Home
Compare Rocks


Pseudotachylite vs Tonalite


Tonalite vs Pseudotachylite


Definition

Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.  
Tonalite is a coarse-grained plutonic rock consisting mainly of sodic plagioclase, quartz, and hornblende or other mafic minerals with phaneritic texture  

History
  
  

Origin
USA  
Tonale, Italy  

Discoverer
Unknown  
Warren Hamilton  

Etymology
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.  
From Tonale Pass, northern Italy, + -ite1  

Class
Metamorphic Rocks  
Igneous Rocks  

Sub-Class
Durable Rock, Hard Rock  
Durable Rock, Hard Rock  

Family
  
  

Group
-  
Plutonic  

Other Categories
Fine Grained Rock, Opaque Rock  
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock  

Texture

Texture
Quench  
Phaneritic  

Color
Black, Brown, Green, Grey, Pink, White  
Black, Brown, Light to Dark Grey, White  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
No  
Yes  

Wind Resistant
Yes  
No  

Acid Resistant
Yes  
Yes  

Appearance
Dull and Soft  
Banded and Foilated  

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Entryways, Interior Decoration  
Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration  

Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration  
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings  

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement  
As Dimension Stone, Cement Manufacture, Cobblestones, Construction Aggregate, for Road Aggregate  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Monuments  
Artifacts, Sculpture  

Other Uses
  
  

Commercial Uses
Creating Artwork, Gemstone  
Cemetery Markers, Creating Artwork  

Types

Types
Cataclastic rock  
Dacite  

Features
Host Rock for Lead  
Is one of the oldest rock, Typically speckled black and white.  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Pseudotachylite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.  
When alkali feldspar is extracted from granite, it changes to granitoid and later, it becomes tonalite with quartz as major mineral.  

Composition
  
  

Mineral Content
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides  
Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon  

Compound Content
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur  
NaCl, CaO, MgO, Silicon Dioxide  

Transformation
  
  

Metamorphism
Yes  
Yes  

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

Weathering
No  
Yes  

Types of Weathering
-  
Biological Weathering, Chemical Weathering, Mechanical Weathering  

Erosion
No  
Yes  

Types of Erosion
-  
Wind Erosion  

Properties

Physical Properties
  
  

Hardness
7  
6-7  

Grain Size
Very fine-grained  
Medium to Fine Coarse Grained  

Fracture
Uneven  
Conchoidal  

Streak
Light to dark brown  
Bluish Black  

Porosity
Less Porous  
Very Less Porous  

Luster
Vitreous  
Subvitreous to Dull  

Compressive Strength
60.00 N/mm2  
37
185.00 N/mm2  
17

Cleavage
-  
-  

Toughness
-  
2.1  

Specific Gravity
2.46-2.86  
2.86-3  

Transparency
Transparent to Translucent  
Opaque  

Density
2.7-2.9 g/cm3  
2.73 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.92 kJ/Kg K  
10
0.92 kJ/Kg K  
10

Resistance
Heat Resistant  
Heat Resistant, Pressure Resistant, Water Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
South Korea  
-  

Africa
Western Africa  
Egypt  

Europe
Great Britain, Switzerland  
Finland, Germany, Italy, Romania, Sweden, Turkey  

Others
-  
-  

Deposits in Western Continents
  
  

North America
-  
USA  

South America
-  
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru  

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia  
New Zealand, South Australia, Western Australia  

Definition >>
<< All

Pseudotachylite vs Tonalite 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 Pseudotachylite and Tonalite Reserves. Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. Tonalite is a coarse-grained plutonic rock consisting mainly of sodic plagioclase, quartz, and hornblende or other mafic minerals with phaneritic texture. 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 Pseudotachylite vs Tonalite information and Pseudotachylite vs Tonalite characteristics in the upcoming sections.

Compare Metamorphic Rocks

Pseudotachylite vs Tonalite 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. Pseudotachylite vs Tonalite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Pseudotachylite and Properties of Tonalite. Learn more about Pseudotachylite vs Tonalite in the next section. The interior uses of Pseudotachylite include Decorative aggregates, Entryways and Interior decoration whereas the interior uses of Tonalite include Decorative aggregates, Entryways, Flooring, Homes and Interior decoration. Due to some exceptional properties of Pseudotachylite and Tonalite, they have various applications in construction industry. The uses of Pseudotachylite in construction industry include As dimension stone, Cement manufacture, For road aggregate, Making natural cement and that of Tonalite include As dimension stone, Cement manufacture, Cobblestones, Construction aggregate, For road aggregate.

More about Pseudotachylite and Tonalite

Here you can know more about Pseudotachylite and Tonalite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Pseudotachylite and Tonalite consists of mineral content and compound content. The mineral content of Pseudotachylite includes Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides and mineral content of Tonalite includes Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon. You can also check out the list of all Metamorphic Rocks. When we have to compare Pseudotachylite vs Tonalite, the texture, color and appearance plays an important role in determining the type of rock. Pseudotachylite is available in black, brown, green, grey, pink, white colors whereas, Tonalite is available in black, brown, light to dark grey, white colors. Appearance of Pseudotachylite is Dull and Soft and that of Tonalite is Banded and Foilated. Properties of rock is another aspect for Pseudotachylite vs Tonalite. The hardness of Pseudotachylite is 7 and that of Tonalite is 6-7. The types of Pseudotachylite are Cataclastic rock whereas types of Tonalite are Dacite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Pseudotachylite is light to dark brown while that of Tonalite is bluish black. The specific heat capacity of Pseudotachylite is 0.92 kJ/Kg K and that of Tonalite is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Pseudotachylite is heat resistant whereas Tonalite is heat resistant, pressure resistant, water resistant.

Metamorphic Rocks

Metamorphic Rocks

» More Metamorphic Rocks

Compare Metamorphic Rocks

» More Compare Metamorphic Rocks