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Tachylite
Tachylite

Eclogite
Eclogite



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Eclogite

Tachylite and Eclogite

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
Eclogite is an extreme metamorphic rock, formed by regional metamorphism of basalt rock under very high pressure and temperature
1.2 History
1.2.1 Origin
Iceland
Unknown
1.2.2 Discoverer
Unknown
René Just Haüy
1.3 Etymology
From German Tachylite, from tachy- + Greek lutos soluble, melting
From French, Greek eklogē selection with reference to the selective content of the rock + -ite1
1.4 Class
Igneous Rocks
Metamorphic Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Volcanic
Not Applicable
1.6 Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
2 Texture
2.1 Texture
Vitreous
Earthy
2.2 Color
Black, Dark Brown
Black, Brown, Colourless, Green, Grey, Pink, White
2.3 Maintenance
More
Less
2.4 Durability
Durable
Durable
2.4.1 Water Resistant
81% Igneous Rocks Rocks have it !
81% Metamorphic Rocks Rocks have it !
2.4.2 Scratch Resistant
86% Igneous Rocks Rocks have it !
65% Metamorphic Rocks Rocks have it !
2.4.3 Stain Resistant
66% Igneous Rocks Rocks have it !
42% Metamorphic Rocks Rocks have it !
2.4.4 Wind Resistant
49% Igneous Rocks Rocks have it !
19% Metamorphic Rocks Rocks have it !
2.4.5 Acid Resistant
48% Igneous Rocks Rocks have it !
15% Metamorphic Rocks Rocks have it !
2.5 Appearance
Glassy
Dull, Banded and Foilated
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Decorative Aggregates, Interior Decoration
Decorative Aggregates, Interior Decoration
3.1.2 Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
Paving Stone, Garden Decoration
3.1.3 Other Architectural Uses
Curbing
Curbing
3.2 Industry
3.2.1 Construction Industry
Cutting Tool, Knives, Landscaping, Scrapers
Not Yet Used
3.2.2 Medical Industry
Not Yet Used
In Chemical and Pharmaceutical Industry, Medicines and Cosmetics
3.3 Antiquity Uses
Artifacts
Artifacts
3.4 Other Uses
3.4.1 Commercial Uses
Cemetery Markers, Creating Artwork
Creating Artwork, Gemstone
4 Types
4.1 Types
Not Available
Not Available
4.2 Features
Available in Lots of Colors and Patterns, Clasts are smooth to touch, NA
Available in Lots of Colors and Patterns, Generally rough to touch, Is one of the oldest rock
4.3 Archaeological Significance
4.3.1 Monuments
Not Yet Used
Not Yet Used
4.3.2 Famous Monuments
Not Applicable
Not Applicable
4.3.3 Sculpture
Not Yet Used
Not Yet Used
4.3.4 Famous Sculptures
Not Applicable
Not Applicable
4.3.5 Pictographs
Used
Used
4.3.6 Petroglyphs
Used
Used
4.3.7 Figurines
Not Yet Used
Not Yet Used
4.4 Fossils
Absent
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.
Eclogite forms from high-pressure metamorphism of mafic igneous rocks mainly, basalt or gabbro as it plunges into the mantle in a subduction zone.
5.2 Composition
5.2.1 Mineral Content
Feldspar, Olivine
Amphibole, Coesite, Corundum, Dolomite, Garnet, Kyanite, Lawsonite, Paragonite, Phengite, Pyroxene, Quartz, Rutile, Zoisite
5.2.2 Compound Content
Fe, Mg
Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, Magnesium Carbonate, MgO, Sodium Oxide, Potassium, Sodium
5.3 Transformation
5.3.1 Metamorphism
97% Igneous Rocks Rocks have it !
50% Metamorphic Rocks Rocks have it !
5.3.2 Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
Not Applicable
5.3.3 Weathering
99% Igneous Rocks Rocks have it !
65% Metamorphic Rocks Rocks have it !
5.3.4 Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Mechanical Weathering
5.3.5 Erosion
92% Igneous Rocks Rocks have it !
77% Metamorphic Rocks Rocks have it !
5.3.6 Types of Erosion
Chemical Erosion, Sea Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Sea Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
5.5
3.5-4
6.1.2 Grain Size
Medium to Fine Coarse Grained
Fine Grained
6.1.3 Fracture
Conchoidal
Not Available
6.1.4 Streak
Vermilion
White
6.1.5 Porosity
Less Porous
Less Porous
6.1.6 Luster
Resinous
Subvitreous to Dull
6.1.7 Compressive Strength
What Is Flint
206.00 N/mm2
Rank: 8 (Overall)
Not Available
Rank: N/A (Overall)
What Is Obsidian
ADD ⊕
6.1.8 Cleavage
Not Available
Perfect
6.1.9 Toughness
Not Available
Not Available
6.1.10 Specific Gravity
2.4
2.86-2.87
6.1.11 Transparency
Opaque
Opaque
6.1.12 Density
3.058 g/cm3
3.2-3.6 g/cm3
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
What Is Banded ..
0.56 kJ/Kg K
Rank: 22 (Overall)
Not Available
Rank: N/A (Overall)
What Is Granulite
ADD ⊕
6.2.2 Resistance
Heat Resistant, Impact Resistant, Wear Resistant
Heat Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
Cambodia, Russia, South Korea
India, Kazakhstan, Kuwait, Russia, South Korea, Thailand, Turkey
7.1.2 Africa
East Africa
Ethiopia, Morocco, South Africa
7.1.3 Europe
England, Germany, Hungary, Iceland, Scotland, Sweden
France, Germany, Italy, Norway, Scotland
7.1.4 Others
Hawaii Islands
Greenland
7.2 Deposits in Western Continents
7.2.1 North America
USA
Canada, Costa Rica, Panama, USA
7.2.2 South America
Not Yet Found
Argentina, Brazil, Colombia, Ecuador
7.3 Deposits in Oceania Continent
7.3.1 Australia
Victoria
Central Australia, New Zealand, Queensland

All about Tachylite and Eclogite Properties

Know all about Tachylite and Eclogite properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Eclogite belongs to Metamorphic Rocks.Texture of Tachylite is Vitreous whereas that of Eclogite is Earthy. Tachylite appears Glassy and Eclogite appears Dull, Banded and Foilated. The luster of Tachylite is resinous while that of Eclogite is subvitreous to dull. Tachylite is available in black, dark brown colors whereas Eclogite is available in black, brown, colourless, green, grey, pink, white colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Eclogite are creating artwork, gemstone.