Definition
Gritstone or grit is a hard, coarse-grained, siliceous sandstone
  
Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock
  
History
  
  
Origin
Pennines, England
  
Iceland
  
Discoverer
J.J. Ferber
  
Ian S. E. Carmichael
  
Etymology
From Grit + Stone
  
From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland
  
Class
Sedimentary Rocks
  
Igneous Rocks
  
Sub-Class
Durable Rock, Hard Rock
  
Durable Rock, Hard Rock
  
Family
  
  
Group
Not Applicable
  
Volcanic
  
Other Categories
Coarse Grained Rock, Opaque Rock
  
Fine Grained Rock, Opaque Rock
  
Texture
Earthy
  
Aphanitic to Porphyritic
  
Color
Beige, Black, Brown, Colourless, Cream, Dark Brown, Green, Grey, Light Green, Light to Dark Grey, Pink, Red, White, Yellow
  
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
Layered and Foliated
  
Dull and Soft
  
Architecture
  
  
Interior Uses
Countertops, Decorative Aggregates, Homes, Interior Decoration
  
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration, Kitchens
  
Exterior Uses
As Building Stone, Garden Decoration, Office Buildings, Paving Stone
  
Office Buildings, Roof Tiles
  
Other Architectural Uses
Curbing
  
Curbing
  
Industry
  
  
Construction Industry
Construction Aggregate, Roadstone
  
Cobblestones, Construction Aggregate, for Road Aggregate
  
Medical Industry
Not Yet Used
  
Not Yet Used
  
Antiquity Uses
Artifacts, Monuments, Sculpture
  
Artifacts, Jewellery, Sculpture, Small Figurines
  
Other Uses
  
  
Commercial Uses
An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO), Tombstones
  
Cemetery Markers, Creating Artwork
  
Types
Not Available
  
Not Available
  
Features
Available in Lots of Colors and Patterns, Generally rough to touch, Very fine grained 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
Present
  
Absent
  
Formation
Gritstone is a type of sedimentary rock which was formed on the floors of wide river deltas where the grit deposits were laid down, with every tide or flood dumping another layer of sediment.
  
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
Calcite, Clay Minerals, Feldspar, Micas, Quartz
  
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon
  
Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide
  
Silicon Dioxide
  
Transformation
  
  
Metamorphism
No
  
Yes
  
Types of Metamorphism
Not Applicable
  
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
  
Weathering
Yes
  
Yes
  
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
  
Biological Weathering
  
Erosion
Yes
  
Yes
  
Types of Erosion
Chemical Erosion, Coastal Erosion
  
Chemical Erosion, Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion
  
Physical Properties
  
  
Hardness
6-7
  
7
  
Grain Size
Coarse Grained
  
Very fine-grained
  
Fracture
Conchoidal
  
Uneven
  
Streak
White
  
White
  
Porosity
Highly Porous
  
Less Porous
  
Luster
Dull
  
Vitreous
  
Compressive Strength
70.00 N/mm
2
  
24
Not Available
  
Cleavage
Perfect
  
Not Available
  
Toughness
Not Available
  
1.1
  
Specific Gravity
2.250
  
2.5-2.8
  
Transparency
Opaque
  
Opaque
  
Density
2.2 g/cm3
  
2.11-2.36 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
0.92 kJ/Kg K
  
10
2.39 kJ/Kg K
  
2
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant
  
Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant
  
Deposits in Eastern Continents
  
  
Asia
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan
  
India, Indonesia, Japan, Nepal, South Korea
  
Africa
Namibia, Nigeria, South Africa
  
Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania
  
Europe
Austria, Denmark, Germany, Great Britain, Netherlands, Poland, Sweden, Switzerland, United Kingdom
  
Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom
  
Others
Greenland
  
Not Yet Found
  
Deposits in Western Continents
  
  
North America
Canada, USA
  
Mexico, USA
  
South America
Brazil
  
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
  
Deposits in Oceania Continent
  
  
Australia
New South Wales, New Zealand, Western Australia
  
New South Wales, New Zealand, Western Australia
  
Gritstone vs Icelandite Characteristics
Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Gritstone vs Icelandite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Gritstone and Properties of Icelandite. Learn more about Gritstone vs Icelandite in the next section. The interior uses of Gritstone include Countertops, Decorative aggregates, Homes and Interior decoration whereas the interior uses of Icelandite include Decorative aggregates, Floor tiles, Homes, Interior decoration and Kitchens. Due to some exceptional properties of Gritstone and Icelandite, they have various applications in construction industry. The uses of Gritstone in construction industry include Construction aggregate, Roadstone and that of Icelandite include Cobblestones, Construction aggregate, For road aggregate.
More about Gritstone and Icelandite
Here you can know more about Gritstone and Icelandite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Gritstone and Icelandite consists of mineral content and compound content. The mineral content of Gritstone includes Calcite, Clay Minerals, Feldspar, Micas, Quartz and mineral content of Icelandite includes Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon. You can also check out the list of all Sedimentary Rocks. When we have to compare Gritstone vs Icelandite, the texture, color and appearance plays an important role in determining the type of rock. Gritstone is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors whereas, Icelandite is available in bluish - grey, grey, pink, yellow colors. Appearance of Gritstone is Layered and Foliated and that of Icelandite is Dull and Soft. Properties of rock is another aspect for Gritstone vs Icelandite. The hardness of Gritstone is 6-7 and that of Icelandite is 7. The types of Gritstone are Not Available whereas types of Icelandite are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Gritstone and Icelandite is white. The specific heat capacity of Gritstone is 0.92 kJ/Kg K and that of Icelandite is 2.39 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Gritstone is heat resistant, impact resistant, pressure resistant whereas Icelandite is heat resistant, pressure resistant, scratch resistant, wear resistant.