Definition
Origin
Discoverer
Etymology
Class
Sub-Class
Group
Other Categories
Texture
Color
Maintenance
Durability
Water Resistant
Scratch Resistant
Stain Resistant
Wind Resistant
Acid Resistant
Appearance
Interior Uses
Exterior Uses
Other Architectural Uses
Construction Industry
Medical Industry
Antiquity Uses
Commercial Uses
Types
Features
Monuments
Famous Monuments
Sculpture
Famous Sculptures
Pictographs
Petroglyphs
Figurines
Fossils
Formation
Mineral Content
Compound Content
Metamorphism
Types of Metamorphism
Weathering
Types of Weathering
Erosion
Types of Erosion
Hardness
Grain Size
Fracture
Streak
Porosity
Luster
Compressive Strength
Cleavage
Toughness
Specific Gravity
Transparency
Density
Specific Heat Capacity
Resistance
Asia
Africa
Europe
Others
North America
South America
Australia
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
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
Great Britain, Switzerland
Central Australia, Western Australia
Harzburgite is a plutonic rock of the peridotite group consisting largely of orthopyroxene and olivine
From the name of a town in Harzburg, Germany
Durable Rock, Medium Hardness Rock
Coarse Grained Rock, Opaque Rock
Decorative Aggregates, Homes, Interior Decoration
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
As Dimension Stone, Cobblestones
Artifacts, Monuments, Sculpture, Small Figurines
Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds
Constitutes upper part of the Earth's mantle, Generally rough to touch, Is one of the oldest rock
Harzburgite 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.
Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene
Ca, Fe, Mg, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide
Chemical Weathering, Mechanical Weathering
Chemical Erosion, Sea Erosion
Heat Resistant, Pressure Resistant, Wear Resistant
Hawaii Islands, Mid-Atlantic Ridge