Whiteschist

Trondhjemite

Whiteschist and Trondhjemite

Whiteschist

Trondhjemite

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1 Definition

1.2 Definition

Whiteschist is an uncommon rock type belonging to a class of metamorphic rock, this is formed at high-ultra-high pressures

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.

1.3 History

1.3.1 Origin

Tasmania

Tonale, Italy

1.4.1 Discoverer

Unknown

1.5 Etymology

From French schiste, Greek skhistos i.e. split

Not Available

1.6 Class

Metamorphic Rocks

Igneous Rocks

1.7.2 Sub-Class

Durable Rock, Soft Rock

Durable Rock, Hard Rock

1.9 Family

1.9.1 Group

Not Applicable

Plutonic

2.2 Other Categories

Fine Grained Rock, Medium Grained Rock, Opaque Rock

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

3 Texture

3.1 Texture

Foliated

Phaneritic

3.2 Color

Colourless, Green, Grey, White

Black, Brown, Light to Dark Grey, White

3.4 Maintenance

Less

3.6 Durability

Durable

3.6.2 Water Resistant

✔ ✘

3.6.3 Scratch Resistant

✔ ✘

3.6.5 Stain Resistant

✔ ✘

3.6.7 Wind Resistant

✔ ✘

3.6.8 Acid Resistant

✔ ✘

3.7 Appearance

Banded and Foilated

4 Uses

4.1 Architecture

4.1.1 Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration

4.3.1 Exterior Uses

Garden Decoration, Paving Stone

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

4.3.3 Other Architectural Uses

Curbing

4.4 Industry

5.1.1 Construction Industry

for Road Aggregate

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

5.1.3 Medical Industry

Not Yet Used

5.2 Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

5.3 Other Uses

5.3.1 Commercial Uses

Creating Artwork, Gemstone, Jewelry, Production of Lime

Cemetery Markers, Creating Artwork

6 Types

6.1 Types

Not Available

6.3 Features

High percentage of mica, Host Rock for Lead

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

6.4 Archaeological Significance

6.4.1 Monuments

Used

Not Yet Used

6.4.0 Famous Monuments

Data Not Available

Not Applicable

6.5.1 Sculpture

Used

6.6.2 Famous Sculptures

Data Not Available

7.1.1 Pictographs

Used

Not Used

7.2.1 Petroglyphs

Used

Not Used

7.3.2 Figurines

Used

7.4 Fossils

Absent

8 Formation

8.1 Formation

Whiteschist is formed by dynamic metamorphism at high temperatures and pressures that aligns the grains of mica, hornblende and other elongated minerals into thin layers.

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

8.2 Composition

8.2.1 Mineral Content

Carbonate, Coesite, Quartz, Silica

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

8.2.3 Compound Content

CaO, Mg, MgO, Silicon Dioxide

NaCl, CaO, MgO, Silicon Dioxide

8.3 Transformation

8.3.1 Metamorphism

✔ ✘

8.3.3 Types of Metamorphism

Not Applicable

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

8.3.4 Weathering

✔ ✘

8.3.6 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

8.4.1 Erosion

✔ ✘

8.4.2 Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

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

10 Properties

10.1 Physical Properties

10.1.1 Hardness

1.56-7

1 7

11.1.3 Grain Size

Fine to Medium Grained

Medium to Fine Coarse Grained

11.1.5 Fracture

Conchoidal

11.1.7 Streak

White

Bluish Black

11.1.9 Porosity

Less Porous

Very Less Porous

11.1.10 Luster

Subvitreous to Dull

11.1.12 Compressive Strength

200.00 N/mm²NA

0.15 450

12.3.2 Cleavage

Perfect

Not Available

12.3.3 Toughness

2.1

12.3.4 Specific Gravity

2.862.86-3

0 8.4

12.3.8 Transparency

Opaque

12.3.9 Density

2.8-2.9 g/cm³2.73 g/cm³

0 1400

13.4 Thermal Properties

13.4.1 Specific Heat Capacity

0.92 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

1.4.1 Resistance

Heat Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

2 Reserves

2.1 Deposits in Eastern Continents

2.1.1 Asia

Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam

Not Yet Found

2.1.2 Africa

Egypt, Ethiopia, Morocco, Nigeria, South Africa

Egypt

2.1.3 Europe

Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland

Finland, Germany, Italy, Romania, Sweden, Turkey

2.1.4 Others

Not Yet Found

2.2 Deposits in Western Continents

2.2.1 North America

Canada, Costa Rica, Cuba, Mexico, Panama, USA

USA

2.2.2 South America

Brazil, Colombia, Guyana

Argentina, Bolivia, Chile, Colombia, Ecuador, Peru

2.3 Deposits in Oceania Continent

2.3.1 Australia

New South Wales, New Zealand, Queensland

New Zealand, South Australia, Western Australia

All about Whiteschist and Trondhjemite Properties

Know all about Whiteschist and Trondhjemite properties here. All properties of rocks are important as they define the type of rock and its application. Whiteschist belongs to Metamorphic Rocks while Trondhjemite belongs to Igneous Rocks.Texture of Whiteschist is Foliated whereas that of Trondhjemite is Phaneritic. Whiteschist appears Banded and Foilated and Trondhjemite appears Banded and Foilated. The luster of Whiteschist and Trondhjemite is subvitreous to dull. Whiteschist is available in colourless, green, grey, white colors whereas Trondhjemite is available in black, brown, light to dark grey, white colors. The commercial uses of Whiteschist are creating artwork, gemstone, jewelry, production of lime and that of Trondhjemite are cemetery markers, creating artwork.