Boninite

Granophyre

Boninite and Granophyre

Boninite

Granophyre

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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

Discoverer

Unknown

Etymology

From its occurrence in the Izu-Bonin arc south of Japan

From German Granophyr, from Granit granite + Porphyr

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Aphanitic to Porphyritic

Granophyric

Color

Bluish - Grey, Brown, Green, Grey

Black, Grey, Orange, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

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

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

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

Basalt

Intermediate intrusive rock

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

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

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

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Burial Metamorphism, Impact Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Wind Erosion

Glacier Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

76-7

1 7

👆🏻

Grain Size

Fine Grained

Medium to Fine Coarse Grained

Fracture

Uneven

Streak

White

Porosity

Less Porous

Luster

Vitreous

Dull to Grainy with Sporadic parts Pearly and Vitreous

Compressive Strength

150.00 N/mm²175.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

1.1

Specific Gravity

2.5-2.82.6-2.7

0 8.4

👆🏻

Transparency

Opaque

Density

-9999 g/cm³2.6-2.8 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.79 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Others

Antarctica, Greenland

Deposits in Western Continents

North America

USA

Canada, USA

South America

Colombia, Uruguay

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

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, 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.