Tachylite

Websterite

Tachylite and Websterite

Tachylite

Websterite

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1 Definition

1.1 Definition

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

Websterite is ultramafic and ultrabasic rock that consists of roughly equal proportions of orthopyroxene and clinopyroxene. It is a special type of pyroxenite.

1.2 History

1.2.1 Origin

Iceland

Webster, North Carolina

1.2.2 Discoverer

Unknown

1.3 Etymology

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

From the town of Webster located in North Carolina

1.4 Class

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

1.5 Family

1.5.1 Group

Volcanic

Plutonic

1.6 Other Categories

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

Coarse Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Vitreous

Clastic, Granular, Phaneritic, Porphyritic

2.2 Color

Black, Dark Brown

Black to Grey, Bluish - Grey, Dark Greenish - Grey, Green, Light Greenish Grey

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Glassy

Layered, Banded, Veined and Shiny

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Interior Decoration

Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Interior Decoration

3.1.2 Exterior Uses

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

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

Cutting Tool, Knives, Landscaping, Scrapers

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers, Creating Artwork

Cemetery Markers, Commemorative Tablets, Creating Artwork, Laboratory bench tops, Jewelry, Sea Defence, Tombstones

4 Types

4.1 Types

Not Available

4.2 Features

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

Generally rough to touch, Is one of the oldest rock

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

4.3.2 Famous Monuments

Not Applicable

Data Not Available

4.3.3 Sculpture

Not Yet Used

4.3.4 Famous Sculptures

Not Applicable

Data Not Available

4.3.5 Pictographs

Used

Not Used

4.3.6 Petroglyphs

Used

Not Used

4.3.7 Figurines

Not Yet Used

4.4 Fossils

Absent

5 Formation

5.1 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.

Websterite can be formed as cumulates in ultramafic intrusions by accumulation of pyroxene crystals at the base of the lava chamber.

5.2 Composition

5.2.1 Mineral Content

Feldspar, Olivine

Amphibole, Augite, Bronzite, Chromite, Diopside, Enstatite, Garnet, Hornblende, Hypersthene, Magnetite, Pyroxene

5.2.2 Compound Content

Fe, Mg

Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

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

Burial Metamorphism, Impact Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Chemical Erosion, Sea Erosion, Water Erosion, Wind Erosion

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

6 Properties

6.1 Physical Properties

6.1.1 Hardness

5.57

1 7

6.1.2 Grain Size

Medium to Fine Coarse Grained

Coarse Grained

6.1.3 Fracture

Conchoidal

Uneven

6.1.4 Streak

Vermilion

White, Greenish White or Grey

6.1.5 Porosity

Less Porous

6.1.6 Luster

Resinous

Dull to Vitreous to Submetallic

6.1.7 Compressive Strength

206.00 N/mm²NA

0.15 450

6.1.8 Cleavage

Not Available

Irregular

6.1.9 Toughness

Not Available

6.1.10 Specific Gravity

2.43.2-3.5

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

3.058 g/cm³3.1-3.6 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

0.56 kJ/Kg KNA

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Impact Resistant, Pressure Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

Cambodia, Russia, South Korea

India, Russia

7.1.2 Africa

East Africa

South Africa

7.1.3 Europe

England, Germany, Hungary, Iceland, Scotland, Sweden

Germany, Greece, Italy, Scotland, Turkey

7.1.4 Others

Hawaii Islands

Greenland

7.2 Deposits in Western Continents

7.2.1 North America

USA

Canada, USA

7.2.2 South America

Not Yet Found

Brazil, Colombia, Venezuela

7.3 Deposits in Oceania Continent

7.3.1 Australia

Victoria

New Zealand, Queensland

All about Tachylite and Websterite Properties

Know all about Tachylite and Websterite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite and Websterite belong to Igneous Rocks.Texture of Tachylite is Vitreous whereas that of Websterite is Clastic, Granular, Phaneritic, Porphyritic. Tachylite appears Glassy and Websterite appears Layered, Banded, Veined and Shiny. The luster of Tachylite is resinous while that of Websterite is dull to vitreous to submetallic. Tachylite is available in black, dark brown colors whereas Websterite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Websterite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.