Nepheline Syenite

Metapelite

Nepheline Syenite and Metapelite

Nepheline Syenite

Metapelite

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1 Definition

1.1 Definition

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

Metapelite is an old and currently not widely used field geological term for a clay rich fine-grained clastic sediment or sedimentary rock, i.e. mud or a mudstone

1.2 History

1.2.1 Origin

Unknown

1.2.2 Discoverer

Unknown

1.3 Etymology

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

From Pelos or clay in Greek

1.4 Class

Igneous Rocks

Metamorphic Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Plutonic

Not Applicable

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Granular

Foliated

2.2 Color

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

Dark Greenish - Grey, Green, Light Green, Light Greenish Grey

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

81% Igneous Rocks Rocks have it !

✔ ✘

81% Metamorphic Rocks Rocks have it !

2.4.2 Scratch Resistant

✔ ✘

86% Igneous Rocks Rocks have it !

✔ ✘

65% Metamorphic Rocks Rocks have it !

2.4.3 Stain Resistant

✔ ✘

66% Igneous Rocks Rocks have it !

✔ ✘

42% Metamorphic Rocks Rocks have it !

2.4.4 Wind Resistant

✔ ✘

49% Igneous Rocks Rocks have it !

✔ ✘

19% Metamorphic Rocks Rocks have it !

2.4.5 Acid Resistant

✔ ✘

48% Igneous Rocks Rocks have it !

✔ ✘

15% Metamorphic Rocks Rocks have it !

2.5 Appearance

Banded and Foilated

Banded

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

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

Cement Manufacture, Construction Aggregate, for Road Aggregate

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers, Creating Artwork

Commemorative Tablets, Creating Artwork

4 Types

4.1 Types

Borolanite and Litchfieldite

Not Available

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

Easily splits into thin plates, It is One of the Oldest, Strongest and Hardest Rock

4.3 Archaeological Significance

4.3.1 Monuments

Used

Not Yet Used

4.3.2 Famous Monuments

Data Not Available

Not Applicable

4.3.3 Sculpture

Used

Not Yet Used

4.3.4 Famous Sculptures

Data Not Available

Not Applicable

4.3.5 Pictographs

Used

4.3.6 Petroglyphs

Used

4.3.7 Figurines

Used

Not Yet 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.

Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Metapelite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

5.2 Composition

5.2.1 Mineral Content

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

Albite, Chlorite, Quartz

5.2.2 Compound Content

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

Aluminium Oxide, CaO, MgO

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

97% Igneous Rocks Rocks have it !

✔ ✘

50% Metamorphic Rocks Rocks have it !

5.3.2 Types of Metamorphism

Burial Metamorphism, Impact Metamorphism

Not Applicable

5.3.3 Weathering

✔ ✘

99% Igneous Rocks Rocks have it !

✔ ✘

65% Metamorphic Rocks Rocks have it !

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

92% Igneous Rocks Rocks have it !

✔ ✘

77% Metamorphic Rocks Rocks have it !

5.3.6 Types of Erosion

Chemical Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

5.5-6

5-6

6.1.2 Grain Size

Fine Grained

Medium to Fine Coarse Grained

6.1.3 Fracture

Conchoidal to Uneven

Fibrous

6.1.4 Streak

White

Unknown

6.1.5 Porosity

Less Porous

Highly Porous

6.1.6 Luster

Greasy to Dull

Earthy

6.1.7 Compressive Strength

What Is Flint

⊕

▶

▼

150.00 N/mm²

Rank: 14 (Overall)▶

Not Available

Rank: N/A (Overall)▶

▲

What Is Obsidian

⊕

▶

175 (What Is Grani..)

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6.1.8 Cleavage

Poor

Not Available

6.1.9 Toughness

Not Available

6.1.10 Specific Gravity

2.6

3.4-3.7

6.1.11 Transparency

Translucent to Opaque

Opaque

6.1.12 Density

2.6 g/cm³

0-300 g/cm³

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

What Is Banded ..

⊕

▶

▼

Not Available

Rank: N/A (Overall)▶

0.72 kJ/Kg K

Rank: 20 (Overall)▶

▲

What Is Granulite

⊕

▶

1.09 (What Is Trave..)

◀ ▶ ADD ⊕

6.2.2 Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure 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

Not Yet Found

7.1.2 Africa

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

Western Africa

7.1.3 Europe

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

United Kingdom

7.1.4 Others

Greenland

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada, USA

Not Available

7.2.2 South America

Brazil, Chile, Colombia, Uruguay, Venezuela

Brazil, Colombia, Ecuador

7.3 Deposits in Oceania Continent

7.3.1 Australia

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

Central Australia, Western Australia

All about Nepheline Syenite and Metapelite Properties

Know all about Nepheline Syenite and Metapelite properties here. All properties of rocks are important as they define the type of rock and its application. Nepheline Syenite belongs to Igneous Rocks while Metapelite belongs to Metamorphic Rocks.Texture of Nepheline Syenite is Granular whereas that of Metapelite is Foliated. Nepheline Syenite appears Banded and Foilated and Metapelite appears Banded. The luster of Nepheline Syenite is greasy to dull while that of Metapelite is earthy. Nepheline Syenite is available in brown, buff, cream, green, grey, pink, white colors whereas Metapelite is available in dark greenish - grey, green, light green, light greenish grey colors. The commercial uses of Nepheline Syenite are cemetery markers, creating artwork and that of Metapelite are commemorative tablets, creating artwork.