Definition
Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.
  
Conglomerate is a sedimentary rock which forms from rounded gravel and boulder sized clasts which are cemented together in a matrix
  
History
  
  
Origin
USA
  
Italy
  
Discoverer
Unknown
  
Unknown
  
Etymology
From pseudo- + tachylite, a glassy rock generated by frictional heat within faults.
  
From Latin conglomeratus, to roll together, i.e. from com together + glomerare to gather into a ball, from glomus (genitive glomeris) a ball
  
Class
Metamorphic Rocks
  
Sedimentary Rocks
  
Sub-Class
Durable Rock, Hard Rock
  
Durable Rock, Soft Rock
  
Family
  
  
Group
Not Applicable
  
Not Applicable
  
Other Categories
Fine Grained Rock, Opaque Rock
  
Coarse Grained Rock, Opaque Rock
  
Texture
Quench
  
Clastic
  
Color
Black, Brown, Colourless, Green, Grey, Pink, White
  
Beige, Black, Brown, Buff, Light to Dark Grey, Orange, Rust, White, Yellow
  
Maintenance
Less
  
More
  
Durability
Durable
  
Durable
  
Water Resistant
Yes
  
No
  
Scratch Resistant
Yes
  
Yes
  
Stain Resistant
No
  
No
  
Wind Resistant
Yes
  
No
  
Acid Resistant
Yes
  
No
  
Appearance
Dull and Soft
  
Shiny and Rounded
  
Architecture
  
  
Interior Uses
Decorative Aggregates, Entryways, Interior Decoration
  
Decorative Aggregates, Floor Tiles, Homes
  
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration
  
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Roof Tiles
  
Other Architectural Uses
Curbing
  
Curbing
  
Industry
  
  
Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement
  
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Roadstone
  
Medical Industry
Not Yet Used
  
Not Yet Used
  
Antiquity Uses
Artifacts, Monuments
  
Artifacts, Monuments, Sculpture, Small Figurines
  
Other Uses
  
  
Commercial Uses
Creating Artwork, Gemstone
  
Cemetery Markers, In aquifers, Tombstones
  
Types
Not Available
  
Not Available
  
Features
Host Rock for Lead
  
Clasts are smooth to touch, Is one of the oldest rock, Matrix variable
  
Archaeological Significance
  
  
Monuments
Used
  
Used
  
Famous Monuments
Data Not Available
  
Data Not Available
  
Sculpture
Not Yet Used
  
Used
  
Famous Sculptures
Not Applicable
  
Data Not Available
  
Pictographs
Not Used
  
Used
  
Petroglyphs
Not Used
  
Used
  
Figurines
Not Yet Used
  
Used
  
Fossils
Absent
  
Present
  
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.
  
Conglomerate forms where sediments consisting mainly of pebble and cobble-size clasts at least two millimeters in diameter starts accumulating.
  
Composition
  
  
Mineral Content
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides
  
Clay, Sand, Silica, Silt
  
Compound Content
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur
  
NaCl, CaO
  
Transformation
  
  
Metamorphism
Yes
  
Yes
  
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism
  
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism
  
Weathering
No
  
No
  
Types of Weathering
Not Applicable
  
Not Applicable
  
Erosion
No
  
No
  
Types of Erosion
Not Applicable
  
Chemical Erosion, Coastal Erosion
  
Physical Properties
  
  
Hardness
7
  
2-3
  
Grain Size
Very fine-grained
  
Coarse Grained
  
Fracture
Uneven
  
Uneven
  
Streak
Light to dark brown
  
White
  
Porosity
Less Porous
  
Highly Porous
  
Luster
Vitreous
  
Dull
  
Compressive Strength
60.00 N/mm
2
  
25
Not Available
  
Cleavage
Irregular
  
Non-Existent
  
Toughness
Not Available
  
Not Available
  
Specific Gravity
2.46-2.86
  
2.86-2.88
  
Transparency
Transparent to Translucent
  
Opaque
  
Density
2.7-2.9 g/cm3
  
1.7-2.3 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
0.92 kJ/Kg K
  
10
0.92 kJ/Kg K
  
10
Resistance
Heat Resistant
  
Heat Resistant
  
Deposits in Eastern Continents
  
  
Asia
South Korea
  
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan
  
Africa
Western Africa
  
Namibia, Nigeria, South Africa
  
Europe
Great Britain, Switzerland
  
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom
  
Others
Not Yet Found
  
Greenland
  
Deposits in Western Continents
  
  
North America
Not Yet Found
  
Canada, USA
  
South America
Not Yet Found
  
Brazil
  
Deposits in Oceania Continent
  
  
Australia
Central Australia, Western Australia
  
New South Wales, New Zealand
  
All about Pseudotachylite and Conglomerate Properties
Know all about Pseudotachylite and Conglomerate properties here. All properties of rocks are important as they define the type of rock and its application. Pseudotachylite belongs to Metamorphic Rocks while Conglomerate belongs to Sedimentary Rocks.Texture of Pseudotachylite is Quench whereas that of Conglomerate is Clastic. Pseudotachylite appears Dull and Soft and Conglomerate appears Shiny and Rounded. The luster of Pseudotachylite is vitreous while that of Conglomerate is dull. Pseudotachylite is available in black, brown, colourless, green, grey, pink, white colors whereas Conglomerate is available in beige, black, brown, buff, light to dark grey, orange, rust, white, yellow colors. The commercial uses of Pseudotachylite are creating artwork, gemstone and that of Conglomerate are cemetery markers, in aquifers, tombstones.