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Anthracite
Anthracite

Pumice
Pumice



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Anthracite
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Anthracite and Pumice

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1 Definition
1.1 Definition
Anthracite is a type of sedimentary rock which is hard and is variety of coal that has high luster
Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals
1.2 History
1.2.1 Origin
Pennsylvania, U.S.
Spain
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
From Greek anthrakites, from anthrax, anthrak meaning coal
From Old French pomis, from a Latin dialect variant of pumex
1.4 Class
Metamorphic Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Soft Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Not Applicable
Volcanic
1.6 Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
2 Texture
2.1 Texture
Amorphous, Glassy
Vesicular
2.2 Color
Black, Brown, Dark Brown, Grey, Light to Dark Grey
Beige, Colourless, Grey, Light Green, Light Grey, Pink, White, Yellow- grey
2.3 Maintenance
Less
Less
2.4 Durability
Durable
Durable
2.4.1 Water Resistant
81% Metamorphic Rocks Rocks have it !
81% Igneous Rocks Rocks have it !
2.4.2 Scratch Resistant
65% Metamorphic Rocks Rocks have it !
86% Igneous Rocks Rocks have it !
2.4.3 Stain Resistant
42% Metamorphic Rocks Rocks have it !
66% Igneous Rocks Rocks have it !
2.4.4 Wind Resistant
19% Metamorphic Rocks Rocks have it !
49% Igneous Rocks Rocks have it !
2.4.5 Acid Resistant
15% Metamorphic Rocks Rocks have it !
48% Igneous Rocks Rocks have it !
2.5 Appearance
Veined or Pebbled
Vesicular
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Not Yet Used
Decorative Aggregates, Flooring, Homes, Interior Decoration
3.1.2 Exterior Uses
Not Yet Used
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
3.1.3 Other Architectural Uses
Not Yet Used
Curbing, Powder
3.2 Industry
3.2.1 Construction Industry
Cement Manufacture, for Road Aggregate, Making natural cement, Steel Production
As Dimension Stone, Cement Manufacture, for Road Aggregate, In landscaping and horticulture, Making natural cement, Production of lightweight concrete blocks
3.2.2 Medical Industry
In Chemical and Pharmaceutical Industry, Manufacture of Aspirins
As an abrasive in skin exfoliating products, In Chemical and Pharmaceutical Industry, Medicines and Cosmetics
3.3 Antiquity Uses
Not Yet Used
Artifacts
3.4 Other Uses
3.4.1 Commercial Uses
Alumina Refineries, Electricity Generation, Liquid Fuel, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Paper Industry
As a traction material on snow-covered roads, As an abrasive in pencil erasers, Fine abrasive used for polishing, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Used in aquariums
4 Types
4.1 Types
Semi-anthracite and Meta-anthracite
Scoria
4.2 Features
Helps in production of Heat and Electricity, Used as fossil fuel
Host Rock for Lead
4.3 Archaeological Significance
4.3.1 Monuments
Not Yet Used
Not Yet Used
4.3.2 Famous Monuments
Not Applicable
Not Applicable
4.3.3 Sculpture
Not Yet Used
Not Yet Used
4.3.4 Famous Sculptures
Not Applicable
Not Applicable
4.3.5 Pictographs
Used
Used
4.3.6 Petroglyphs
Used
Used
4.3.7 Figurines
Not Yet Used
Not Yet Used
4.4 Fossils
Absent
Absent
5 Formation
5.1 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.
Pumice rock forms when the magma cools so quickly that atoms in the melt are not able to arrange themselves into a crystalline structure.
5.2 Composition
5.2.1 Mineral Content
Calcite, Clay, Clay Minerals
Aluminum Oxides, Calcite, Carbonate, Iron Oxides, Silica
5.2.2 Compound Content
Carbon, Hydrogen, Nitrogen, Oxygen, Sulphur
Al, Aluminium Oxide, CaO, Carbon Dioxide, MgO, Silicon Dioxide
5.3 Transformation
5.3.1 Metamorphism
50% Metamorphic Rocks Rocks have it !
97% Igneous Rocks Rocks have it !
5.3.2 Types of Metamorphism
Burial Metamorphism, Contact Metamorphism, Regional Metamorphism
Burial Metamorphism, Impact Metamorphism
5.3.3 Weathering
65% Metamorphic Rocks Rocks have it !
99% Igneous Rocks Rocks have it !
5.3.4 Types of Weathering
Not Applicable
Biological Weathering, Chemical Weathering, Mechanical Weathering
5.3.5 Erosion
77% Metamorphic Rocks Rocks have it !
92% Igneous Rocks Rocks have it !
5.3.6 Types of Erosion
Not Applicable
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
1-1.5
6
6.1.2 Grain Size
Medium to Fine Coarse Grained
Fine Grained
6.1.3 Fracture
Conchoidal
Planar
6.1.4 Streak
Black
White, Greenish White or Grey
6.1.5 Porosity
Less Porous
Highly Porous
6.1.6 Luster
Shiny
Earthy
6.1.7 Compressive Strength
What Is Flint
Not Available
Rank: N/A (Overall)
51.20 N/mm2
Rank: 26 (Overall)
What Is Obsidian
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6.1.8 Cleavage
Non-Existent
Perfect
6.1.9 Toughness
Not Available
3
6.1.10 Specific Gravity
1.1-1.4
2.86
6.1.11 Transparency
Opaque
Opaque
6.1.12 Density
1.25-2.5 g/cm3
0.25-0.3 g/cm3
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
What Is Banded ..
1.32 kJ/Kg K
Rank: 4 (Overall)
0.87 kJ/Kg K
Rank: 14 (Overall)
What Is Granulite
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6.2.2 Resistance
Heat Resistant, Water Resistant
Impact Resistant, Pressure Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
Bangladesh, Burma, Cambodia, China, India, Indonesia, Kazakhstan, Malaysia, Mongolia, Pakistan, Turkey, Vietnam
Afghanistan, Indonesia, Japan, Russia
7.1.2 Africa
Botswana, Kenya, Morocco, Mozambique, South Africa, Tanzania
Ethiopia, Kenya, Tanzania
7.1.3 Europe
Belgium, Bulgaria, England, France, Germany, Greece, Hungary, Kosovo, Netherlands, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, The Czech Republic, Ukraine, United Kingdom
Greece, Hungary, Iceland, Italy, Turkey
7.1.4 Others
Not Yet Found
Not Yet Found
7.2 Deposits in Western Continents
7.2.1 North America
Canada, Mexico, USA
Bahamas, Barbados, Canada, Costa Rica, Cuba, Jamaica, Mexico, USA
7.2.2 South America
Brazil, Chile, Colombia, Venezuela
Argentina, Chile, Ecuador, Peru
7.3 Deposits in Oceania Continent
7.3.1 Australia
New South Wales, Queensland, Victoria
New Zealand, Western Australia

All about Anthracite and Pumice Properties

Know all about Anthracite and Pumice properties here. All properties of rocks are important as they define the type of rock and its application. Anthracite belongs to Metamorphic Rocks while Pumice belongs to Igneous Rocks.Texture of Anthracite is Amorphous, Glassy whereas that of Pumice is Vesicular. Anthracite appears Veined or Pebbled and Pumice appears Vesicular. The luster of Anthracite is shiny while that of Pumice is earthy. Anthracite is available in black, brown, dark brown, grey, light to dark grey colors whereas Pumice is available in beige, colourless, grey, light green, light grey, pink, white, yellow- grey colors. The commercial uses of Anthracite are alumina refineries, electricity generation, liquid fuel, manufacture of soap, solvents, dyes, plastics and fibres, paper industry and that of Pumice are as a traction material on snow-covered roads, as an abrasive in pencil erasers, fine abrasive used for polishing, manufacture of soap, solvents, dyes, plastics and fibres, used in aquariums.