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Hornfels
Hornfels

Jaspillite
Jaspillite



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Hornfels
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Jaspillite

Hornfels vs Jaspillite

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
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks

History

Origin

New Zealand
Western Australia, Minnesota

Discoverer

Unknown
Unknown

Etymology

From German which means hornstone
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper

Class

Metamorphic Rocks
Sedimentary Rocks

Sub-Class

Durable Rock, Soft Rock
Durable Rock, Soft Rock

Family

Group

-
-

Other Categories

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

Texture

Texture

Granular, Platy
Banded, Trellis

Color

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

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull
Banded and Glassy

Uses

Architecture

Interior Uses

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

Exterior Uses

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

Other Architectural Uses

Curbing
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, Jewellery, Monuments

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork
Creating Artwork, Jewelry

Types

Types

Biotite hornfels
Algoma-type , Lake Superior-type and Superior-type

Features

Smooth to touch
Is one of the oldest rock

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Present

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.
Jaspillite is a type of sedimentary rock which is formed by the compaction and sedimentation of pieces of broken or weathered rocks and minerals.

Composition

Mineral Content

Andalusite
Coesite, Quartz, Sand

Compound Content

Fe, Mg
Fe, Iron(III) Oxide, Silicon Dioxide

Transformation

Metamorphism

Types of Metamorphism

-
-

Weathering

Types of Weathering

Biological Weathering
Biological Weathering, Chemical Weathering

Erosion

Types of Erosion

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

Properties

Physical Properties

Hardness

2-33
1 7
👆🏻

Grain Size

Fine Grained
Large and Coarse Grained

Fracture

Conchoidal
Conchoidal

Streak

-
White

Porosity

Highly Porous
Very Less Porous

Luster

Shiny
Earthy

Compressive Strength

5.80 N/mm2230.00 N/mm2
0.15 450
👆🏻

Cleavage

Perfect
-

Toughness

-
-

Specific Gravity

3.4-3.95.0-5.3
0 8.4
👆🏻

Transparency

Opaque
Translucent to Opaque

Density

0.25-0.30 g/cm30-5.7 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K3.20 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

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

Africa

Cameroon, East Africa, Tanzania, Western Africa
-

Europe

United Kingdom
Ukraine

Others

-
-

Deposits in Western Continents

North America

Canada, USA
Canada, USA

South America

Bolivia, Brazil, Colombia, Ecuador
Brazil

Deposits in Oceania Continent

Australia

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

Hornfels vs Jaspillite 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 Jaspillite 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. Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks. 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 Jaspillite information and Hornfels vs Jaspillite characteristics in the upcoming sections.

Hornfels vs Jaspillite 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 Jaspillite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Hornfels and Properties of Jaspillite. Learn more about Hornfels vs Jaspillite in the next section. The interior uses of Hornfels include Decorative aggregates, Flooring, Homes and Interior decoration whereas the interior uses of Jaspillite include Decorative aggregates and Interior decoration. Due to some exceptional properties of Hornfels and Jaspillite, they have various applications in construction industry. The uses of Hornfels in construction industry include For road aggregate, Roadstone and that of Jaspillite 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 Jaspillite

Here you can know more about Hornfels and Jaspillite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Hornfels and Jaspillite consists of mineral content and compound content. The mineral content of Hornfels includes Andalusite and mineral content of Jaspillite includes Coesite, Quartz, Sand. You can also check out the list of all Metamorphic Rocks. When we have to compare Hornfels vs Jaspillite, 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, Jaspillite is available in red, reddish brown colors. Appearance of Hornfels is Dull and that of Jaspillite is Banded and Glassy. Properties of rock is another aspect for Hornfels vs Jaspillite. The hardness of Hornfels is 2-3 and that of Jaspillite is 3. The types of Hornfels are Biotite hornfels whereas types of Jaspillite are Algoma-type , Lake Superior-type and Superior-type. 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 Jaspillite is white. The specific heat capacity of Hornfels is 0.84 kJ/Kg K and that of Jaspillite is 3.20 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 Jaspillite is heat resistant, impact resistant, wear resistant.