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Trondhjemite
Trondhjemite




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Trondhjemite Rock

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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.

History

Origin

Tonale, Italy

Discoverer

Unknown

Etymology

From Trondheim, Norway

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Plutonic

Other Categories

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

Texture

Texture

Phaneritic

Color

Black, Brown, Light to Dark Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

81% - Igneous Rocks Rocks have it !

Scratch Resistant

86% - Igneous Rocks Rocks have it !

Stain Resistant

66% - Igneous Rocks Rocks have it !

Wind Resistant

49% - Igneous Rocks Rocks

Acid Resistant

48% - Igneous Rocks Rocks

Appearance

Banded and Foilated

Uses

Architecture

Interior Uses

Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing

Industry

Construction Industry

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

Medical Industry

-

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Types

Types

Intermediate intrusive rock

Features

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

Archaeological Significance

Monuments

-

Famous Monuments

-

Sculpture

-

Famous Sculptures

-

Pictographs

-

Petroglyphs

-

Figurines

-

Fossils

Absent

Formation

Formation

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

Composition

Mineral Content

Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon

Compound Content

NaCl, CaO, MgO, Silicon Dioxide

Transformation

Metamorphism

97% - Igneous Rocks Rocks have it !

Types of Metamorphism

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

Weathering

99% - Igneous Rocks Rocks have it !

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

92% - Igneous Rocks Rocks have it !

Types of Erosion

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

Properties

Physical Properties

Hardness

6-7
1 7
👆🏻

Grain Size

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

Bluish Black

Porosity

Very Less Porous

Luster

Subvitreous to Dull

Compressive Strength

130.00 N/mm2
Rank: 24 (Overall)
0.15 450
👆🏻

Cleavage

-

Toughness

2.1

Specific Gravity

2.86-3
0 8.4
👆🏻

Transparency

Opaque

Density

2.73 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K
Rank: 10 (Overall)
0.14 3.2
👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

-

Africa

Egypt

Europe

Finland, Germany, Italy, Romania, Sweden, Turkey

Others

-

Deposits in Western Continents

North America

USA

South America

Argentina, Bolivia, Chile, Colombia, Ecuador, Peru

Deposits in Oceania Continent

Australia

New Zealand, South Australia, Western Australia

Information about Trondhjemite

Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Trondhjemite Uses. We have provided you with all information about Trondhjemite rock here. 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.. Trondhjemite is available in black, brown, light to dark grey, white colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Trondhjemite is bluish black. Get to know more about Trondhjemite rock and characteristics of Trondhjemite rock in the next sections.