Boninite

Flint

Boninite and Flint

Boninite

Flint

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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

Flint is a hard type of sedimentary rock that produces a small piece of burning material when hit by steel

History

Origin

Japan

Discoverer

Unknown

Etymology

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

From Old English flint - a type of rock mainly known for high hardness and for giving off sparks when struck

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Aphanitic to Porphyritic

Banded, Rough

Color

Bluish - Grey, Brown, Green, Grey

Black, Brown, Green, Grey, Red, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull and Soft

Glassy or Pearly

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Kitchens

Decorative Aggregates, Homes, Interior Decoration

Exterior Uses

Garden Decoration, Office Buildings

As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone

Other Architectural Uses

Curbing

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

Arrowheads, Cutting Tool, Spear Points

Medical Industry

Antiquity Uses

Artifacts

Other Uses

Commercial Uses

An Oil and Gas Reservoir, Cemetery Markers, Creating Artwork, Soil Conditioner, Source of Magnesia (MgO)

Creating Artwork, Gemstone, In fire-starting tools, Manufacture of tools, Metallurgical Flux, Jewelry, To ignite fire, Used in flintlock firearms

Types

Basalt

Chert and Jasper

Features

Available in Lots of Colors and Patterns, High Mg content, Is one of the oldest rock

Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

Formation

Boninite is a type of Igneous rock which is formed through the cooling and solidification of lava or existing rocks.

Flint is formed by the decomposition and compaction of various organisms such as sponges and diatoms under the water.

Composition

Mineral Content

Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite

Silicon

Compound Content

Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Water Erosion

Properties

Physical Properties

Hardness

1 7

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Grain Size

Fine Grained

Very fine-grained

Fracture

Uneven

Conchoidal

Streak

White

Porosity

Less Porous

Highly Porous

Luster

Vitreous

Compressive Strength

150.00 N/mm²450.00 N/mm²

0.15 450

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Cleavage

Toughness

1.1

1.5

Specific Gravity

2.5-2.82.5-2.8

0 8.4

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Transparency

Opaque

Translucent to Opaque

Density

-9999 g/cm³2.7-2.71 g/cm³

0 1400

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Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.74 kJ/Kg K

0.14 3.2

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Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Azerbaijan, China, Russia

Africa

South Africa

Europe

England, Finland, United Kingdom

Austria, Belgium, Cyprus, Denmark, France, Germany, Italy, Malta, Netherlands, Poland, Portugal, Romania, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom

Others

Antarctica, Greenland

Deposits in Western Continents

North America

USA

South America

Colombia, Uruguay

Bolivia

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

New Zealand, South Australia

All about Boninite and Flint Properties

Know all about Boninite and Flint properties here. All properties of rocks are important as they define the type of rock and its application. Boninite belongs to Igneous Rocks while Flint belongs to Sedimentary Rocks.Texture of Boninite is Aphanitic to Porphyritic whereas that of Flint is Banded, Rough. Boninite appears Dull and Soft and Flint appears Glassy or Pearly. The luster of Boninite and Flint is vitreous. Boninite is available in bluish - grey, brown, green, grey colors whereas Flint is available in black, brown, green, grey, red, 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 Flint are creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms.