Tachylite Rock | History

Definition

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

History

Origin

Iceland

Discoverer

Unknown

Etymology

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

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

Texture

Vitreous

Color

Black, Dark Brown

Maintenance

Durability

Durable

Water Resistant

✔ ✘

81% - Igneous Rocks Rocks have it !

Scratch Resistant

✔ ✘

86% - Igneous Rocks Rocks

Stain Resistant

✔ ✘

66% - Igneous Rocks Rocks

Wind Resistant

✔ ✘

49% - Igneous Rocks Rocks have it !

Acid Resistant

✔ ✘

48% - Igneous Rocks Rocks have it !

Appearance

Glassy

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing

Industry

Construction Industry

Cutting Tool, Knives, Landscaping, Scrapers

Medical Industry

Antiquity Uses

Artifacts

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Types

Volcanic glass

Features

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

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.

Composition

Mineral Content

Feldspar, Olivine

Compound Content

Fe, Mg

Transformation

Metamorphism

✔ ✘

97% - Igneous Rocks Rocks have it !

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal 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, Sea Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5.5

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

Vermilion

Porosity

Less Porous

Luster

Resinous

Compressive Strength

206.00 N/mm²

Rank: 11 (Overall)

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

2.4

0 8.4

👆🏻

Transparency

Opaque

Density

3.058 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.56 kJ/Kg K

Rank: 27 (Overall)

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Cambodia, Russia, South Korea

Africa

East Africa

Europe

England, Germany, Hungary, Iceland, Scotland, Sweden

Others

Hawaii Islands

Deposits in Western Continents

North America

USA

South America

Deposits in Oceania Continent

Australia

Victoria