Boninite and Granophyre
Definition
Definition
Boninite is a mafic extrusive rock which is high in magnesium and silica content, formed in fore-arc environments, typically during the early stages of subduction
Granophyre is a type of granitic rock which consists of intergrown feldspar and quartz crystals in a medium to fine grained groundmass
History
Origin
Japan
Unknown
Discoverer
Unknown
Unknown
Etymology
From its occurrence in the Izu-Bonin arc south of Japan
From German Granophyr, from Granit granite + Porphyr
Class
Igneous Rocks
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Hard Rock
Family
Group
Volcanic
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Texture
Texture
Aphanitic to Porphyritic
Granophyric
Color
Bluish - Grey, Brown, Colourless, Green, Grey
Black, Grey, Orange, Pink, White
Maintenance
Less
More
Durability
Durable
Durable
Water Resistant
No
Yes
Scratch Resistant
Yes
Yes
Stain Resistant
Yes
Yes
Wind Resistant
Yes
Yes
Acid Resistant
No
No
Appearance
Dull and Soft
Veined or Pebbled
Uses
Architecture
Interior Uses
Decorative Aggregates, Homes, Kitchens
Bathrooms, Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Interior Decoration, Kitchens, Stair Treads
Exterior Uses
Garden Decoration, Office Buildings
As Building Stone, As Facing Stone, Bridges, Garden Decoration, Office Buildings, Paving Stone
Other Architectural Uses
Not Yet Used
Not Yet Used
Industry
Construction Industry
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
As Dimension Stone
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts
Artifacts, Monuments, Sculpture, Small Figurines
Other Uses
Commercial Uses
An Oil and Gas Reservoir, Cemetery Markers, Creating Artwork, Soil Conditioner, Source of Magnesia (MgO)
Curling, Gemstone, Laboratory bench tops, Tombstones
Types
Types
Not Available
Not Available
Features
Available in Lots of Colors and Patterns, High Mg content, Is one of the oldest rock
Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock
Archaeological Significance
Monuments
Not Yet Used
Used
Famous Monuments
Not Applicable
Data Not Available
Sculpture
Not Yet Used
Used
Famous Sculptures
Not Applicable
Data Not Available
Pictographs
Not Used
Not Used
Petroglyphs
Not Used
Not Used
Figurines
Not Yet Used
Used
Fossils
Absent
Absent
Formation
Formation
Boninite is a type of Igneous rock which is formed through the cooling and solidification of lava or existing rocks.
Granophyre 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.
Composition
Mineral Content
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite
Hornblade, Orthoclase, Plagioclase, Quartz
Compound Content
Silicon Dioxide
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
Transformation
Metamorphism
Yes
Yes
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism
Burial Metamorphism, Impact Metamorphism
Weathering
Yes
Yes
Types of Weathering
Biological Weathering
Biological Weathering
Erosion
Yes
Yes
Types of Erosion
Chemical Erosion, Coastal Erosion, Wind Erosion
Glacier Erosion, Sea Erosion, Wind Erosion
Properties
Physical Properties
Hardness
7
6-7
Grain Size
Fine Grained
Medium to Fine Coarse Grained
Fracture
Uneven
Not Available
Streak
White
White
Porosity
Less Porous
Less Porous
Luster
Vitreous
Dull to Grainy with Sporadic parts Pearly and Vitreous
Compressive Strength
Not Available
175.00 N/mm2
13
Cleavage
Not Available
Not Available
Toughness
1.1
Not Available
Specific Gravity
2.5-2.8
2.6-2.7
Transparency
Opaque
Opaque
Density
Not Available
2.6-2.8 g/cm3
Thermal Properties
Specific Heat Capacity
Not Available
0.79 kJ/Kg K
16
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Wear Resistant
Reserves
Deposits in Eastern Continents
Asia
Not Available
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
Africa
South Africa
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
Europe
England, Finland, United Kingdom
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela
Others
Antarctica, Greenland
Not Yet Found
Deposits in Western Continents
North America
USA
Canada, USA
South America
Colombia, Uruguay
Not Yet Found
Deposits in Oceania Continent
Australia
New Zealand, Western Australia
Not Yet Found
All about Boninite and Granophyre Properties
Know all about Boninite and Granophyre properties here. All properties of rocks are important as they define the type of rock and its application. Boninite and Granophyre belong to Igneous Rocks.Texture of Boninite is Aphanitic to Porphyritic whereas that of Granophyre is Granophyric. Boninite appears Dull and Soft and Granophyre appears Veined or Pebbled. The luster of Boninite is vitreous while that of Granophyre is dull to grainy with sporadic parts pearly and vitreous. Boninite is available in bluish - grey, brown, colourless, green, grey colors whereas Granophyre is available in black, grey, orange, pink, white colors. The commercial uses of Boninite are an oil and gas reservoir, cemetery markers, creating artwork, soil conditioner, source of magnesia (mgo) and that of Granophyre are curling, gemstone, laboratory bench tops, tombstones.
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