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Rapakivi Granite
Rapakivi Granite

Nepheline Syenite
Nepheline Syenite



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Rapakivi Granite
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Nepheline Syenite

Rapakivi Granite and Nepheline Syenite

1 Definition
1.1 Definition
Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase
Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz
1.2 History
1.2.1 Origin
Finland, Europe
Unknown
1.2.2 Discoverer
Jakob Sederholm
Unknown
1.3 Etymology
From Finnish Rapakivi which stands for crumbly rock
From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China
1.4 Class
Igneous Rocks
Igneous Rocks
1.4.1 Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
1.5 Family
1.5.1 Group
Plutonic
Plutonic
1.6 Other Categories
Coarse Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
2 Texture
2.1 Texture
Granular, Phaneritic
Granular
2.2 Color
Black, Grey, Orange, Pink, White
Brown, Buff, Cream, Green, Grey, Pink, White
2.3 Maintenance
More
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
Veined or Pebbled
Banded and Foilated
3 Uses
3.1 Architecture
3.1.1 Interior Uses
Bathrooms, Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Interior Decoration, Kitchens, Stair Treads
Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration
3.1.2 Exterior Uses
As Building Stone, As Facing Stone, Office Buildings, Paving Stone, Resorts
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
3.1.3 Other Architectural Uses
Not Yet Used
Curbing
3.2 Industry
3.2.1 Construction Industry
As Dimension Stone
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics
3.2.2 Medical Industry
Not Yet Used
Not Yet Used
3.3 Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Monuments, Sculpture
3.4 Other Uses
3.4.1 Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling, Laboratory bench tops, Tombstones
Cemetery Markers, Creating Artwork
4 Types
4.1 Types
Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite
Borolanite and Litchfieldite
4.2 Features
Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock
Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock
4.3 Archaeological Significance
4.3.1 Monuments
Used
Used
4.3.2 Famous Monuments
Data Not Available
Data Not Available
4.3.3 Sculpture
Used
Used
4.3.4 Famous Sculptures
Data Not Available
Data Not Available
4.3.5 Pictographs
Not Used
Used
4.3.6 Petroglyphs
Not Used
Used
4.3.7 Figurines
Used
Used
4.4 Fossils
Absent
Absent
5 Formation
5.1 Formation
Granite is an igneous rock which is very hard, crystalline and is visibly homogeneous in texture and forms by melting of continental rocks
Nepheline Syenites are formed due to alkaline igneous activities and are generally formed in thick continental crustal areas or in Cordilleran subduction zones.
5.2 Composition
5.2.1 Mineral Content
Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz
Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite
5.2.2 Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
5.3 Transformation
5.3.1 Metamorphism
5.3.2 Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism
Burial Metamorphism, Impact Metamorphism
5.3.3 Weathering
5.3.4 Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering
5.3.5 Erosion
5.3.6 Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion
Chemical Erosion
6 Properties
6.1 Physical Properties
6.1.1 Hardness
6-75.5-6
Coal
1 7
6.1.2 Grain Size
Large and Coarse Grained
Fine Grained
6.1.3 Fracture
Not Available
Conchoidal to Uneven
6.1.4 Streak
White
White
6.1.5 Porosity
Less Porous
Less Porous
6.1.6 Luster
Dull to Grainy with Sporadic parts Pearly and Vitreous
Greasy to Dull
6.1.7 Compressive Strength
175.00 N/mm2150.00 N/mm2
What Is Obsidian
0.15 450
6.1.8 Cleavage
Not Available
Poor
6.1.9 Toughness
Not Available
Not Available
6.1.10 Specific Gravity
2.6-2.72.6
Granite
0 8.4
6.1.11 Transparency
Opaque
Translucent to Opaque
6.1.12 Density
2.6-2.8 g/cm32.6 g/cm3
Granite
0 1400
6.2 Thermal Properties
6.2.1 Specific Heat Capacity
0.79 kJ/Kg KNA
What Is Granulite
0.14 3.2
6.2.2 Resistance
Heat Resistant, Wear Resistant
Heat Resistant, Impact Resistant, Wear Resistant
7 Reserves
7.1 Deposits in Eastern Continents
7.1.1 Asia
China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam
Indonesia, Iran, Russia, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Turkmenistan, Vietnam
7.1.2 Africa
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
7.1.3 Europe
Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela
Andorra, Finland, France, Great Britain, Italy, Norway, Portugal, Spain, Sweden
7.1.4 Others
Not Yet Found
Greenland
7.2 Deposits in Western Continents
7.2.1 North America
Canada, USA
Canada, USA
7.2.2 South America
Not Yet Found
Brazil, Chile, Colombia, Uruguay, Venezuela
7.3 Deposits in Oceania Continent
7.3.1 Australia
Not Yet Found
New Zealand, Queensland, South Australia, Tasmania, Western Australia

All about Rapakivi Granite and Nepheline Syenite Properties

Know all about Rapakivi Granite and Nepheline Syenite properties here. All properties of rocks are important as they define the type of rock and its application. Rapakivi Granite and Nepheline Syenite belong to Igneous Rocks.Texture of Rapakivi Granite is Granular, Phaneritic whereas that of Nepheline Syenite is Granular. Rapakivi Granite appears Veined or Pebbled and Nepheline Syenite appears Banded and Foilated. The luster of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous while that of Nepheline Syenite is greasy to dull. Rapakivi Granite is available in black, grey, orange, pink, white colors whereas Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors. The commercial uses of Rapakivi Granite and Nepheline Syenite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones.