andesite

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Definition

Definition

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

History

Origin

Indonesia
North America

Discoverer

Cornish Gossen
Theodor von Gümbel

Etymology

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

Class

Metamorphic Rocks
Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock

Family

Group

-
Volcanic

Other Categories

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

Texture

Texture

Rough, Sandy
Aphanitic to Porphyritic

Color

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

Maintenance

Less
More

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull and Banded
Dull and Soft

Uses

Architecture

Interior Uses

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

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

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

Medical Industry

-
-

Antiquity Uses

Artifacts
Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

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

Types

Types

Translocated gossan and Leakage gossan
Icelandite

Features

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

Archaeological Significance

Monuments

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-

Famous Monuments

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Middle of the Earth in Ecuador

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

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-

Petroglyphs

-
-

Figurines

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-

Fossils

Absent
Absent

Formation

Formation

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

Composition

Mineral Content

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

Compound Content

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

Transformation

Metamorphism

Types of Metamorphism

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

Weathering

Types of Weathering

-
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

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

Properties

Physical Properties

Hardness

4-57
1 7
👆🏻

Grain Size

Fine to Medium Grained
Very fine-grained

Fracture

Conchoidal
Uneven

Streak

White to Grey
White

Porosity

Highly Porous
Less Porous

Luster

Metallic
Vitreous

Compressive Strength

-225.00 N/mm2
0.15 450
👆🏻

Cleavage

-
-

Toughness

-
1.1

Specific Gravity

2.02.5-2.8
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

-9999 g/cm32.11-2.36 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.24 kJ/Kg K2.39 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

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

Africa

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

Europe

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

Others

-
-

Deposits in Western Continents

North America

Canada, USA
Mexico, USA

South America

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

Deposits in Oceania Continent

Australia

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

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

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

More about Gossan and Andesite

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