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Hornfels
Hornfels

Boninite
Boninite



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Hornfels
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Boninite

Hornfels vs Boninite

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Definition

Definition

Hornfels is a metamorphic rock formed by the contact between mudstone or other clay rich rock, and a hot igneous body, and represents a heat altered equivalent of the original rock
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

History

Origin

New Zealand
Japan

Discoverer

Unknown
Unknown

Etymology

From German which means hornstone
From its occurrence in the Izu-Bonin arc south of Japan

Class

Metamorphic Rocks
Igneous Rocks

Sub-Class

Durable Rock, Soft Rock
Durable Rock, Hard Rock

Family

Group

-
Volcanic

Other Categories

Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock

Texture

Texture

Granular, Platy
Aphanitic to Porphyritic

Color

Brown, Dark Greenish - Grey, Green, Reddish Brown
Bluish - Grey, Brown, Green, Grey

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull
Dull and Soft

Uses

Architecture

Interior Uses

Decorative Aggregates, Flooring, Homes, Interior Decoration
Decorative Aggregates, Homes, Kitchens

Exterior Uses

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

Other Architectural Uses

Curbing
-

Industry

Construction Industry

for Road Aggregate, 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

Medical Industry

-
-

Antiquity Uses

Artifacts, Monuments
Artifacts

Other Uses

Commercial Uses

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

Types

Types

Biotite hornfels
Basalt

Features

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

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Hornfels is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.
Boninite is a type of Igneous rock which is formed through the cooling and solidification of lava or existing rocks.

Composition

Mineral Content

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

Compound Content

Fe, Mg
Silicon Dioxide

Transformation

Metamorphism

Types of Metamorphism

-
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

Types of Weathering

Biological Weathering
Biological Weathering

Erosion

Types of Erosion

Chemical Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion, Wind Erosion

Properties

Physical Properties

Hardness

2-37
1 7
👆🏻

Grain Size

Fine Grained
Fine Grained

Fracture

Conchoidal
Uneven

Streak

-
White

Porosity

Highly Porous
Less Porous

Luster

Shiny
Vitreous

Compressive Strength

5.80 N/mm2150.00 N/mm2
0.15 450
👆🏻

Cleavage

Perfect
-

Toughness

-
1.1

Specific Gravity

3.4-3.92.5-2.8
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

0.25-0.30 g/cm3-9999 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.84 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand
-

Africa

Cameroon, East Africa, Tanzania, Western Africa
South Africa

Europe

United Kingdom
England, Finland, United Kingdom

Others

-
Antarctica, Greenland

Deposits in Western Continents

North America

Canada, USA
USA

South America

Bolivia, Brazil, Colombia, Ecuador
Colombia, Uruguay

Deposits in Oceania Continent

Australia

New South Wales, New Zealand, Queensland, Western Australia
New Zealand, Western Australia

Hornfels vs Boninite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Hornfels and Boninite Reserves. Hornfels is a metamorphic rock formed by the contact between mudstone or other clay rich rock, and a hot igneous body, and represents a heat altered equivalent of the original rock. 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. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Hornfels vs Boninite information and Hornfels vs Boninite characteristics in the upcoming sections.

Hornfels vs Boninite Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Hornfels vs Boninite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Hornfels and Properties of Boninite. Learn more about Hornfels vs Boninite in the next section. The interior uses of Hornfels include Decorative aggregates, Flooring, Homes and Interior decoration whereas the interior uses of Boninite include Decorative aggregates, Homes and Kitchens. Due to some exceptional properties of Hornfels and Boninite, they have various applications in construction industry. The uses of Hornfels in construction industry include For road aggregate, Roadstone and that of Boninite include 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.

More about Hornfels and Boninite

Here you can know more about Hornfels and Boninite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Hornfels and Boninite consists of mineral content and compound content. The mineral content of Hornfels includes Andalusite and mineral content of Boninite includes Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite. You can also check out the list of all Metamorphic Rocks. When we have to compare Hornfels vs Boninite, the texture, color and appearance plays an important role in determining the type of rock. Hornfels is available in brown, dark greenish - grey, green, reddish brown colors whereas, Boninite is available in bluish - grey, brown, green, grey colors. Appearance of Hornfels is Dull and that of Boninite is Dull and Soft. Properties of rock is another aspect for Hornfels vs Boninite. The hardness of Hornfels is 2-3 and that of Boninite is 7. The types of Hornfels are Biotite hornfels whereas types of Boninite are Basalt. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Hornfels is while that of Boninite is white. The specific heat capacity of Hornfels is 0.84 kJ/Kg K and that of Boninite is 0.84 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Hornfels is heat resistant, impact resistant, pressure resistant whereas Boninite is heat resistant, impact resistant, pressure resistant, wear resistant.