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Hornfels
Hornfels

Evaporite
Evaporite



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Hornfels
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Evaporite

Hornfels vs Evaporite

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
A water-soluble mineral sediment resulting from concentration and crystallization by evaporation from an aqueous solution

History

Origin

New Zealand
USA

Discoverer

Unknown
Usiglio

Etymology

From German which means hornstone
From a sediment left after the evaporation

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, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Texture

Granular, Platy
Earthy

Color

Brown, Dark Greenish - Grey, Green, Reddish Brown
Green, Grey, Silver, White

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull
Glassy, Vesicular and Foilated

Uses

Architecture

Interior Uses

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

Exterior Uses

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

-
Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts, Monuments
Artifacts

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork
Used in the manufacture of Ceramic Powder, Used in the preparation of Sulfuric Acid and Silicon Diborite

Types

Types

Biotite hornfels
Sedimentary rock

Features

Smooth to touch
Generally rough to touch, Splintery, Veined

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.
Evaporite is water-soluble mineral sediment which forms from concentration and crystallization by evaporation from an aqueous solution.

Composition

Mineral Content

Andalusite
Calcite, Cancrinite, Gypsum, Kyanite, Magnetite

Compound Content

Fe, Mg
CaMg(CO3)2, CaO, Calcium Sulfate, KCl, MgO, NaCl

Transformation

Metamorphism

Types of Metamorphism

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

Weathering

Types of Weathering

Biological Weathering
-

Erosion

Types of Erosion

Chemical Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
-

Properties

Physical Properties

Hardness

2-32-3
1 7
👆🏻

Grain Size

Fine Grained
Medium to Fine Coarse Grained

Fracture

Conchoidal
Conchoidal

Streak

-
White

Porosity

Highly Porous
Less Porous

Luster

Shiny
Subvitreous to Dull

Compressive Strength

5.80 N/mm2225.00 N/mm2
0.15 450
👆🏻

Cleavage

Perfect
Perfect

Toughness

-
-

Specific Gravity

3.4-3.92.86-2.99
0 8.4
👆🏻

Transparency

Opaque
Translucent

Density

0.25-0.30 g/cm32.8-2.9 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.92 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant
Heat Resistant, Pressure 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
-

Europe

United Kingdom
United Kingdom

Others

-
-

Deposits in Western Continents

North America

Canada, USA
USA

South America

Bolivia, Brazil, Colombia, Ecuador
Colombia, Paraguay

Deposits in Oceania Continent

Australia

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

Hornfels vs Evaporite 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 Evaporite 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. A water-soluble mineral sediment resulting from concentration and crystallization by evaporation from an aqueous solution. 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 Evaporite information and Hornfels vs Evaporite characteristics in the upcoming sections.

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

Here you can know more about Hornfels and Evaporite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Hornfels and Evaporite consists of mineral content and compound content. The mineral content of Hornfels includes Andalusite and mineral content of Evaporite includes Calcite, Cancrinite, Gypsum, Kyanite, Magnetite. You can also check out the list of all Metamorphic Rocks. When we have to compare Hornfels vs Evaporite, 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, Evaporite is available in green, grey, silver, white colors. Appearance of Hornfels is Dull and that of Evaporite is Glassy, Vesicular and Foilated. Properties of rock is another aspect for Hornfels vs Evaporite. Hardness of Hornfels and Evaporite is 2-3. The types of Hornfels are Biotite hornfels whereas types of Evaporite are Sedimentary rock. 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 Evaporite is white. The specific heat capacity of Hornfels is 0.84 kJ/Kg K and that of Evaporite is 0.92 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 Evaporite is heat resistant, pressure resistant.