1 Definition
1.1 Definition
Blueschist is a metamorphic rock which is generally blue in color and is formed under conditions of high pressure and low temperature
Rhomb-porphyry is a porphyritic igneous rock with abundant wedge or lens shaped anorthoclase or feldspar phenocrysts
1.2 History
1.2.1 Origin
1.3.1 Discoverer
2.2 Etymology
From French schiste, Greek skhistos i.e. split
From Latin term that means purple
2.3 Class
Metamorphic Rocks
Igneous Rocks
2.3.2 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock
2.4 Family
2.4.1 Group
2.6 Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
3 Texture
3.1 Texture
Foliated
Aphanitic to Porphyritic
3.2 Color
Blue, Bluish - Grey, Purple, Shades of Blue
Black, Brown, Colourless, Green, Grey, Pink, White
3.4 Maintenance
3.5 Durability
3.6.2 Water Resistant
4.1.1 Scratch Resistant
4.2.1 Stain Resistant
4.3.1 Wind Resistant
4.3.3 Acid Resistant
4.4 Appearance
5 Uses
5.1 Architecture
5.1.1 Interior Uses
Floor Tiles, Flooring, Homes, Hotels, Kitchens
Decorative Aggregates, Homes, Interior Decoration
5.1.2 Exterior Uses
Garden Decoration, Office Buildings
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings
5.1.4 Other Architectural Uses
5.2 Industry
5.2.1 Construction Industry
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories
5.2.3 Medical Industry
Not Yet Used
Not Yet Used
5.3 Antiquity Uses
Artifacts, Monuments, Sculpture
Artifacts, Monuments, Sculpture, Small Figurines
5.4 Other Uses
5.4.1 Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling, Tombstones
An Oil and Gas Reservoir, As a Feed Additive for Livestock, Metallurgical Flux, Soil Conditioner, Source of Magnesia (MgO)
6 Types
6.1 Types
Not Available
Not Available
6.2 Features
Has High structural resistance against erosion and climate, Very fine grained rock
Host Rock for Lead
6.4 Archaeological Significance
6.4.1 Monuments
7.1.1 Famous Monuments
Data Not Available
Data Not Available
7.1.2 Sculpture
7.2.2 Famous Sculptures
Data Not Available
Data Not Available
7.2.3 Pictographs
7.2.5 Petroglyphs
7.3.2 Figurines
7.4 Fossils
8 Formation
8.1 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.
Rhomb-porphyry 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.
8.2 Composition
8.2.1 Mineral Content
Albite, Chlorite, Epidote, Garnet, Glaucophane, Lawsonite, Muscovite or Illite, Quartz
Alkali feldspar, Biotite, Plagioclase, Pyroxene
8.2.3 Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
CaO, Cl, MgO
8.3 Transformation
8.3.1 Metamorphism
8.3.3 Types of Metamorphism
Not Applicable
Impact Metamorphism
8.3.5 Weathering
8.3.6 Types of Weathering
Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
9.1.2 Erosion
9.1.3 Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Water Erosion
10 Properties
10.1 Physical Properties
10.1.1 Hardness
10.1.2 Grain Size
Fine to Medium Grained
Fine Grained
10.1.3 Fracture
10.1.4 Streak
10.1.5 Porosity
Highly Porous
Very Less Porous
10.1.6 Luster
10.1.7 Compressive Strength
10.1.14 Cleavage
10.1.15 Toughness
10.1.16 Specific Gravity
10.1.20 Transparency
10.1.21 Density
2.8-2.9 g/cm32.8-2.9 g/cm3
0
1400
10.2 Thermal Properties
10.2.1 Specific Heat Capacity
10.3.2 Resistance
Impact Resistant, Pressure Resistant
Heat Resistant, Pressure Resistant
11 Reserves
11.1 Deposits in Eastern Continents
11.1.1 Asia
Japan, Turkey
Not Yet Found
11.1.2 Africa
Egypt, Ethiopia, South Africa
Not Yet Found
11.1.3 Europe
France, Greece, Iceland
Bulgaria
11.1.4 Others
Not Yet Found
Not Yet Found
11.2 Deposits in Western Continents
11.2.1 North America
11.2.2 South America
Not Yet Found
Not Yet Found
11.3 Deposits in Oceania Continent
11.3.1 Australia
New Zealand
Not Yet Found