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Trondhjemite
Trondhjemite

Gossan
Gossan



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Trondhjemite
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Trondhjemite vs Gossan

Definition

Definition

Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.

History

Origin

Tonale, Italy
Indonesia

Discoverer

Unknown
Cornish Gossen

Etymology

From Trondheim, Norway
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

Plutonic
-

Other Categories

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

Texture

Texture

Phaneritic
Rough, Sandy

Color

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

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Banded and Foilated
Dull and Banded

Uses

Architecture

Interior Uses

Decorative Aggregates, Entryways, Flooring, 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 Dimension Stone, Cement Manufacture, 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

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

Types

Types

Intermediate intrusive rock
Translocated gossan and Leakage gossan

Features

Is one of the oldest rock, Typically speckled black and white.
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

When alkali feldspar is extracted from granite, it changes to granitoid and later, it becomes trondhjemite with quartz as major mineral.
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

Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon
Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon

Compound Content

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

Transformation

Metamorphism

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism
-

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering
-

Erosion

Types of Erosion

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

Properties

Physical Properties

Hardness

6-74-5
1 7
👆🏻

Grain Size

Medium to Fine Coarse Grained
Fine to Medium Grained

Fracture

Conchoidal
Conchoidal

Streak

Bluish Black
White to Grey

Porosity

Very Less Porous
Highly Porous

Luster

Subvitreous to Dull
Metallic

Compressive Strength

130.00 N/mm2-
0.15 450
👆🏻

Cleavage

-
-

Toughness

2.1
-

Specific Gravity

2.86-32.0
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

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

Reserves

Deposits in Eastern Continents

Asia

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

Africa

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

Europe

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

Others

-
-

Deposits in Western Continents

North America

USA
Canada, USA

South America

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

Deposits in Oceania Continent

Australia

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

Trondhjemite 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 Trondhjemite and Gossan Reserves. Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.. 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 Trondhjemite vs Gossan information and Trondhjemite vs Gossan characteristics in the upcoming sections.

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

More about Trondhjemite and Gossan

Here you can know more about Trondhjemite and Gossan. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Trondhjemite and Gossan consists of mineral content and compound content. The mineral content of Trondhjemite includes Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, 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 Trondhjemite vs Gossan, the texture, color and appearance plays an important role in determining the type of rock. Trondhjemite is available in black, brown, light to dark grey, white colors whereas, Gossan is available in brown, brown- black, gold, green, rust colors. Appearance of Trondhjemite is Banded and Foilated and that of Gossan is Dull and Banded. Properties of rock is another aspect for Trondhjemite vs Gossan. The hardness of Trondhjemite is 6-7 and that of Gossan is 4-5. The types of Trondhjemite are Intermediate intrusive 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 Trondhjemite is bluish black while that of Gossan is white to grey. The specific heat capacity of Trondhjemite 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.Trondhjemite is heat resistant, pressure resistant, wear resistant whereas Gossan is heat resistant, impact resistant, pressure resistant.