Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.
From pseudo- + tachylite, a glassy rock generated by frictional heat within faults.
Fine Grained Rock, Opaque Rock
Black, Brown, Green, Grey, Pink, White
Decorative Aggregates, Entryways, Interior Decoration
As Building Stone, As Facing Stone, Garden Decoration
As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement
Creating Artwork, Gemstone
Archaeological Significance
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.
Iron Oxides, Pyroxene, Quartz, Stishovite, Sulfides
Carbon Dioxide, Silicon Dioxide, Sulfur Dioxide, Sulphur
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism
Transparent to Translucent
Deposits in Eastern Continents
Great Britain, Switzerland
Deposits in Western Continents
Deposits in Oceania Continent
Central Australia, Western Australia
Information about Pseudotachylite
Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Pseudotachylite Uses. We have provided you with all information about Pseudotachylite rock here. Very fine grained fault rock which is composed of glassy matrix that often contains inclusions of wall-rock fragments.. Pseudotachylite is available in black, brown, green, grey, pink, white colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Pseudotachylite is light to dark brown. Get to know more about Pseudotachylite rock and characteristics of Pseudotachylite rock in the next sections.