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Amphibolite
Amphibolite

Lignite
Lignite



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Amphibolite
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Lignite

Amphibolite vs Lignite

Definition

Definition

Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase
Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat

History

Origin

-
France

Discoverer

Alexandre Brongniart
Unknown

Etymology

From Amphibole + -ite
From French, Latin lignum wood + -ite1

Class

Metamorphic Rocks
Sedimentary Rocks

Sub-Class

Durable Rock, Hard Rock
Durable Rock, Soft Rock

Family

Group

-
-

Other Categories

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

Texture

Texture

Banded, Foliated, Massive
Amorphous, Glassy

Color

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

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Foliated
Veined or Pebbled

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Kitchens
-

Exterior Uses

As Building Stone, As Facing Stone, Paving Stone, Office Buildings
-

Other Architectural Uses

Curbing
-

Industry

Construction Industry

As Dimension Stone, Building houses or walls, Cobblestones, Construction Aggregate, for Road Aggregate, Landscaping, Production of Glass and Ceramics, Roadstone
for Road Aggregate, Steel Production

Medical Industry

-
-

Antiquity Uses

Artifacts, Sculpture, Small Figurines
-

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork
Electricity Generation

Types

Types

Hornblendite
Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite

Features

Clasts are smooth to touch, Matrix variable, Surfaces are often shiny
Generally rough to touch, Helps in production of Heat and Electricity, Used as fossil fuel

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Present

Formation

Formation

Amphibolite is a coarse-grained metamorphic rock which forms by metamorphism of mafic igneous rocks like basalt and gabbro or from the metamorphism of clay-rich sedimentary rocks like marl or graywacke.
Coal formation takes place due to accumulation of plant debris in a swamp environment. The Coal formation process continues, as peat turns into lignite brown or black coal at increasing heat and pressure.

Composition

Mineral Content

Amphibole, Andalusite, Biotite, Calcite, Epidote, Garnet, Hornblade, Kyanite, Magnetite, Olivine, Plagioclase, Pyroxene, Staurolite, Wollastonite
-

Compound Content

Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur

Transformation

Metamorphism

Types of Metamorphism

-
-

Weathering

Types of Weathering

Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

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

Properties

Physical Properties

Hardness

6-71
1 7
👆🏻

Grain Size

Medium to Coarse Grained
Medium to Fine Coarse Grained

Fracture

Irregular to Conchoidal
Conchoidal

Streak

White to Grey
Black

Porosity

Less Porous
Highly Porous

Luster

Vitreous to Dull
Dull to Vitreous to Submetallic

Compressive Strength

90.00 N/mm2-
0.15 450
👆🏻

Cleavage

-
-

Toughness

2.3
-

Specific Gravity

2.51.1-1.4
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

2.85-3.07 g/cm3800-801 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K1.26 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant
Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Africa

Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda
Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania

Europe

Germany, Greece, Iceland, Norway, Poland
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, USA
Canada, Mexico, USA

South America

Brazil
Brazil, Chile, Colombia, Venezuela

Deposits in Oceania Continent

Australia

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

Amphibolite vs Lignite 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 Amphibolite and Lignite Reserves. Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase. Lignite is a soft brownish coal which shows traces of plants and is intermediate between bituminous coal and peat. 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 Amphibolite vs Lignite information and Amphibolite vs Lignite characteristics in the upcoming sections.

Amphibolite vs Lignite 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. Amphibolite vs Lignite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Amphibolite and Properties of Lignite. Learn more about Amphibolite vs Lignite in the next section. The interior uses of Amphibolite include Countertops, Decorative aggregates, Entryways, Floor tiles, Flooring, Homes, Hotels and Kitchens whereas the interior uses of Lignite include . Due to some exceptional properties of Amphibolite and Lignite, they have various applications in construction industry. The uses of Amphibolite in construction industry include As dimension stone, Building houses or walls, Cobblestones, Construction aggregate, For road aggregate, Landscaping, Production of glass and ceramics, Roadstone and that of Lignite include For road aggregate, Steel production.

More about Amphibolite and Lignite

Here you can know more about Amphibolite and Lignite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Amphibolite and Lignite consists of mineral content and compound content. The mineral content of Amphibolite includes Amphibole, Andalusite, Biotite, Calcite, Epidote, Garnet, Hornblade, Kyanite, Magnetite, Olivine, Plagioclase, Pyroxene, Staurolite, Wollastonite and mineral content of Lignite includes . You can also check out the list of all Igneous Rocks. When we have to compare Amphibolite vs Lignite, the texture, color and appearance plays an important role in determining the type of rock. Amphibolite is available in black, brown, green, grey colors whereas, Lignite is available in black, brown, dark brown, grey, light to dark grey colors. Appearance of Amphibolite is Foliated and that of Lignite is Veined or Pebbled. Properties of rock is another aspect for Amphibolite vs Lignite. The hardness of Amphibolite is 6-7 and that of Lignite is 1. The types of Amphibolite are Hornblendite whereas types of Lignite are Xyloid Lignite or Fossil Wood and Compact Lignite or Perfect Lignite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Amphibolite is white to grey while that of Lignite is black. The specific heat capacity of Amphibolite is 0.84 kJ/Kg K and that of Lignite is 1.26 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Amphibolite is heat resistant, pressure resistant, wear resistant whereas Lignite is heat resistant.