Tachylite

Trachyte

Tachylite and Trachyte

Tachylite

Trachyte

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Definition

Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt

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

History

Origin

Iceland

Discoverer

Unknown

Alexandre Brongniart and René Just Haüy

Etymology

From German Tachylite, from tachy- + Greek lutos soluble, melting

From Greek trakhus rough’ or trakhutēs roughness

Class

Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Other Categories

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

Fine Grained Rock, Opaque Rock

Texture

Vitreous

Aphanitic to Porphyritic

Color

Black, Dark Brown

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

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy

Banded

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Flooring, Homes, Interior Decoration

Exterior Uses

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

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

Other Architectural Uses

Curbing

Industry

Construction Industry

Cutting Tool, Knives, Landscaping, Scrapers

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

Medical Industry

Antiquity Uses

Artifacts

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Types

Volcanic glass

Felsic volcanic rock

Features

Available in Lots of Colors and Patterns, Clasts are smooth to touch

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

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

Tachylite 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.

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.

Composition

Mineral Content

Feldspar, Olivine

Augite, Biotite, Feldspar, Hornblade, Plagioclase, Quartz

Compound Content

Fe, Mg

Potassium Oxide, Sodium Oxide, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

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

Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Sea Erosion, Water Erosion, Wind Erosion

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

Properties

Physical Properties

Hardness

5.56

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Fine Grained

Fracture

Conchoidal

Streak

Vermilion

White

Porosity

Less Porous

Luster

Resinous

Metallic

Compressive Strength

206.00 N/mm²150.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

2.42.7

0 8.4

👆🏻

Transparency

Opaque

Density

3.058 g/cm³2.43-2.45 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.56 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Cambodia, Russia, South Korea

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

Africa

East Africa

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

Europe

England, Germany, Hungary, Iceland, Scotland, Sweden

Bulgaria, England, Germany, Norway, Romania, Switzerland

Others

Hawaii Islands

Deposits in Western Continents

North America

USA

South America

Brazil, Chile

Deposits in Oceania Continent

Australia

Victoria

New Zealand, Queensland, South Australia, Western Australia

All about Tachylite and Trachyte Properties

Know all about Tachylite and Trachyte properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite and Trachyte belong to Igneous Rocks.Texture of Tachylite is Vitreous whereas that of Trachyte is Aphanitic to Porphyritic. Tachylite appears Glassy and Trachyte appears Banded. The luster of Tachylite is resinous while that of Trachyte is metallic. Tachylite is available in black, dark brown colors whereas Trachyte is available in black, brown, dark greenish - grey, green, grey, light to dark grey, white colors. The commercial uses of Tachylite and Trachyte are cemetery markers, creating artwork.