Definition
Blueschist is a metamorphic rock which is generally blue in color and is formed under conditions of high pressure and low temperature
A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles
Origin
USA
European Foreland Basins
Discoverer
Edgar Bailey
Arnold H. Bouma
Etymology
From French schiste, Greek skhistos i.e. split
From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Group
Not Applicable
Not Applicable
Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Opaque Rock
Texture
Foliated
Mud-rich, Sandy
Color
Blue, Bluish - Grey, Purple, Shades of Blue
Black, Brown, Colourless, Green, Grey, Pink
Durability
Durable
Durable
Appearance
Dull and Banded
Dull and Banded
Interior Uses
Floor Tiles, Flooring, Homes, Hotels, Kitchens
Bathrooms, Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration
Exterior Uses
Garden Decoration, Office Buildings
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration
Other Architectural Uses
Not Yet Used
Curbing
Construction Industry
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts, Monuments, Sculpture
Artifacts, Monuments, Sculpture
Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling, Tombstones
Cemetery Markers, Creating Artwork
Types
Not Available
Not Available
Features
Has High structural resistance against erosion and climate, Very fine grained rock
High silica content, Host Rock for Lead
Archaeological Significance
Famous Monuments
Data Not Available
Data Not Available
Famous Sculptures
Data Not Available
Data Not Available
Formation
Blueschist forms due to the metamorphism of basalt and other rocks with similar composition at high pressures and low temperatures and approximately corresponding to a depth of 15 to 30 kilometers and 200 to 500 °C.
Turbidite is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. These particles then settle down and are subjected to high temperature and pressures hence forming Turbidite.
Mineral Content
Albite, Chlorite, Epidote, Garnet, Glaucophane, Lawsonite, Muscovite or Illite, Quartz
Coesite, Quartz, Sand
Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
CaO, Carbon Dioxide, MgO
Types of Metamorphism
Not Applicable
Not Applicable
Types of Weathering
Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion
Grain Size
Fine to Medium Grained
Fine to Coarse Grained
Fracture
Conchoidal
Splintery
Streak
White to Grey
White, Greenish White or Grey
Porosity
Highly Porous
Very Less Porous
Compressive Strength
Not Available
Cleavage
Slaty
Disjunctive
Specific Gravity
3-3.2
2.46-2.73
Transparency
Opaque
Opaque
Density
2.8-2.9 g/cm3
1.6-2.5 g/cm3
Specific Heat Capacity
Not Available
Resistance
Impact Resistant, Pressure Resistant
Heat Resistant
Deposits in Eastern Continents
Asia
Japan, Turkey
Not Yet Found
Africa
Egypt, Ethiopia, South Africa
Western Africa
Europe
France, Greece, Iceland
Austria, Belarus, Romania, Switzerland, United Kingdom
Others
Not Yet Found
Not Yet Found
Deposits in Western Continents
North America
USA
Canada, USA
South America
Not Yet Found
Brazil, Colombia
Deposits in Oceania Continent
Australia
New Zealand
New Zealand, Western Australia
All about Blueschist and Turbidite Properties
Know all about Blueschist and Turbidite properties here. All properties of rocks are important as they define the type of rock and its application. Blueschist belongs to Metamorphic Rocks while Turbidite belongs to Sedimentary Rocks.Texture of Blueschist is Foliated whereas that of Turbidite is Mud-rich, Sandy. Blueschist appears Dull and Banded and Turbidite appears Dull and Banded. The luster of Blueschist is dull while that of Turbidite is metallic. Blueschist is available in blue, bluish - grey, purple, shades of blue colors whereas Turbidite is available in black, brown, colourless, green, grey, pink colors. The commercial uses of Blueschist and Turbidite are cemetery markers, commemorative tablets, creating artwork, curling, tombstones.