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Gossan
Gossan

Epidosite
Epidosite



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Gossan
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Epidosite

Gossan vs Epidosite

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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.
Epidosite is a highly altered epidote and quartz bearing rock which is a type of metasomatite, essentially altered basalt

History

Origin

Indonesia
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Discoverer

Cornish Gossen
Unknown

Etymology

From Cornish gossen from gos, blood from Old Cornish guit
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Class

Metamorphic Rocks
Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock

Family

Group

-
Volcanic

Other Categories

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

Texture

Texture

Rough, Sandy
Glassy, Massive, Porphyritic, Scoriaceous, Vesicular

Color

Brown, Brown- Black, Gold, Green, Rust
Black, Brown, Light to Dark Grey

Maintenance

Less
Less

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, Hotels, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

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
Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite

Features

Clasts are smooth to touch, Easily splits into thin plates
Has High structural resistance against erosion and climate, Very fine grained rock

Archaeological Significance

Monuments

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-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

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.
Epidosite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

Composition

Mineral Content

Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon
Olivine, Plagioclase, Pyroxene

Compound Content

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

Transformation

Metamorphism

Types of Metamorphism

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Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism

Weathering

Types of Weathering

-
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

Chemical Erosion, Sea Erosion, Wind Erosion
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Properties

Physical Properties

Hardness

4-56
1 7
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Grain Size

Fine to Medium Grained
Fine to Coarse Grained

Fracture

Conchoidal
Conchoidal

Streak

White to Grey
White to Grey

Porosity

Highly Porous
Less Porous

Luster

Metallic
-

Compressive Strength

-160.00 N/mm2
0.15 450
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Cleavage

-
-

Toughness

-
2.3

Specific Gravity

2.02.8-3
0 8.4
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Transparency

Opaque
Opaque

Density

-9999 g/cm3-9999 g/cm3
0 1400
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Thermal Properties

Specific Heat Capacity

0.24 kJ/Kg K0.84 kJ/Kg K
0.14 3.2
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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, Russia

Africa

Cape Verde, Ethiopia, Ghana, South Africa, Western Africa
South Africa

Europe

Albania, France, Germany, Great Britain, United Kingdom
Iceland

Others

-
-

Deposits in Western Continents

North America

Canada, USA
Canada, USA

South America

Brazil, Colombia, Ecuador
Brazil

Deposits in Oceania Continent

Australia

New South Wales, South Australia, Western Australia
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Gossan vs Epidosite 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 Epidosite Reserves. Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.. Epidosite is a highly altered epidote and quartz bearing rock which is a type of metasomatite, essentially altered basalt. 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 Epidosite information and Gossan vs Epidosite characteristics in the upcoming sections.

Gossan vs Epidosite 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 Epidosite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Gossan and Properties of Epidosite. Learn more about Gossan vs Epidosite in the next section. The interior uses of Gossan include Countertops, Decorative aggregates and Interior decoration whereas the interior uses of Epidosite include Decorative aggregates, Floor tiles, Homes, Hotels and Interior decoration. Due to some exceptional properties of Gossan and Epidosite, 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 Epidosite include As dimension stone, Cobblestones, Rail track ballast, Roadstone.

More about Gossan and Epidosite

Here you can know more about Gossan and Epidosite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Gossan and Epidosite 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 Epidosite includes Olivine, Plagioclase, Pyroxene. You can also check out the list of all Metamorphic Rocks. When we have to compare Gossan vs Epidosite, 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, Epidosite is available in black, brown, light to dark grey colors. Appearance of Gossan is Dull and Banded and that of Epidosite is Dull and Soft. Properties of rock is another aspect for Gossan vs Epidosite. The hardness of Gossan is 4-5 and that of Epidosite is 6. The types of Gossan are Translocated gossan and Leakage gossan whereas types of Epidosite are Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Gossan and Epidosite is white to grey. The specific heat capacity of Gossan is 0.24 kJ/Kg K and that of Epidosite 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.Gossan is heat resistant, impact resistant, pressure resistant whereas Epidosite is heat resistant, pressure resistant, wear resistant.