Nepheline Syenite

Peridotite

Nepheline Syenite and Peridotite

Nepheline Syenite

Peridotite

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1 Definition

1.1 Definition

Nepheline Syenite is a holocrystalline plutonic rock resembling syenite but containing nepheline and lacking quartz

Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle

1.2 History

1.2.1 Origin

Unknown

Pike County, U.S

1.2.2 Discoverer

Unknown

1.3 Etymology

From origin of a Palaeozoic nepheline syenite from northern Shanxi Province, China

From French, from peridot +‎ -ite

1.4 Class

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Plutonic

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Granular

Phaneritic

2.2 Color

Brown, Buff, Cream, Green, Grey, Pink, White

Dark Greenish - Grey

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Banded and Foilated

Rough and Shiny

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration

Decorative Aggregates, Interior Decoration

3.1.2 Exterior Uses

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

As Building Stone, As Facing Stone, Garden Decoration

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics

As Dimension Stone, Cobblestones

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Monuments, Sculpture

Monuments, Sculpture, Small Figurines

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers, Creating Artwork

Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds

4 Types

4.1 Types

Borolanite and Litchfieldite

Dunite, Wehrlite, Harzburgite, Lherzolite and Pyrolite

4.2 Features

Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock

Constitutes upper part of the Earth's mantle, Generally rough to touch, Host rock for Diamond, Is one of the oldest rock

4.3 Archaeological Significance

4.3.1 Monuments

Used

4.3.2 Famous Monuments

Data Not Available

4.3.3 Sculpture

Used

4.3.4 Famous Sculptures

Data Not Available

4.3.5 Pictographs

Used

4.3.6 Petroglyphs

Used

4.3.7 Figurines

Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

Nepheline Syenites are formed due to alkaline igneous activities and are generally formed in thick continental crustal areas or in Cordilleran subduction zones.

Peridotites can be formed in two ways: as mantle rocks formed during the accretion and differentiation of the Earth or as cumulate rocks formed by precipitation of olivine and pyroxenes from basaltic magmas.

5.2 Composition

5.2.1 Mineral Content

Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite

Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene

5.2.2 Compound Content

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

Ca, Fe, Mg, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Burial Metamorphism, Impact Metamorphism

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

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Chemical Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

5.5-65.5-6

1 7

6.1.2 Grain Size

Fine Grained

Coarse Grained

6.1.3 Fracture

Conchoidal to Uneven

Irregular

6.1.4 Streak

White

6.1.5 Porosity

Less Porous

6.1.6 Luster

Greasy to Dull

Shiny

6.1.7 Compressive Strength

150.00 N/mm²107.55 N/mm²

0.15 450

6.1.8 Cleavage

Poor

Imperfect

6.1.9 Toughness

Not Available

2.1

6.1.10 Specific Gravity

2.63-3.01

0 8.4

6.1.11 Transparency

Translucent to Opaque

6.1.12 Density

2.6 g/cm³3.1-3.4 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NA1.26 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

Indonesia, Iran, Russia, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Turkmenistan, Vietnam

China, India, Indonesia, Kazakhstan, Russia, South Korea, Thailand, Turkey

7.1.2 Africa

Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

Morocco, South Africa

7.1.3 Europe

Andorra, Finland, France, Great Britain, Italy, Norway, Portugal, Spain, Sweden

Finland, France, Georgia, Germany, Great Britain, Italy, Kazakhstan, Netherlands, Norway, Spain, Switzerland, Venezuela

7.1.4 Others

Greenland

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada, USA

7.2.2 South America

Brazil, Chile, Colombia, Uruguay, Venezuela

Brazil

7.3 Deposits in Oceania Continent

7.3.1 Australia

New Zealand, Queensland, South Australia, Tasmania, Western Australia

New Zealand, Western Australia

All about Nepheline Syenite and Peridotite Properties

Know all about Nepheline Syenite and Peridotite properties here. All properties of rocks are important as they define the type of rock and its application. Nepheline Syenite and Peridotite belong to Igneous Rocks.Texture of Nepheline Syenite is Granular whereas that of Peridotite is Phaneritic. Nepheline Syenite appears Banded and Foilated and Peridotite appears Rough and Shiny. The luster of Nepheline Syenite is greasy to dull while that of Peridotite is shiny. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Peridotite is available in dark greenish - grey colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Peridotite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.