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Pumice
Pumice

Soapstone
Soapstone



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Pumice and Soapstone

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1 Definition
1.1 Definition
Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals
It is a metamorphic magnesium rich rock because it is composed of the mineral talc
1.2 History
1.2.1 Origin
Spain
USA
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
From Old French pomis, from a Latin dialect variant of pumex
From 17th century, because of its greasy feel and use like a soap
1.4 Class
Igneous Rocks
Metamorphic Rocks
1.4.1 Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
1.5 Family
1.5.1 Group
Volcanic
Not Applicable
1.6 Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
2 Texture
2.1 Texture
Vesicular
Polished
2.2 Color
Beige, Colourless, Grey, Light Green, Light Grey, Pink, White, Yellow- grey
Black, Black to Grey, Green, Grey
2.3 Maintenance
Less
Less
2.4 Durability
Durable
Durable
2.4.1 Water Resistant
2.4.2 Scratch Resistant
2.4.3 Stain Resistant
2.4.4 Wind Resistant
2.4.5 Acid Resistant
2.5 Appearance
Vesicular
Dull, Banded and Foilated
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Decorative Aggregates, Flooring, Homes, Interior Decoration
Bathrooms, Decorative Aggregates, Homes, Interior Decoration
3.1.2 Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
As Facing Stone, Garden Decoration
3.1.3 Other Architectural Uses
Curbing, Powder
Curbing
3.2 Industry
3.2.1 Construction Industry
As Dimension Stone, Cement Manufacture, for Road Aggregate, In landscaping and horticulture, Making natural cement, Production of lightweight concrete blocks
Manufacture of Magnesium and Dolomite Refractories
3.2.2 Medical Industry
As an abrasive in skin exfoliating products, In Chemical and Pharmaceutical Industry, Medicines and Cosmetics
Taken as a Supplement for Calcium or Magnesium
3.3 Antiquity Uses
Artifacts
Artifacts, Jewellery, Monuments, Sculpture
3.4 Other Uses
3.4.1 Commercial Uses
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
Cemetery Markers, Creating Artwork, Gemstone, Jewelry, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Production of Lime, Source of Magnesia (MgO)
4 Types
4.1 Types
Scoria
Not Available
4.2 Features
Host Rock for Lead
Host Rock for Lead
4.3 Archaeological Significance
4.3.1 Monuments
Not Yet Used
Used
4.3.2 Famous Monuments
Not Applicable
Christ the Redeemer in Rio de Janeiro, Stonehenge in English county of Wiltshire
4.3.3 Sculpture
Not Yet Used
Used
4.3.4 Famous Sculptures
Not Applicable
Data Not Available
4.3.5 Pictographs
Used
Used
4.3.6 Petroglyphs
Used
Used
4.3.7 Figurines
Not Yet Used
Used
4.4 Fossils
Absent
Absent
5 Formation
5.1 Formation
Pumice rock forms when the magma cools so quickly that atoms in the melt are not able to arrange themselves into a crystalline structure.
Soapstone is a talc-schist, which is a type of metamorphic rock and it is largely composed of the mineral talc and is thus rich inmagnesium.
5.2 Composition
5.2.1 Mineral Content
Aluminum Oxides, Calcite, Carbonate, Iron Oxides, Silica
Albite, Apatite, Biotite, Calcite, Carbonate, Clay Minerals, Hornblende, Ilmenite, Micas, Plagioclase, Pyroxene, Quartz
5.2.2 Compound Content
Al, Aluminium Oxide, CaO, Carbon Dioxide, MgO, Silicon Dioxide
CaO, Mg, MgO
5.3 Transformation
5.3.1 Metamorphism
5.3.2 Types of Metamorphism
Burial Metamorphism, Impact Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
5.3.3 Weathering
5.3.4 Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Not Applicable
5.3.5 Erosion
5.3.6 Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
Not Applicable
6 Properties
6.1 Physical Properties
6.1.1 Hardness
61
Coal
1 7
6.1.2 Grain Size
Fine Grained
Fine Grained
6.1.3 Fracture
Planar
Conchoidal
6.1.4 Streak
White, Greenish White or Grey
Black
6.1.5 Porosity
Highly Porous
Less Porous
6.1.6 Luster
Earthy
Greasy
6.1.7 Compressive Strength
51.20 N/mm2225.00 N/mm2
What Is Obsidian
0.15 450
6.1.8 Cleavage
Perfect
Perfect
6.1.9 Toughness
3
1
6.1.10 Specific Gravity
2.862.86
Granite
0 8.4
6.1.11 Transparency
Opaque
Opaque
6.1.12 Density
0.25-0.3 g/cm32.8-2.9 g/cm3
Granite
0 1400
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
0.87 kJ/Kg K0.88 kJ/Kg K
What Is Granulite
0.14 3.2
6.2.2 Resistance
Impact Resistant, Pressure Resistant
Heat Resistant, Pressure Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
Afghanistan, Indonesia, Japan, Russia
China, India, Indonesia, Japan, North Korea, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Tajikistan, Thailand
7.1.2 Africa
Ethiopia, Kenya, Tanzania
Egypt, Ethiopia, Ghana, South Africa, Western Africa
7.1.3 Europe
Greece, Hungary, Iceland, Italy, Turkey
Austria, England, Finland, France, Germany, Greece, Spain, Sweden, Switzerland, United Kingdom
7.1.4 Others
Not Yet Found
Not Yet Found
7.2 Deposits in Western Continents
7.2.1 North America
Bahamas, Barbados, Canada, Costa Rica, Cuba, Jamaica, Mexico, USA
Canada, USA
7.2.2 South America
Argentina, Chile, Ecuador, Peru
Colombia
7.3 Deposits in Oceania Continent
7.3.1 Australia
New Zealand, Western Australia
Central Australia, New Zealand, Queensland

All about Pumice and Soapstone Properties

Know all about Pumice and Soapstone properties here. All properties of rocks are important as they define the type of rock and its application. Pumice belongs to Igneous Rocks while Soapstone belongs to Metamorphic Rocks.Texture of Pumice is Vesicular whereas that of Soapstone is Polished. Pumice appears Vesicular and Soapstone appears Dull, Banded and Foilated. The luster of Pumice is earthy while that of Soapstone is greasy. Pumice is available in beige, colourless, grey, light green, light grey, pink, white, yellow- grey colors whereas Soapstone is available in black, black to grey, green, grey colors. The commercial uses 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 and that of Soapstone are cemetery markers, creating artwork, gemstone, jewelry, manufacture of soap, solvents, dyes, plastics and fibres, production of lime, source of magnesia (mgo).