Trondhjemite

Trachyandesite

Trondhjemite and Trachyandesite

Trondhjemite

Trachyandesite

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1 Definition

1.1 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.

Trachyandesite is an extrusive igneous rock.

1.2 History

1.2.1 Origin

Tonale, Italy

Indonesia

1.2.2 Discoverer

Unknown

1.3 Etymology

Not Available

From French trachyandésite, trachy + andésite andesite, a lava intermediate in composition between trachyte and andesite

1.4 Class

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Plutonic

Volcanic

1.6 Other Categories

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

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Phaneritic

Glassy, Massive, Porphyritic, Scoriaceous, Vesicular

2.2 Color

Black, Brown, Light to Dark Grey, White

Black, Brown, Light to Dark Grey

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

81% Igneous Rocks Rocks have it !

✔ ✘

81% Igneous Rocks Rocks have it !

2.4.2 Scratch Resistant

✔ ✘

86% Igneous Rocks Rocks have it !

✔ ✘

86% Igneous Rocks Rocks have it !

2.4.3 Stain Resistant

✔ ✘

66% Igneous Rocks Rocks have it !

✔ ✘

66% Igneous Rocks Rocks have it !

2.4.4 Wind Resistant

✔ ✘

49% Igneous Rocks Rocks have it !

✔ ✘

49% Igneous Rocks Rocks have it !

2.4.5 Acid Resistant

✔ ✘

48% Igneous Rocks Rocks have it !

✔ ✘

48% Igneous Rocks Rocks have it !

2.5 Appearance

Banded and Foilated

Dull and Soft

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration

Countertops, Decorative Aggregates, Homes, Interior Decoration

3.1.2 Exterior Uses

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

As Building Stone, As Facing Stone, Garden Decoration

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

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

Building houses or walls, Cobblestones, for Road Aggregate, Rail Track Ballast, Roadstone

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers, Creating Artwork

Creating Artwork, Pottery

4 Types

4.1 Types

Not Available

Basaltic Trachyandesite

4.2 Features

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

Has High structural resistance against erosion and climate, Very fine grained rock

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

4.3.2 Famous Monuments

Not Applicable

4.3.3 Sculpture

Used

4.3.4 Famous Sculptures

Data Not Available

4.3.5 Pictographs

Not Used

Used

4.3.6 Petroglyphs

Not Used

Used

4.3.7 Figurines

Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

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

Trachyandesite 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.

5.2 Composition

5.2.1 Mineral Content

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

Alkali feldspar, Biotite, Olivine, Plagioclase, Pyroxene, Sodic plagioclase

5.2.2 Compound Content

NaCl, CaO, MgO, Silicon Dioxide

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

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

97% Igneous Rocks Rocks have it !

✔ ✘

97% Igneous Rocks Rocks have it !

5.3.2 Types of Metamorphism

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

Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

1.2.2 Weathering

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99% Igneous Rocks Rocks have it !

✔ ✘

99% Igneous Rocks Rocks have it !

1.4.1 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

1.4.2 Erosion

✔ ✘

92% Igneous Rocks Rocks have it !

✔ ✘

92% Igneous Rocks Rocks have it !

1.5.2 Types of Erosion

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

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

2 Properties

2.1 Physical Properties

2.1.1 Hardness

6-7

4-5

3.0.1 Grain Size

Medium to Fine Coarse Grained

Fine Grained

3.1.1 Fracture

Conchoidal

3.2.1 Streak

Bluish Black

Light to dark brown

3.2.2 Porosity

Very Less Porous

Less Porous

3.3.1 Luster

Subvitreous to Dull

Earthy

3.3.2 Compressive Strength

What Is Flint

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▼

Not Available

Rank: N/A (Overall)▶

37.40 N/mm²

Rank: 28 (Overall)▶

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What Is Obsidian

⊕

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175 (What Is Grani..)

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5.3.6 Cleavage

Not Available

Perfect

5.3.7 Toughness

2.1

2.3

5.3.9 Specific Gravity

2.86-3

2.8-3

5.3.11 Transparency

Opaque

5.3.12 Density

2.73 g/cm³

2.9-3.1 g/cm³

5.5 Thermal Properties

6.0.1 Specific Heat Capacity

What Is Banded ..

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▶

▼

0.92 kJ/Kg K

Rank: 10 (Overall)▶

0.84 kJ/Kg K

Rank: 15 (Overall)▶

▲

What Is Granulite

⊕

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1.09 (What Is Trave..)

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7.1.8 Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

8 Reserves

8.1 Deposits in Eastern Continents

8.1.1 Asia

Not Yet Found

India, Russia

8.1.2 Africa

Egypt

South Africa

8.1.3 Europe

Finland, Germany, Italy, Romania, Sweden, Turkey

Iceland

8.1.4 Others

Not Yet Found

8.2 Deposits in Western Continents

8.2.1 North America

USA

Canada, USA

8.2.2 South America

Argentina, Bolivia, Chile, Colombia, Ecuador, Peru

Brazil

8.3 Deposits in Oceania Continent

8.3.1 Australia

New Zealand, South Australia, Western Australia

Not Yet Found

All about Trondhjemite and Trachyandesite Properties

Know all about Trondhjemite and Trachyandesite properties here. All properties of rocks are important as they define the type of rock and its application. Trondhjemite and Trachyandesite belong to Igneous Rocks.Texture of Trondhjemite is Phaneritic whereas that of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Trondhjemite appears Banded and Foilated and Trachyandesite appears Dull and Soft. The luster of Trondhjemite is subvitreous to dull while that of Trachyandesite is earthy. Trondhjemite and Trachyandesite are available in black, brown, light to dark grey, white colors. The commercial uses of Trondhjemite are cemetery markers, creating artwork and that of Trachyandesite are creating artwork, pottery.