Tachylite

Larvikite

Tachylite and Larvikite

Tachylite

Larvikite

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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

Larvikite is an igneous rock and a variety of monzonite, notable for the presence of thumbnail-sized crystals of feldspar

History

Origin

Iceland

Larvik, Norway

Discoverer

Unknown

Etymology

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

From the town of Larvik in Norway, where this type of igneous rock is found

Class

Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

Family

Group

Volcanic

Plutonic

Other Categories

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

Texture

Vitreous

Phaneritic

Color

Black, Dark Brown

Black, Brown, Light to Dark Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy

Shiny

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Homes, Interior Decoration

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, Cement Manufacture, Construction Aggregate, for Road Aggregate

Medical Industry

Antiquity Uses

Artifacts

Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Cemetery Markers, Commemorative Tablets, Creating Artwork

Types

Volcanic glass

Quartz Monzonite, Syenite and Diorite

Features

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

Available in lots of colors, Is one of the oldest rock

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.

Larvikite 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

Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Muscovite or Illite, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon

Compound Content

Fe, Mg

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

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

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

Cataclastic Metamorphism, Impact 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

Properties

Physical Properties

Hardness

5.56-7

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

Vermilion

White

Porosity

Less Porous

Luster

Resinous

Subvitreous to Dull

Compressive Strength

206.00 N/mm²310.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

2.42.8-3

0 8.4

👆🏻

Transparency

Opaque

Density

3.058 g/cm³2.9-2.91 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.56 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

Cambodia, Russia, South Korea

Africa

East 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

Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru

Deposits in Oceania Continent

Australia

Victoria

New South Wales, New Zealand, Queensland, South Australia, Western Australia

All about Tachylite and Larvikite Properties

Know all about Tachylite and Larvikite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite and Larvikite belong to Igneous Rocks.Texture of Tachylite is Vitreous whereas that of Larvikite is Phaneritic. Tachylite appears Glassy and Larvikite appears Shiny. The luster of Tachylite is resinous while that of Larvikite is subvitreous to dull. Tachylite is available in black, dark brown colors whereas Larvikite is available in black, brown, light to dark grey, white colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Larvikite are cemetery markers, commemorative tablets, creating artwork.