Definition
Foidolite is a rare type of coarse-grained intrusive igneous rock with a feldspathoid mineral content greater than 60%
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster
Origin
-
Pennsylvania, U.S.
Discoverer
Unknown
Unknown
Etymology
From the mineral feldspathoid which is the main content of rock
From Greek anthrakites, from anthrax, anthrak meaning coal
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Soft Rock
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Texture
Earthy
Amorphous, Glassy
Color
Black, Brown, Green, Grey, Pink, White
Black, Brown, Dark Brown, Grey, Light to Dark Grey
Durability
Durable
Durable
Appearance
Dull
Veined or Pebbled
Interior Uses
Decorative Aggregates, Interior Decoration
-
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
-
Other Architectural Uses
Curbing
-
Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate
Cement Manufacture, for Road Aggregate, Making natural cement, Steel Production
Medical Industry
Taken as a Supplement for Calcium or Magnesium
In Chemical and Pharmaceutical Industry, Manufacture of Aspirins
Antiquity Uses
Artifacts, Monuments, Sculpture
-
Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork
Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry
Types
Igneous rock
Semi-anthracite and Meta-anthracite
Features
Host Rock for Lead
Helps in production of Heat and Electricity, Used as fossil fuel
Archaeological Significance
Formation
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.
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.
Mineral Content
Amphibole, Biotite, Feldspar, Olivine, Plagioclase, Pyroxene
Calcite, Clay, Clay Minerals
Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism
Grain Size
Medium to Fine Coarse Grained
Medium to Fine Coarse Grained
Fracture
Conchoidal
Conchoidal
Porosity
Very Less Porous
Less Porous
Luster
Subvitreous to Dull
Shiny
Specific Gravity
2.86
1.1-1.4
Transparency
Translucent
Opaque
Density
-9999 g/cm3
1.25-2.5 g/cm3
Resistance
Heat Resistant, Wear Resistant
Heat Resistant, Water Resistant
Deposits in Eastern Continents
Asia
Russia
Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam
Africa
South Africa, Western Africa
Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania
Europe
-
Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom
Deposits in Western Continents
North America
Canada, USA
Canada, Mexico, USA
South America
-
Brazil, Chile, Colombia, Venezuela
Deposits in Oceania Continent
Australia
Central Australia, Western Australia
New South Wales, Queensland, Victoria
Foidolite vs Anthracite 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. Foidolite vs Anthracite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Foidolite and Properties of Anthracite. Learn more about Foidolite vs Anthracite in the next section. The interior uses of Foidolite include Decorative aggregates and Interior decoration whereas the interior uses of Anthracite include . Due to some exceptional properties of Foidolite and Anthracite, they have various applications in construction industry. The uses of Foidolite in construction industry include As dimension stone, Cement manufacture, For road aggregate and that of Anthracite include Cement manufacture, For road aggregate, Making natural cement, Steel production.
More about Foidolite and Anthracite
Here you can know more about Foidolite and Anthracite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Foidolite and Anthracite consists of mineral content and compound content. The mineral content of Foidolite includes Amphibole, Biotite, Feldspar, Olivine, Plagioclase, Pyroxene and mineral content of Anthracite includes Calcite, Clay, Clay Minerals. You can also check out the list of all Igneous Rocks. When we have to compare Foidolite vs Anthracite, the texture, color and appearance plays an important role in determining the type of rock. Foidolite is available in black, brown, green, grey, pink, white colors whereas, Anthracite is available in black, brown, dark brown, grey, light to dark grey colors. Appearance of Foidolite is Dull and that of Anthracite is Veined or Pebbled. Properties of rock is another aspect for Foidolite vs Anthracite. The hardness of Foidolite is 1.5 and that of Anthracite is 1-1.5. The types of Foidolite are Igneous rock whereas types of Anthracite are Semi-anthracite and Meta-anthracite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Foidolite is white while that of Anthracite is black. The specific heat capacity of Foidolite is 0.79 kJ/Kg K and that of Anthracite is 1.32 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Foidolite is heat resistant, wear resistant whereas Anthracite is heat resistant, water resistant.