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Norite Rock



Definition

Definition
Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine

History

Origin
Norway

Discoverer
Unknown

Etymology
From the Norwegian name for Norway, Norge

Class
Igneous Rocks

Sub-Class
Durable Rock, Hard Rock

Family

Group
Plutonic

Other Categories
Coarse Grained Rock, Opaque Rock

Texture

Texture
Phaneritic

Color
Dark Grey to Black

Maintenance
Less

Durability
Durable

Water Resistant
Yes

Scratch Resistant
Yes

Stain Resistant
Yes

Wind Resistant
Yes

Acid Resistant
Yes

Appearance
Veined and Shiny

Uses

Architecture

Interior Uses
Decorative Aggregates, Entryways, Interior Decoration

Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration

Other Architectural Uses
Curbing

Industry

Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate

Medical Industry
-

Antiquity Uses
Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses
Cemetery Markers, Commemorative Tablets, Laboratory bench tops, Jewelry, Sea Defence, Tombstones

Types

Types
Ultramafic intrusive rock

Features
Smooth to touch

Archaeological Significance

Monuments
-

Famous Monuments
-

Sculpture
-

Famous Sculptures
-

Pictographs
-

Petroglyphs
-

Figurines
-

Fossils
Absent

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.

Composition

Mineral Content
Augite, Olivine, Plagioclase, Pyroxene

Compound Content
Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide

Transformation

Metamorphism
Yes

Types of Metamorphism
Cataclastic Metamorphism, Impact Metamorphism

Weathering
Yes

Types of Weathering
Biological Weathering

Erosion
Yes

Types of Erosion
Chemical Erosion, Coastal Erosion

Properties

Physical Properties

Hardness
7

Grain Size
Coarse Grained

Fracture
Conchoidal

Streak
Black

Porosity
Highly Porous

Luster
-

Compressive Strength
225.00 N/mm2 8

Cleavage
-

Toughness
1.6

Specific Gravity
2.86-2.87

Transparency
Opaque

Density
2.7-3.3 g/cm3

Thermal Properties

Specific Heat Capacity
0.52 kJ/Kg K 28

Resistance
Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia
India, Russia

Africa
South Africa

Europe
Germany, Greece, Italy, Scotland, Turkey

Others
Greenland

Deposits in Western Continents

North America
Canada, USA

South America
Brazil, Colombia, Venezuela

Deposits in Oceania Continent

Australia
New Zealand, Queensland

Definition >>
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Igneous Rocks

Information about Norite

Rocks are naturally occurring solids which are composed of minerals & have been used by humans since ages. From Stone Age, rocks are used for various purposes. Also, the metals and minerals found in rock play an important role in our life. Get to know all the Norite Uses. We have provided you with all information about Norite rock here. Norite is a mafic intrusive igneous rock composed largely of the calcium-rich plagioclase labradorite, orthopyroxene, and olivine. Norite is available in dark grey to black colors. The streak of a rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Norite is black. Get to know more about Norite rock and characteristics of Norite rock in the next sections.

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