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Blue Granite and Icelandite


Icelandite and Blue Granite


Definition

Definition
Blue Granite is an igneous rock and a variety of Larvikite, notable for the presence of thumbnail-sized blue crystals of feldspar   
Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock   

History
  
  

Origin
Unknown   
Iceland   

Discoverer
Unknown   
Ian S. E. Carmichael   

Etymology
From the color of rock, Blue   
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland   

Class
Igneous Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Medium Hardness Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Volcanic   
Volcanic   

Other Categories
Fine Grained Rock, Opaque Rock   
Fine Grained Rock, Opaque Rock   

Texture

Texture
Phaneritic   
Aphanitic to Porphyritic   

Color
Black, Brown, Light to Dark Grey, White   
Bluish - Grey, Grey, Pink, Yellow   

Maintenance
Less   
More   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
No   

Wind Resistant
Yes   
Yes   

Acid Resistant
No   
No   

Appearance
Shiny   
Dull and Soft   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles, Flooring, Interior Decoration   
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration, Kitchens   

Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration   
Office Buildings, Roof Tiles   

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate   
Cobblestones, Construction Aggregate, for Road Aggregate   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines   
Artifacts, Jewellery, Sculpture, Small Figurines   

Other Uses
  
  

Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling   
Cemetery Markers, Creating Artwork   

Types

Types
Not Available   
Not Available   

Features
Available in lots of colors, Is one of the oldest rock   
Generally rough to touch, High silica content, Is one of the oldest rock   

Archaeological Significance
  
  

Monuments
Used   
Not Yet Used   

Famous Monuments
Data Not Available   
Not Applicable   

Sculpture
Used   
Used   

Famous Sculptures
Data Not Available   
Data Not Available   

Pictographs
Not Used   
Not Used   

Petroglyphs
Not Used   
Not Used   

Figurines
Used   
Used   

Fossils
Absent   
Absent   

Formation

Formation
Blue Granite is an igneous rock which is a variety of Larvikite and is known mainly for the presence of thumbnail-sized crystals of feldspar.   
Icelandite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.   

Composition
  
  

Mineral Content
Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Muscovite or Illite, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon   
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon   

Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide   
Silicon Dioxide   

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism   
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism   

Weathering
Yes   
Yes   

Types of Weathering
Biological Weathering, Chemical Weathering   
Biological Weathering   

Erosion
Yes   
Yes   

Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion   
Chemical Erosion, Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion   

Properties

Physical Properties
  
  

Hardness
6-7   
7   

Grain Size
Medium to Fine Coarse Grained   
Very fine-grained   

Fracture
Not Available   
Uneven   

Streak
White   
White   

Porosity
Less Porous   
Less Porous   

Luster
Subvitreous to Dull   
Vitreous   

Compressive Strength
175.00 N/mm2   
13
Not Available   

Cleavage
Not Available   
Not Available   

Toughness
Not Available   
1.1   

Specific Gravity
2.8-3   
2.5-2.8   

Transparency
Opaque   
Opaque   

Density
2.9-2.91 g/cm3   
2.11-2.36 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.79 kJ/Kg K   
16
2.39 kJ/Kg K   
2

Resistance
Heat Resistant, Impact Resistant, Pressure Resistant   
Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
Not Yet Found   
India, Indonesia, Japan, Nepal, South Korea   

Africa
Not Yet Found   
Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania   

Europe
Bulgaria, England, Germany, Norway, Romania, Switzerland   
Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
USA   
Mexico, USA   

South America
Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru   
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela   

Deposits in Oceania Continent
  
  

Australia
New South Wales, New Zealand, Queensland, South Australia, Western Australia   
New South Wales, New Zealand, Western Australia   

Summary >>
<< Reserves

All about Blue Granite and Icelandite Properties

Know all about Blue Granite and Icelandite properties here. All properties of rocks are important as they define the type of rock and its application. Blue Granite and Icelandite belong to Igneous Rocks.Texture of Blue Granite is Phaneritic whereas that of Icelandite is Aphanitic to Porphyritic. Blue Granite appears Shiny and Icelandite appears Dull and Soft. The luster of Blue Granite is subvitreous to dull while that of Icelandite is vitreous. Blue Granite is available in black, brown, light to dark grey, white colors whereas Icelandite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Blue Granite and Icelandite are cemetery markers, commemorative tablets, creating artwork, curling.

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