Tachylite

Andesite

Tachylite vs Andesite

Tachylite

Andesite

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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

Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava

History

Origin

Iceland

North America

Discoverer

Unknown

Theodor von Gümbel

Etymology

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

From Andes mountains, where it is found in abundance

Class

Igneous 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

Fine Grained Rock, Opaque Rock

Texture

Vitreous

Aphanitic to Porphyritic

Color

Black, Dark Brown

Bluish - Grey, Grey, Pink, Yellow

Maintenance

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy

Dull and Soft

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration, Kitchens

Exterior Uses

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

Office Buildings, Roof Tiles

Other Architectural Uses

Curbing

Industry

Construction Industry

Cutting Tool, Knives, Landscaping, Scrapers

Cobblestones, Construction Aggregate, for Road Aggregate

Medical Industry

Antiquity Uses

Artifacts

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

Commemorative Tablets, Creating Artwork

Types

Volcanic glass

Icelandite

Features

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

Generally rough to touch, High silica content, Is one of the oldest rock

Archaeological Significance

Monuments

Famous Monuments

Middle of the Earth in Ecuador

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.

Andesite is a fine-grained igneous rock that forms when the magma is erupted onto the surface and is crystallized quickly.

Composition

Mineral Content

Feldspar, Olivine

Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Zircon

Compound Content

Fe, Mg

Silicon 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

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Sea Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

5.57

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Very fine-grained

Fracture

Conchoidal

Uneven

Streak

Vermilion

White

Porosity

Less Porous

Luster

Resinous

Vitreous

Compressive Strength

206.00 N/mm²225.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

1.1

Specific Gravity

2.42.5-2.8

0 8.4

👆🏻

Transparency

Opaque

Density

3.058 g/cm³2.11-2.36 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.56 kJ/Kg K2.39 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Cambodia, Russia, South Korea

India, Indonesia, Japan, Nepal, South Korea

Africa

East Africa

Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania

Europe

England, Germany, Hungary, Iceland, Scotland, Sweden

Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom

Others

Hawaii Islands

Deposits in Western Continents

North America

USA

Mexico, USA

South America

Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela

Deposits in Oceania Continent

Australia

Victoria

New South Wales, New Zealand, Western Australia

Tachylite vs Andesite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Tachylite and Andesite Reserves. Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt. Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Tachylite vs Andesite information and Tachylite vs Andesite characteristics in the upcoming sections.

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Tachylite vs Andesite Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Tachylite vs Andesite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Tachylite and Properties of Andesite. Learn more about Tachylite vs Andesite in the next section. The interior uses of Tachylite include Decorative aggregates and Interior decoration whereas the interior uses of Andesite include Decorative aggregates, Floor tiles, Homes, Interior decoration and Kitchens. Due to some exceptional properties of Tachylite and Andesite, they have various applications in construction industry. The uses of Tachylite in construction industry include Cutting tool, Knives, Landscaping, Scrapers and that of Andesite include Cobblestones, Construction aggregate, For road aggregate.

More about Tachylite and Andesite

Here you can know more about Tachylite and Andesite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Tachylite and Andesite consists of mineral content and compound content. The mineral content of Tachylite includes Feldspar, Olivine and mineral content of Andesite includes Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Zircon. You can also check out the list of all Igneous Rocks. When we have to compare Tachylite vs Andesite, the texture, color and appearance plays an important role in determining the type of rock. Tachylite is available in black, dark brown colors whereas, Andesite is available in bluish - grey, grey, pink, yellow colors. Appearance of Tachylite is Glassy and that of Andesite is Dull and Soft. Properties of rock is another aspect for Tachylite vs Andesite. The hardness of Tachylite is 5.5 and that of Andesite is 7. The types of Tachylite are Volcanic glass whereas types of Andesite are Icelandite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Tachylite is vermilion while that of Andesite is white. The specific heat capacity of Tachylite is 0.56 kJ/Kg K and that of Andesite is 2.39 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Tachylite is heat resistant, impact resistant, wear resistant whereas Andesite is heat resistant, pressure resistant, wear resistant.