Nephelinite

Lherzolite

Nephelinite and Lherzolite

Nephelinite

Lherzolite

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1 Definition

1.1 Definition

Nephelinite is a fine-grained or aphanitic igneous rock made up almost entirely of nepheline and clinopyroxene (variety augite).

Lherzolite is a type of ultramafic igneous rock which contains essential olivine and clinopyroxene and orthopyroxene in equal proportions

1.2 History

1.2.1 Origin

Brazil

France

1.2.3 Discoverer

Unknown

1.3 Etymology

from French néphéline, from Greek nephelē

From the Lherz Massif, an alpine peridotite complex, at Étang de Lers, near Massat in the French Pyrenees; Lherz is the archaic spelling of this location

1.4 Class

Igneous Rocks

1.5.1 Sub-Class

Durable Rock, Hard Rock

1.6 Family

1.6.1 Group

Plutonic

2.2 Other Categories

Fine Grained Rock, Opaque Rock

3 Texture

3.1 Texture

Aphanitic

Grenue

3.3 Color

Black, Brown, Colourless, Green, Grey, White

Black, Dark Greenish - Grey, Green, Pink, Purple

3.4 Maintenance

Less

3.5 Durability

Durable

3.6.2 Water Resistant

✔ ✘

3.6.3 Scratch Resistant

✔ ✘

3.6.5 Stain Resistant

✔ ✘

3.6.7 Wind Resistant

✔ ✘

3.6.9 Acid Resistant

✔ ✘

3.7 Appearance

Skeletal

Glassy, Vesicular and Foilated

4 Uses

4.1 Architecture

4.1.1 Interior Uses

Decorative Aggregates, Homes, Interior Decoration

Decorative Aggregates, Entryways, Homes, Interior Decoration

4.1.2 Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone

As Building Stone, As Facing Stone, Office Buildings

4.1.4 Other Architectural Uses

Curbing

5.1 Industry

5.2.1 Construction Industry

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

Landscaping, Manufacture of Magnesium and Dolomite Refractories, Used for flooring, stair treads, borders and window sills.

5.2.3 Medical Industry

Not Yet Used

5.3 Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Sculpture

5.4 Other Uses

5.4.1 Commercial Uses

Creating Artwork, Soil Conditioner, Source of Magnesia (MgO)

As armour rock for sea walls, Source of Magnesia (MgO), Used in aquariums

6 Types

6.1 Types

Peralkaline Nephelinite

Garnet Lherzolite

6.2 Features

Host Rock for Lead

6.3 Archaeological Significance

6.3.1 Monuments

Used

Not Yet Used

6.3.2 Famous Monuments

Data Not Available

Not Applicable

6.3.3 Sculpture

Used

6.3.4 Famous Sculptures

Data Not Available

6.3.5 Pictographs

Not Used

6.3.6 Petroglyphs

Not Used

6.3.7 Figurines

Used

6.4 Fossils

Absent

7 Formation

7.1 Formation

Nephelinite 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.

Lherzolite 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.

7.2 Composition

7.2.1 Mineral Content

Clinopyroxene, Nepheline, Plagioclase

Harzburgite, Olivine, Pyroxene, Pyrrhotite

7.2.2 Compound Content

Ca, CaO, Carbon, Cl, MgO

CaO, Cr, Chromium(III) Oxide, MgO

7.3 Transformation

7.3.1 Metamorphism

✔ ✘

7.3.2 Types of Metamorphism

Contact Metamorphism

Cataclastic Metamorphism, Contact Metamorphism

7.3.3 Weathering

✔ ✘

7.3.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

7.3.5 Erosion

✔ ✘

7.3.6 Types of Erosion

Chemical Erosion, Water Erosion, Wind Erosion

8 Properties

8.1 Physical Properties

8.1.1 Hardness

6.56.5

1 7

8.1.8 Grain Size

Fine Grained

8.1.9 Fracture

Flat

Conchoidal

8.1.10 Streak

White

8.1.11 Porosity

Less Porous

8.1.12 Luster

Vitreous to Metallic

Subvitreous to Dull

8.1.13 Compressive Strength

35.00 N/mm²290.00 N/mm²

0.15 450

8.1.16 Cleavage

Imperfect

Perfect

8.1.18 Toughness

2.7

8.1.19 Specific Gravity

2.4-2.92.86

0 8.4

8.1.20 Transparency

Opaque

8.1.21 Density

2.5-3 g/cm³2.8-2.9 g/cm³

0 1400

8.2 Thermal Properties

8.2.1 Specific Heat Capacity

0.88 kJ/Kg K0.95 kJ/Kg K

0.14 3.2

8.3.2 Resistance

Heat Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

9 Reserves

9.1 Deposits in Eastern Continents

9.1.1 Asia

Japan

Russia, South Korea

9.1.2 Africa

Rwanda, Tanzania

Western Africa

9.1.3 Europe

Not Yet Found

United Kingdom

9.1.4 Others

Hawaii Islands

Not Yet Found

9.2 Deposits in Western Continents

9.2.1 North America

Canada, USA

USA

9.2.2 South America

Colombia

Not Yet Found

9.3 Deposits in Oceania Continent

9.3.1 Australia

Not Yet Found

Central Australia, Western Australia

All about Nephelinite and Lherzolite Properties

Know all about Nephelinite and Lherzolite properties here. All properties of rocks are important as they define the type of rock and its application. Nephelinite and Lherzolite belong to Igneous Rocks.Texture of Nephelinite is Aphanitic whereas that of Lherzolite is Grenue. Nephelinite appears Skeletal and Lherzolite appears Glassy, Vesicular and Foilated. The luster of Nephelinite is vitreous to metallic while that of Lherzolite is subvitreous to dull. Nephelinite is available in black, brown, colourless, green, grey, white colors whereas Lherzolite is available in black, dark greenish - grey, green, pink, purple colors. The commercial uses of Nephelinite are creating artwork, soil conditioner, source of magnesia (mgo) and that of Lherzolite are as armour rock for sea walls, source of magnesia (mgo), used in aquariums.