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Foidolite
Foidolite

Tachylite
Tachylite



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Foidolite and Tachylite

1 Definition
1.1 Definition
Foidolite is a rare type of coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%
Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt
1.2 History
1.2.1 Origin
Unknown
Iceland
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
From the mineral feldspathoid which is the main content of rock
From German Tachylite, from tachy- + Greek lutos soluble, melting
1.4 Class
Igneous Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Plutonic
Volcanic
1.6 Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
2 Texture
2.1 Texture
Earthy
Vitreous
2.2 Color
Black, Brown, Colourless, Green, Grey, Pink, White
Black, Dark Brown
2.3 Maintenance
Less
More
2.4 Durability
Durable
Durable
2.4.1 Water Resistant
81% Igneous Rocks Rocks have it !
81% Igneous Rocks Rocks have it !
2.4.2 Scratch Resistant
86% Igneous Rocks Rocks have it !
86% Igneous Rocks Rocks have it !
2.4.3 Stain Resistant
66% Igneous Rocks Rocks have it !
66% Igneous Rocks Rocks have it !
2.4.4 Wind Resistant
49% Igneous Rocks Rocks have it !
49% Igneous Rocks Rocks have it !
2.4.5 Acid Resistant
48% Igneous Rocks Rocks have it !
48% Igneous Rocks Rocks have it !
2.5 Appearance
Dull
Glassy
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
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
3.1.3 Other Architectural Uses
Curbing
Curbing
3.2 Industry
3.2.1 Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate
Cutting Tool, Knives, Landscaping, Scrapers
3.2.2 Medical Industry
Taken as a Supplement for Calcium or Magnesium
Not Yet Used
3.3 Antiquity Uses
Artifacts, Monuments, Sculpture
Artifacts
3.4 Other Uses
3.4.1 Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork
Cemetery Markers, Creating Artwork
4 Types
4.1 Types
Not Available
Not Available
4.2 Features
Host Rock for Lead
Available in Lots of Colors and Patterns, Clasts are smooth to touch, NA
4.3 Archaeological Significance
4.3.1 Monuments
Used
Not Yet Used
4.3.2 Famous Monuments
Data Not Available
Not Applicable
4.3.3 Sculpture
Used
Not Yet Used
4.3.4 Famous Sculptures
Data Not Available
Not Applicable
4.3.5 Pictographs
Used
Used
4.3.6 Petroglyphs
Used
Used
4.3.7 Figurines
Used
Not Yet Used
4.4 Fossils
Absent
Absent
5 Formation
5.1 Formation
Foidolites 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.
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.
5.2 Composition
5.2.1 Mineral Content
Amphibole, Biotite, Feldspar, Olivine, Plagioclase, Pyroxene
Feldspar, Olivine
5.2.2 Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO
Fe, Mg
5.3 Transformation
5.3.1 Metamorphism
97% Igneous Rocks Rocks have it !
97% Igneous Rocks Rocks have it !
5.3.2 Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
5.3.3 Weathering
99% Igneous Rocks Rocks have it !
99% Igneous Rocks Rocks have it !
5.3.4 Types of Weathering
Not Applicable
Biological Weathering, Chemical Weathering, Mechanical Weathering
5.3.5 Erosion
92% Igneous Rocks Rocks have it !
92% Igneous Rocks Rocks have it !
5.3.6 Types of Erosion
Not Applicable
Chemical Erosion, Sea Erosion, Water Erosion, Wind Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
1.5
5.5
6.1.2 Grain Size
Medium to Fine Coarse Grained
Medium to Fine Coarse Grained
6.1.3 Fracture
Conchoidal
Conchoidal
6.1.4 Streak
White
Vermilion
6.1.5 Porosity
Very Less Porous
Less Porous
6.1.6 Luster
Subvitreous to Dull
Resinous
6.1.7 Compressive Strength
What Is Flint
Not Available
Rank: N/A (Overall)
206.00 N/mm2
Rank: 8 (Overall)
What Is Obsidian
ADD ⊕
6.1.8 Cleavage
Perfect
Not Available
6.1.9 Toughness
Not Available
Not Available
6.1.10 Specific Gravity
2.86
2.4
6.1.11 Transparency
Translucent
Opaque
6.1.12 Density
Not Available
3.058 g/cm3
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
What Is Banded ..
Not Available
Rank: N/A (Overall)
0.56 kJ/Kg K
Rank: 22 (Overall)
What Is Granulite
ADD ⊕
6.2.2 Resistance
Heat Resistant, Wear Resistant
Heat Resistant, Impact Resistant, Wear Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
Russia
Cambodia, Russia, South Korea
7.1.2 Africa
South Africa, Western Africa
East Africa
7.1.3 Europe
Not Yet Found
England, Germany, Hungary, Iceland, Scotland, Sweden
7.1.4 Others
Not Yet Found
Hawaii Islands
7.2 Deposits in Western Continents
7.2.1 North America
Canada, USA
USA
7.2.2 South America
Not Yet Found
Not Yet Found
7.3 Deposits in Oceania Continent
7.3.1 Australia
Central Australia, Western Australia
Victoria

All about Foidolite and Tachylite Properties

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