Tachylite

Granulite

Tachylite and Granulite

Tachylite

Granulite

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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

Granulite is fine to medium grained metamorphic rock with a granular of polygonal crystals.

History

Origin

Iceland

Central Europe

Discoverer

Unknown

Etymology

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

From Latin granulum, a little grain or fine grained

Class

Igneous Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

Family

Group

Volcanic

Other Categories

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

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Vitreous

Granoblastic

Color

Black, Dark Brown

Black, Brown

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy

Veined or Pebbled

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Bathrooms, Countertops, Decorative Aggregates, Entryways, Flooring, Homes, Hotels, Interior Decoration, Kitchens, Stair Treads

Exterior Uses

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

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

Other Architectural Uses

Curbing

Industry

Construction Industry

Cutting Tool, Knives, Landscaping, Scrapers

As Dimension Stone, Building houses or walls

Medical Industry

Antiquity Uses

Artifacts

Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Curling, Gemstone, Laboratory bench tops, Soil Conditioner, Tombstones

Types

Volcanic glass

Metamorphic rock

Features

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

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.

Granulite is a fine-grained granular metamorphic rock in which the main component minerals are feldspars and quartz and forms at high temperature and pressure conditions.

Composition

Mineral Content

Feldspar, Olivine

Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Quartz

Compound Content

Fe, Mg

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

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

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

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Sea Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5.56-7

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Medium to Coarse Grained

Fracture

Conchoidal

Streak

Vermilion

White

Porosity

Less Porous

Very Less Porous

Luster

Resinous

Vitreous

Compressive Strength

206.00 N/mm²175.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

2.42.8-3.0

0 8.4

👆🏻

Transparency

Opaque

Density

3.058 g/cm³3.06-3.33 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.56 kJ/Kg K0.14 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat 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, Nigeria, South Africa

Europe

England, Germany, Hungary, Iceland, Scotland, Sweden

Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic

Others

Hawaii Islands

Deposits in Western Continents

North America

USA

Canada, USA

South America

Deposits in Oceania Continent

Australia

Victoria

All about Tachylite and Granulite Properties

Know all about Tachylite and Granulite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Granulite belongs to Metamorphic Rocks.Texture of Tachylite is Vitreous whereas that of Granulite is Granoblastic. Tachylite appears Glassy and Granulite appears Veined or Pebbled. The luster of Tachylite is resinous while that of Granulite is vitreous. Tachylite is available in black, dark brown colors whereas Granulite is available in black, brown colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Granulite are curling, gemstone, laboratory bench tops, soil conditioner, tombstones.