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Trondhjemite
Trondhjemite

Soapstone
Soapstone



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Trondhjemite
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Trondhjemite and Soapstone

1 Definition
1.1 Definition
Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase. Trondhjemites are sometimes known as plagiogranites.
It is a metamorphic magnesium rich rock because it is composed of the mineral talc
1.2 History
1.2.1 Origin
Tonale, Italy
USA
1.2.2 Discoverer
Unknown
Unknown
1.3 Etymology
Not Available
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, Hard Rock
Durable Rock, Soft Rock
1.5 Family
1.5.1 Group
Plutonic
Not Applicable
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
Phaneritic
Polished
2.2 Color
Black, Brown, Light to Dark Grey, White
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
Banded and Foilated
Dull, Banded and Foilated
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration
Bathrooms, Decorative Aggregates, Homes, Interior Decoration
3.1.2 Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings
As Facing Stone, Garden Decoration
3.1.3 Other Architectural Uses
Curbing
Curbing
3.2 Industry
3.2.1 Construction Industry
As Dimension Stone, Cement Manufacture, Cobblestones, Construction Aggregate, for Road Aggregate
Manufacture of Magnesium and Dolomite Refractories
3.2.2 Medical Industry
Not Yet Used
Taken as a Supplement for Calcium or Magnesium
1.1 Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Jewellery, Monuments, Sculpture
1.3 Other Uses
1.3.1 Commercial Uses
Cemetery Markers, Creating Artwork
Cemetery Markers, Creating Artwork, Gemstone, Jewelry, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Production of Lime, Source of Magnesia (MgO)
2 Types
2.1 Types
Not Available
Not Available
2.2 Features
Is one of the oldest rock, Typically speckled black and white.
Host Rock for Lead
2.3 Archaeological Significance
2.3.1 Monuments
Not Yet Used
Used
2.4.1 Famous Monuments
Not Applicable
Christ the Redeemer in Rio de Janeiro, Stonehenge in English county of Wiltshire
2.4.2 Sculpture
Used
Used
2.5.1 Famous Sculptures
Data Not Available
Data Not Available
2.5.3 Pictographs
Not Used
Used
2.6.2 Petroglyphs
Not Used
Used
2.6.3 Figurines
Used
Used
2.8 Fossils
Absent
Absent
4 Formation
4.1 Formation
When alkali feldspar is extracted from granite, it changes to granitoid and later, it becomes trondhjemite with quartz as major mineral.
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.
4.3 Composition
4.3.1 Mineral Content
Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Manganese Oxides, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon
Albite, Apatite, Biotite, Calcite, Carbonate, Clay Minerals, Hornblende, Ilmenite, Micas, Plagioclase, Pyroxene, Quartz
4.4.1 Compound Content
NaCl, CaO, MgO, Silicon Dioxide
CaO, Mg, MgO
4.5 Transformation
4.5.1 Metamorphism
4.6.1 Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
4.6.3 Weathering
4.6.4 Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Not Applicable
4.6.6 Erosion
4.6.8 Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
Not Applicable
5 Properties
5.1 Physical Properties
5.1.1 Hardness
6-71
Coal
1 7
9.1.2 Grain Size
Medium to Fine Coarse Grained
Fine Grained
9.1.3 Fracture
Conchoidal
Conchoidal
9.1.4 Streak
Bluish Black
Black
9.1.5 Porosity
Very Less Porous
Less Porous
9.1.6 Luster
Subvitreous to Dull
Greasy
9.1.7 Compressive Strength
NA225.00 N/mm2
What Is Obsidian
0.15 450
9.1.14 Cleavage
Not Available
Perfect
9.1.15 Toughness
2.1
1
9.1.16 Specific Gravity
2.86-32.86
Granite
0 8.4
9.1.20 Transparency
Opaque
Opaque
9.1.21 Density
2.73 g/cm32.8-2.9 g/cm3
Granite
0 1400
9.2 Thermal Properties
9.2.1 Specific Heat Capacity
0.92 kJ/Kg K0.88 kJ/Kg K
What Is Granulite
0.14 3.2
9.3.2 Resistance
Heat Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Pressure Resistant
10 Reserves
10.1 Deposits in Eastern Continents
10.1.1 Asia
Not Yet Found
China, India, Indonesia, Japan, North Korea, Russia, Saudi Arabia, Singapore, South Korea, Sri Lanka, Tajikistan, Thailand
10.1.2 Africa
Egypt
Egypt, Ethiopia, Ghana, South Africa, Western Africa
10.1.3 Europe
Finland, Germany, Italy, Romania, Sweden, Turkey
Austria, England, Finland, France, Germany, Greece, Spain, Sweden, Switzerland, United Kingdom
10.1.4 Others
Not Yet Found
Not Yet Found
10.2 Deposits in Western Continents
10.2.1 North America
USA
Canada, USA
10.2.2 South America
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru
Colombia
10.3 Deposits in Oceania Continent
10.3.1 Australia
New Zealand, South Australia, Western Australia
Central Australia, New Zealand, Queensland

All about Trondhjemite and Soapstone Properties

Know all about Trondhjemite and Soapstone properties here. All properties of rocks are important as they define the type of rock and its application. Trondhjemite belongs to Igneous Rocks while Soapstone belongs to Metamorphic Rocks.Texture of Trondhjemite is Phaneritic whereas that of Soapstone is Polished. Trondhjemite appears Banded and Foilated and Soapstone appears Dull, Banded and Foilated. The luster of Trondhjemite is subvitreous to dull while that of Soapstone is greasy. Trondhjemite is available in black, brown, light to dark grey, white colors whereas Soapstone is available in black, black to grey, green, grey colors. The commercial uses of Trondhjemite are cemetery markers, creating artwork 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).