Anthracite

Foidolite

Anthracite vs Foidolite

Anthracite

Foidolite

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Definition

Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster

Foidolite is a rare type of coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%

History

Origin

Pennsylvania, U.S.

Discoverer

Unknown

Etymology

From Greek anthrakites, from anthrax, anthrak meaning coal

From the mineral feldspathoid which is the main content of rock

Class

Metamorphic Rocks

Igneous Rocks

Sub-Class

Durable Rock, Soft Rock

Family

Group

Plutonic

Other Categories

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

Texture

Amorphous, Glassy

Earthy

Color

Black, Brown, Dark Brown, Grey, Light to Dark Grey

Black, Brown, Green, Grey, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Veined or Pebbled

Dull

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing

Industry

Construction Industry

Cement Manufacture, for Road Aggregate, Making natural cement, Steel Production

As Dimension Stone, Cement Manufacture, for Road Aggregate

Medical Industry

In Chemical and Pharmaceutical Industry, Manufacture of Aspirins

Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry

Cemetery Markers, Commemorative Tablets, Creating Artwork

Types

Semi-anthracite and Meta-anthracite

Igneous rock

Features

Helps in production of Heat and Electricity, Used as fossil fuel

Host Rock for Lead

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

Anthracite forms from the accumulation of plant debris in a swamp environment. When plant debris dies and falls into the swamp, the standing water of the swamp protects it from decay.

Foidolites is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

Composition

Mineral Content

Calcite, Clay, Clay Minerals

Amphibole, Biotite, Feldspar, Olivine, Plagioclase, Pyroxene

Compound Content

Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur

Aluminium Oxide, CaO, Iron(III) Oxide, FeO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Contact Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism

Weathering

✔ ✘

Types of Weathering

Erosion

✔ ✘

Types of Erosion

Properties

Physical Properties

Hardness

1-1.51.5

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

Black

White

Porosity

Less Porous

Very Less Porous

Luster

Shiny

Subvitreous to Dull

Compressive Strength

-80.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

Specific Gravity

1.1-1.42.86

0 8.4

👆🏻

Transparency

Opaque

Translucent

Density

1.25-2.5 g/cm³-9999 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

1.32 kJ/Kg K0.79 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Water Resistant

Heat Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam

Russia

Africa

Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania

South Africa, Western Africa

Europe

Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom

Others

Deposits in Western Continents

North America

Canada, Mexico, USA

Canada, USA

South America

Brazil, Chile, Colombia, Venezuela

Deposits in Oceania Continent

Australia

New South Wales, Queensland, Victoria

Central Australia, Western Australia

Anthracite vs Foidolite 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 Anthracite and Foidolite Reserves. Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster. Foidolite is a rare type of coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%. 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 Anthracite vs Foidolite information and Anthracite vs Foidolite characteristics in the upcoming sections.

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

More about Anthracite and Foidolite

Here you can know more about Anthracite and Foidolite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Anthracite and Foidolite consists of mineral content and compound content. The mineral content of Anthracite includes Calcite, Clay, Clay Minerals and mineral content of Foidolite includes Amphibole, Biotite, Feldspar, Olivine, Plagioclase, Pyroxene. You can also check out the list of all Metamorphic Rocks. When we have to compare Anthracite vs Foidolite, the texture, color and appearance plays an important role in determining the type of rock. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors whereas, Foidolite is available in black, brown, green, grey, pink, white colors. Appearance of Anthracite is Veined or Pebbled and that of Foidolite is Dull. Properties of rock is another aspect for Anthracite vs Foidolite. The hardness of Anthracite is 1-1.5 and that of Foidolite is 1.5. The types of Anthracite are Semi-anthracite and Meta-anthracite whereas types of Foidolite are Igneous rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Anthracite is black while that of Foidolite is white. The specific heat capacity of Anthracite is 1.32 kJ/Kg K and that of Foidolite is 0.79 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Anthracite is heat resistant, water resistant whereas Foidolite is heat resistant, wear resistant.