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Migmatite
Migmatite

Hornfels
Hornfels



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Migmatite
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Hornfels

Migmatite vs Hornfels

Definition

Definition

Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components
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

History

Origin

Southern Alps, France
New Zealand

Discoverer

Jakob Sederholm
Unknown

Etymology

From the Greek word migma which means a mixture
From German which means hornstone

Class

Metamorphic Rocks
Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock

Family

Group

-
-

Other Categories

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

Texture

Texture

Foliated
Granular, Platy

Color

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

Maintenance

More
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull, Banded and Foilated
Dull

Uses

Architecture

Interior Uses

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

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement
for Road Aggregate, Roadstone

Medical Industry

-
-

Antiquity Uses

Artifacts
Artifacts, Monuments

Other Uses

Commercial Uses

Cemetery Markers, Jewelry, Tombstones, Used to manufracture paperweights and bookends
Cemetery Markers, Commemorative Tablets, Creating Artwork

Types

Types

Diatexites and Metatexites
Biotite hornfels

Features

Generally rough to touch, Is one of the oldest rock
Smooth to touch

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

Migmatites form by high temperature regional and thermal metamorphism of protolith rocks where rocks melt partially due to high temperature.
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.

Composition

Mineral Content

Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon
Andalusite

Compound Content

Aluminium Oxide, NaCl, CaO, Carbon Dioxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
Fe, Mg

Transformation

Metamorphism

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism
-

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering

Erosion

Types of Erosion

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

Properties

Physical Properties

Hardness

5.5-6.52-3
1 7
👆🏻

Grain Size

Medium to Fine Coarse Grained
Fine Grained

Fracture

Irregular
Conchoidal

Streak

White
-

Porosity

Very Less Porous
Highly Porous

Luster

Dull to Pearly to Subvitreous
Shiny

Compressive Strength

120.00 N/mm25.80 N/mm2
0.15 450
👆🏻

Cleavage

-
Perfect

Toughness

1.2
-

Specific Gravity

2.65-2.753.4-3.9
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

-9999 g/cm30.25-0.30 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.79 kJ/Kg K0.84 kJ/Kg K
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

China, India, Iran, Iraq, Kazakhstan, Kyrgyzstan, Mongolia, Russia
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand

Africa

Cameroon, Ethiopia, Ghana, Kenya, Madagascar, Morocco, Mozambique, Namibia, Nigeria, Tanzania, Togo
Cameroon, East Africa, Tanzania, Western Africa

Europe

Albania, Austria, Bosnia and Herzegovina, Finland, France, Georgia, Germany, Hungary, Italy, Kosovo, Monaco, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, Sweden, Switzerland, Ukraine, United Kingdom
United Kingdom

Others

-
-

Deposits in Western Continents

North America

Canada, Costa Rica, Cuba, Mexico, Panama, USA
Canada, USA

South America

Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru, Venezuela
Bolivia, Brazil, Colombia, Ecuador

Deposits in Oceania Continent

Australia

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

Migmatite vs Hornfels 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 Migmatite and Hornfels Reserves. Migmatite is typically a granitic rock within a metamorphic host rock which is composed of two intermingled but distinguishable components. 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. 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 Migmatite vs Hornfels information and Migmatite vs Hornfels characteristics in the upcoming sections.

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

More about Migmatite and Hornfels

Here you can know more about Migmatite and Hornfels. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Migmatite and Hornfels consists of mineral content and compound content. The mineral content of Migmatite includes Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon and mineral content of Hornfels includes Andalusite. You can also check out the list of all Metamorphic Rocks. When we have to compare Migmatite vs Hornfels, the texture, color and appearance plays an important role in determining the type of rock. Migmatite is available in black, bluish - grey, brown, brown- black, dark greenish - grey, dark grey to black colors whereas, Hornfels is available in brown, dark greenish - grey, green, reddish brown colors. Appearance of Migmatite is Dull, Banded and Foilated and that of Hornfels is Dull. Properties of rock is another aspect for Migmatite vs Hornfels. The hardness of Migmatite is 5.5-6.5 and that of Hornfels is 2-3. The types of Migmatite are Diatexites and Metatexites whereas types of Hornfels are Biotite hornfels. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Migmatite is white while that of Hornfels is . The specific heat capacity of Migmatite is 0.79 kJ/Kg K and that of Hornfels 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.Migmatite is heat resistant, pressure resistant whereas Hornfels is heat resistant, impact resistant, pressure resistant.