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Rhomb Porphyry
Rhomb Porphyry

Gossan
Gossan



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Rhomb Porphyry
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Gossan

Rhomb Porphyry vs Gossan

Definition

Definition

Rhomb-porphyry is a porphyritic igneous rock with abundant wedge or lens shaped anorthoclase or feldspar phenocrysts
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.

History

Origin

-
Indonesia

Discoverer

Unknown
Cornish Gossen

Etymology

From Latin term that means purple
From Cornish gossen from gos, blood from Old Cornish guit

Class

Igneous Rocks
Metamorphic Rocks

Sub-Class

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

Family

Group

Volcanic
-

Other Categories

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

Texture

Texture

Aphanitic to Porphyritic
Rough, Sandy

Color

Black, Brown, Green, Grey, Pink, White
Brown, Brown- Black, Gold, Green, Rust

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Rough
Dull and Banded

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration
Countertops, Decorative Aggregates, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate

Medical Industry

-
-

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines
Artifacts

Other Uses

Commercial Uses

An Oil and Gas Reservoir, As a Feed Additive for Livestock, Metallurgical Flux, Soil Conditioner, Source of Magnesia (MgO)
Cemetery Markers, Commemorative Tablets, Gemstone

Types

Types

Igneous rock
Translocated gossan and Leakage gossan

Features

Host Rock for Lead
Clasts are smooth to touch, Easily splits into thin plates

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

Rhomb-porphyry 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.
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

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

Compound Content

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

Transformation

Metamorphism

Types of Metamorphism

Impact Metamorphism
-

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering
-

Erosion

Types of Erosion

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

Properties

Physical Properties

Hardness

5-5.54-5
1 7
👆🏻

Grain Size

Fine Grained
Fine to Medium Grained

Fracture

Conchoidal
Conchoidal

Streak

White
White to Grey

Porosity

Very Less Porous
Highly Porous

Luster

Subvitreous to Dull
Metallic

Compressive Strength

310.00 N/mm2-
0.15 450
👆🏻

Cleavage

Perfect
-

Toughness

2.7
-

Specific Gravity

2.862.0
0 8.4
👆🏻

Transparency

Translucent
Opaque

Density

2.8-2.9 g/cm3-9999 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K0.24 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

-
China, India, Indonesia, Russia, Singapore, South Korea

Africa

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

Europe

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

Others

-
-

Deposits in Western Continents

North America

USA
Canada, USA

South America

-
Brazil, Colombia, Ecuador

Deposits in Oceania Continent

Australia

-
New South Wales, South Australia, Western Australia

Rhomb Porphyry 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 Rhomb Porphyry and Gossan Reserves. Rhomb-porphyry is a porphyritic igneous rock with abundant wedge or lens shaped anorthoclase or feldspar phenocrysts. 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 Rhomb Porphyry vs Gossan information and Rhomb Porphyry vs Gossan characteristics in the upcoming sections.

Rhomb Porphyry 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. Rhomb Porphyry vs Gossan characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Rhomb Porphyry and Properties of Gossan. Learn more about Rhomb Porphyry vs Gossan in the next section. The interior uses of Rhomb Porphyry include Decorative aggregates, Homes and Interior decoration whereas the interior uses of Gossan include Countertops, Decorative aggregates and Interior decoration. Due to some exceptional properties of Rhomb Porphyry and Gossan, they have various applications in construction industry. The uses of Rhomb Porphyry in construction industry include As a flux in the production of steel and pig iron, As a sintering agent in steel industry to process iron ore, As dimension stone, Cement manufacture, For road aggregate, Making natural cement, Manufacture of magnesium and dolomite refractories and that of Gossan include As dimension stone, Cement manufacture, Construction aggregate, For road aggregate.

More about Rhomb Porphyry and Gossan

Here you can know more about Rhomb Porphyry and Gossan. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Rhomb Porphyry and Gossan consists of mineral content and compound content. The mineral content of Rhomb Porphyry includes Alkali feldspar, Biotite, Plagioclase, Pyroxene 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 Rhomb Porphyry vs Gossan, the texture, color and appearance plays an important role in determining the type of rock. Rhomb Porphyry is available in black, brown, green, grey, pink, white colors whereas, Gossan is available in brown, brown- black, gold, green, rust colors. Appearance of Rhomb Porphyry is Rough and that of Gossan is Dull and Banded. Properties of rock is another aspect for Rhomb Porphyry vs Gossan. The hardness of Rhomb Porphyry is 5-5.5 and that of Gossan is 4-5. The types of Rhomb Porphyry are Igneous rock 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 Rhomb Porphyry is white while that of Gossan is white to grey. The specific heat capacity of Rhomb Porphyry is 0.92 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.Rhomb Porphyry is heat resistant, pressure resistant whereas Gossan is heat resistant, impact resistant, pressure resistant.