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
Tonalite is a coarse-grained plutonic rock consisting mainly of sodic plagioclase, quartz, and hornblende or other mafic minerals with phaneritic texture
1.2 History
1.2.1 Origin
1.2.2 Discoverer
1.3 Etymology
From German Tachylite, from tachy- + Greek lutos soluble, melting
From Tonale Pass, northern Italy, + -ite1
1.4 Class
Igneous Rocks
Igneous Rocks
1.4.2 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
1.5 Family
1.5.1 Group
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
2.2 Color
Black, Dark Brown
Black, Brown, Light to Dark Grey, White
2.3 Maintenance
2.4 Durability
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
Banded and Foilated
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Decorative Aggregates, Interior Decoration
Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration
3.1.2 Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings
3.1.3 Other Architectural Uses
3.2 Industry
3.2.1 Construction Industry
Cutting Tool, Knives, Landscaping, Scrapers
As Dimension Stone, Cement Manufacture, Cobblestones, Construction Aggregate, for Road Aggregate
3.2.2 Medical Industry
Not Yet Used
Not Yet Used
3.3 Antiquity Uses
Artifacts
Artifacts, Sculpture
3.4 Other Uses
3.4.1 Commercial Uses
Cemetery Markers, Creating Artwork
Cemetery Markers, Creating Artwork
4 Types
4.1 Types
4.2 Features
Available in Lots of Colors and Patterns, Clasts are smooth to touch, NA
Is one of the oldest rock, Typically speckled black and white.
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
4.3.4 Famous Sculptures
Not Applicable
Data Not Available
4.3.5 Pictographs
4.3.6 Petroglyphs
4.3.7 Figurines
4.4 Fossils
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.
When alkali feldspar is extracted from granite, it changes to granitoid and later, it becomes tonalite with quartz as major mineral.
5.2 Composition
5.2.1 Mineral Content
Feldspar, Olivine
Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon
5.2.2 Compound Content
Fe, Mg
NaCl, CaO, MgO, Silicon Dioxide
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, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
5.3.3 Weathering
5.3.4 Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical 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
Wind Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
6.1.7 Grain Size
Medium to Fine Coarse Grained
Medium to Fine Coarse Grained
6.1.8 Fracture
6.1.9 Streak
6.1.10 Porosity
Less Porous
Very Less Porous
6.1.11 Luster
Resinous
Subvitreous to Dull
6.1.12 Compressive Strength
7.1.4 Cleavage
Not Available
Not Available
7.2.2 Toughness
7.2.4 Specific Gravity
7.3.2 Transparency
7.3.3 Density
3.058 g/cm32.73 g/cm3
0
1400
7.4 Thermal Properties
7.4.1 Specific Heat Capacity
0.56 kJ/Kg K0.92 kJ/Kg K
0.14
3.2
7.4.2 Resistance
Heat Resistant, Impact Resistant, Wear Resistant
Heat Resistant, Pressure Resistant, Water Resistant
8 Reserves
8.1 Deposits in Eastern Continents
8.1.1 Asia
Cambodia, Russia, South Korea
Not Yet Found
8.1.2 Africa
8.1.3 Europe
England, Germany, Hungary, Iceland, Scotland, Sweden
Finland, Germany, Italy, Romania, Sweden, Turkey
8.1.4 Others
Hawaii Islands
Not Yet Found
8.2 Deposits in Western Continents
8.2.1 North America
8.2.2 South America
Not Yet Found
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru
8.3 Deposits in Oceania Continent
8.3.1 Australia
Victoria
New Zealand, South Australia, Western Australia