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Ganister and Pseudotachylite


Pseudotachylite and Ganister


Definition

Definition
A ganister is a hard, fine-grained quartzose sandstone or orthoquartzite which is basically used in the manufacture of silica brick typically used to line furnaces and is a type of sedimentary rocks.   
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.   

History
  
  

Origin
England   
USA   

Discoverer
Unknown   
Unknown   

Etymology
From gan′is-ter i.e a hard, close-grained siliceous stone, often forming the stratum which underlies a coal-seam   
From pseudo- +‎ tachylite, a glassy rock generated by frictional heat within faults.   

Class
Sedimentary Rocks   
Metamorphic Rocks   

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

Family
  
  

Group
Not Applicable   
Not Applicable   

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

Texture

Texture
Clastic, Granular, Rough   
Quench   

Color
Beige, Black, Brown, Colourless, Cream, Dark Brown, Green, Grey, Light Green, Light to Dark Grey, Pink, Red, White, Yellow   
Black, Brown, Colourless, Green, Grey, Pink, White   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
No   

Wind Resistant
Yes   
Yes   

Acid Resistant
No   
Yes   

Appearance
Rough   
Dull and Soft   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
Cement Manufacture, Construction Aggregate, for Road Aggregate, Production of Glass and Ceramics, Raw material for the manufacture of mortar   
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines   
Artifacts, Monuments   

Other Uses
  
  

Commercial Uses
An Oil and Gas Reservoir, In aquifers, Petroleum reservoirs, Soil Conditioner, Source of Magnesia (MgO), Tombstones   
Creating Artwork, Gemstone   

Types

Types
Not Available   
Not Available   

Features
Available in Lots of Colors and Patterns, Generally rough to touch, Very fine grained rock   
Host Rock for Lead   

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Used   
Not Yet Used   

Famous Sculptures
Data Not Available   
Not Applicable   

Pictographs
Not Used   
Not Used   

Petroglyphs
Not Used   
Not Used   

Figurines
Used   
Not Yet Used   

Fossils
Present   
Absent   

Formation

Formation
Ganisters are formed by the destruction of easily weathered minerals mainly feldspar, within the surface horizon of soil by soil-forming processes.   
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.   

Composition
  
  

Mineral Content
Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz   
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides   

Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide   
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism   

Weathering
Yes   
No   

Types of Weathering
Biological Weathering   
Not Applicable   

Erosion
Yes   
No   

Types of Erosion
Water Erosion, Wind Erosion   
Not Applicable   

Properties

Physical Properties
  
  

Hardness
6-7   
7   

Grain Size
Coarse or Fine   
Very fine-grained   

Fracture
Splintery   
Uneven   

Streak
White   
Light to dark brown   

Porosity
Highly Porous   
Less Porous   

Luster
Dull   
Vitreous   

Compressive Strength
95.00 N/mm2   
20
60.00 N/mm2   
25

Cleavage
Perfect   
Irregular   

Toughness
2.6   
Not Available   

Specific Gravity
2.2-2.8   
2.46-2.86   

Transparency
Opaque   
Transparent to Translucent   

Density
2.2-2.8 g/cm3   
2.7-2.9 g/cm3   

Thermal Properties
  
  

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

Resistance
Heat Resistant, Impact Resistant, Pressure Resistant   
Heat Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan   
South Korea   

Africa
Namibia, Nigeria, South Africa   
Western Africa   

Europe
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom   
Great Britain, Switzerland   

Others
Greenland   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, USA   
Not Yet Found   

South America
Brazil   
Not Yet Found   

Deposits in Oceania Continent
  
  

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

Summary >>
<< Reserves

All about Ganister and Pseudotachylite Properties

Know all about Ganister and Pseudotachylite properties here. All properties of rocks are important as they define the type of rock and its application. Ganister belongs to Sedimentary Rocks while Pseudotachylite belongs to Metamorphic Rocks.Texture of Ganister is Clastic, Granular, Rough whereas that of Pseudotachylite is Quench. Ganister appears Rough and Pseudotachylite appears Dull and Soft. The luster of Ganister is dull while that of Pseudotachylite is vitreous. Ganister and Pseudotachylite are available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Ganister are an oil and gas reservoir, in aquifers, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones and that of Pseudotachylite are creating artwork, gemstone.

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