Hornfels

Claystone

Hornfels vs Claystone

Hornfels

Claystone

Add ⊕

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

Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay

History

Origin

New Zealand

Discoverer

Unknown

Etymology

From German which means hornstone

From English clay and stone as the rock contains more amount of clay

Class

Metamorphic Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Soft Rock

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Granular, Platy

Clastic

Color

Brown, Dark Greenish - Grey, Green, Reddish Brown

Black, Blue, Brown, Green, Grey, Orange, Red, White, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull

Rough and Dull

Uses

Architecture

Interior Uses

Decorative Aggregates, Flooring, Homes, Interior Decoration

Decorative Aggregates, Entryways, Floor Tiles, Homes, Interior Decoration

Exterior Uses

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

As Facing Stone, Roof Tiles

Other Architectural Uses

Curbing

Industry

Construction Industry

for Road Aggregate, Roadstone

As a Sintering Agent in Steel Industry to process Iron Ore, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar

Medical Industry

Antiquity Uses

Artifacts, Monuments

Artifacts, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork

Pottery

Types

Biotite hornfels

Claystone

Features

Smooth to touch

Available in Lots of Colors and Patterns, Smooth to touch, Very fine grained rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

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.

Claystone is generally quite soft, but can be hard and brittle. It forms due to weathering of mudstone.

Composition

Mineral Content

Andalusite

Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz

Compound Content

Fe, Mg

Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, MgO, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

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

Coastal Erosion, Water Erosion

Properties

Physical Properties

Hardness

2-33.5-4

1 7

👆🏻

Grain Size

Fine Grained

Fracture

Conchoidal

Streak

White

Porosity

Highly Porous

Very Less Porous

Luster

Shiny

Dull

Compressive Strength

5.80 N/mm²40.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

2.6

Specific Gravity

3.4-3.90

0 8.4

👆🏻

Transparency

Opaque

Density

0.25-0.30 g/cm³2-2.9 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, Impact Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Bangladesh, China, India, Russia

Africa

Cameroon, East Africa, Tanzania, Western Africa

Ethiopia, Kenya, Morocco, South Africa, Tanzania

Europe

United Kingdom

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland

Others

Deposits in Western Continents

North America

Canada, USA

Canada, Panama, USA

South America

Bolivia, Brazil, Colombia, Ecuador

Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela

Deposits in Oceania Continent

Australia

New South Wales, New Zealand, Queensland, Western Australia

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

Hornfels vs Claystone 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 Claystone 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. Claystone is a fine-grained, dark gray to pink sedimentary rock which mainly consists of compacted and hardened clay. 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 Claystone information and Hornfels vs Claystone characteristics in the upcoming sections.

Compare Metamorphic Rocks » More

Hornfels vs Suevite

Hornfels vs Skarn

Hornfels vs Serpentinite

» More Compare Metamorphic Rocks

Hornfels vs Claystone 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 Claystone characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Hornfels and Properties of Claystone. Learn more about Hornfels vs Claystone in the next section. The interior uses of Hornfels include Decorative aggregates, Flooring, Homes and Interior decoration whereas the interior uses of Claystone include Decorative aggregates, Entryways, Floor tiles, Homes and Interior decoration. Due to some exceptional properties of Hornfels and Claystone, they have various applications in construction industry. The uses of Hornfels in construction industry include For road aggregate, Roadstone and that of Claystone include As a sintering agent in steel industry to process iron ore, Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar.

More about Hornfels and Claystone

Here you can know more about Hornfels and Claystone. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Hornfels and Claystone consists of mineral content and compound content. The mineral content of Hornfels includes Andalusite and mineral content of Claystone includes Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz. You can also check out the list of all Metamorphic Rocks. When we have to compare Hornfels vs Claystone, 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, Claystone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. Appearance of Hornfels is Dull and that of Claystone is Rough and Dull. Properties of rock is another aspect for Hornfels vs Claystone. The hardness of Hornfels is 2-3 and that of Claystone is 3.5-4. The types of Hornfels are Biotite hornfels whereas types of Claystone are Claystone. 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 Claystone is white. The specific heat capacity of Hornfels is 0.84 kJ/Kg K and that of Claystone 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 Claystone is heat resistant, impact resistant.