Trachyte

Greenschist

Trachyte and Greenschist

Trachyte

Greenschist

Add ⊕

1 Definition

1.1 Definition

Trachyte is a grey fine-grained volcanic rock which mainly consists of alkali feldspar

Greenschist is a metamorphic rock that is formed under lowest temperatures and pressures and is usually produced by regional metamorphism

1.2 History

1.2.1 Origin

Unknown

1.2.2 Discoverer

Alexandre Brongniart and René Just Haüy

Unknown

1.3 Etymology

From Greek trakhus rough’ or trakhutēs roughness

From minerals such as chlorite, serpentine, and epidote, and platy minerals such as muscovite and platy serpentine which are green in color

1.4 Class

Igneous Rocks

Metamorphic Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Volcanic

Not Applicable

1.6 Other Categories

Fine Grained Rock, Opaque Rock

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

2 Texture

2.1 Texture

Aphanitic to Porphyritic

Foliated, Platy

2.2 Color

Black, Brown, Dark Greenish - Grey, Green, Grey, Light to Dark Grey, White

Dark Greenish - Grey, Green

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Banded

Layered and Shiny

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Flooring, Homes, Interior Decoration

Bathrooms, Countertops, Decorative Aggregates, Entryways, Homes, Interior Decoration

3.1.2 Exterior Uses

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

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories

As Dimension Stone, Building houses or walls, Cement Manufacture, Cutting Tool, for Road Aggregate, Roadstone

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers, Creating Artwork

Blackboards, Manufacture of tools, Writing Slates

4 Types

4.1 Types

Not Available

4.2 Features

Available in Lots of Colors and Patterns, Is one of the oldest rock, Matrix variable

Easily splits into thin plates, Smooth to touch

4.3 Archaeological Significance

4.3.1 Monuments

Used

Not Yet Used

4.3.2 Famous Monuments

Data Not Available

Not Applicable

4.3.3 Sculpture

Used

Not Yet Used

4.3.4 Famous Sculptures

Data Not Available

Not Applicable

4.3.5 Pictographs

Used

4.3.6 Petroglyphs

Used

4.3.7 Figurines

Used

Not Yet Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

Trachyte is an igneous volcanic rock with an aphanitic to porphyritic texture. It is the volcanic equivalent of syenite rock and forms as a result of magmatic differentiation.

Greenschist is medium grade metamorphic rock, formed by the metamorphosis of mudstone or shale, or some types of igneous rock, when it is subjected to higher temperatures and pressures.

5.2 Composition

5.2.1 Mineral Content

Augite, Biotite, Feldspar, Hornblade, Plagioclase, Quartz

Alusite, Amphibole, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Serpentine, Sillimanite, Staurolite, Talc

5.2.2 Compound Content

Potassium Oxide, Sodium Oxide, Silicon Dioxide

CaO, Carbon Dioxide, MgO

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Not Applicable

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

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

Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

63.5-4

1 7

6.1.2 Grain Size

Fine Grained

Medium to Fine Coarse Grained

6.1.3 Fracture

Not Available

Conchoidal

6.1.4 Streak

White

6.1.5 Porosity

Less Porous

Highly Porous

6.1.6 Luster

Metallic

Shiny

6.1.7 Compressive Strength

150.00 N/mm²NA

0.15 450

6.1.8 Cleavage

Not Available

Slaty

6.1.9 Toughness

Not Available

1.5

6.1.10 Specific Gravity

2.72.5-2.9

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

2.43-2.45 g/cm³2.8-2.9 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NANA

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Impact Resistant, Pressure Resistant, Water Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam

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

7.1.2 Africa

Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

Egypt, Ethiopia, Morocco, Nigeria, South Africa

7.1.3 Europe

Bulgaria, England, Germany, Norway, Romania, Switzerland

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

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

USA

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

7.2.2 South America

Brazil, Chile

Brazil, Colombia, Guyana

7.3 Deposits in Oceania Continent

7.3.1 Australia

New Zealand, Queensland, South Australia, Western Australia

New South Wales, New Zealand, Queensland

All about Trachyte and Greenschist Properties

Know all about Trachyte and Greenschist properties here. All properties of rocks are important as they define the type of rock and its application. Trachyte belongs to Igneous Rocks while Greenschist belongs to Metamorphic Rocks.Texture of Trachyte is Aphanitic to Porphyritic whereas that of Greenschist is Foliated, Platy. Trachyte appears Banded and Greenschist appears Layered and Shiny. The luster of Trachyte is metallic while that of Greenschist is shiny. Trachyte and Greenschist are available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors. The commercial uses of Trachyte are cemetery markers, creating artwork and that of Greenschist are blackboards, manufacture of tools, writing slates.