Norite and Jaspillite
Definition
Definition
Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
History
Origin
Norway
Western Australia, Minnesota
Discoverer
Unknown
Unknown
Etymology
From the Norwegian name for Norway, Norge
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
Plutonic
Not Applicable
Other Categories
Coarse Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock
Texture
Texture
Phaneritic
Banded, Trellis
Color
Dark Grey to Black
Red, Reddish Brown
Maintenance
Less
Less
Durability
Durable
Durable
Water Resistant
Yes
No
Scratch Resistant
Yes
No
Stain Resistant
Yes
No
Wind Resistant
Yes
No
Acid Resistant
Yes
No
Appearance
Veined and Shiny
Banded and Glassy
Uses
Architecture
Interior Uses
Decorative Aggregates, Entryways, Interior Decoration
Decorative Aggregates, Interior Decoration
Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration
As Facing Stone, Garden Decoration, Paving Stone
Other Architectural Uses
Curbing
Curbing
Industry
Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts, Monuments, Sculpture
Artifacts, Jewellery, Monuments
Other Uses
Commercial Uses
Cemetery Markers, Commemorative Tablets, Laboratory bench tops, Jewelry, Sea Defence, Tombstones
Creating Artwork, Jewelry
Types
Types
Not Available
Algoma-type , Lake Superior-type and Superior-type
Features
Smooth to touch
Is one of the oldest rock
Archaeological Significance
Monuments
Used
Used
Famous Monuments
Data Not Available
Data Not Available
Sculpture
Used
Not Yet Used
Famous Sculptures
Data Not Available
Not Applicable
Pictographs
Not Used
Used
Petroglyphs
Not Used
Used
Figurines
Used
Not Yet Used
Fossils
Absent
Present
Formation
Formation
Norite 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.
Jaspillite is a type of sedimentary rock which is formed by the compaction and sedimentation of pieces of broken or weathered rocks and minerals.
Composition
Mineral Content
Augite, Olivine, Plagioclase, Pyroxene
Coesite, Quartz, Sand
Compound Content
Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide
Fe, Iron(III) Oxide, Silicon Dioxide
Transformation
Metamorphism
Yes
No
Types of Metamorphism
Cataclastic Metamorphism, Impact Metamorphism
Not Applicable
Weathering
Yes
Yes
Types of Weathering
Biological Weathering
Biological Weathering, Chemical Weathering
Erosion
Yes
Yes
Types of Erosion
Chemical Erosion, Coastal Erosion
Chemical Erosion, Coastal Erosion
Properties
Physical Properties
Hardness
7
3
Grain Size
Coarse Grained
Large and Coarse Grained
Fracture
Conchoidal
Conchoidal
Streak
Black
White
Porosity
Highly Porous
Very Less Porous
Luster
Not Available
Earthy
Compressive Strength
225.00 N/mm2
7
230.00 N/mm2
6
Cleavage
Not Available
Imperfect
Toughness
1.6
Not Available
Specific Gravity
2.86-2.87
5.0-5.3
Transparency
Opaque
Translucent to Opaque
Density
2.7-3.3 g/cm3
0-5.7 g/cm3
Thermal Properties
Specific Heat Capacity
Not Available
3.20 kJ/Kg K
1
Resistance
Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Impact Resistant, Wear Resistant
Reserves
Deposits in Eastern Continents
Asia
India, Russia
Russia
Africa
South Africa
Not Yet Found
Europe
Germany, Greece, Italy, Scotland, Turkey
Ukraine
Others
Greenland
Not Yet Found
Deposits in Western Continents
North America
Canada, USA
Canada, USA
South America
Brazil, Colombia, Venezuela
Brazil
Deposits in Oceania Continent
Australia
New Zealand, Queensland
Western Australia
All about Norite and Jaspillite Properties
Know all about Norite and Jaspillite properties here. All properties of rocks are important as they define the type of rock and its application. Norite belongs to Igneous Rocks while Jaspillite belongs to Sedimentary Rocks.Texture of Norite is Phaneritic whereas that of Jaspillite is Banded, Trellis. Norite appears Veined and Shiny and Jaspillite appears Banded and Glassy. The luster of Norite is not available while that of Jaspillite is earthy. Norite is available in dark grey to black colors whereas Jaspillite is available in red, reddish brown colors. The commercial uses of Norite are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Jaspillite are creating artwork, jewelry.
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