Tephrite

Wehrlite

Tephrite and Wehrlite

Tephrite

Wehrlite

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1 Definition

1.1 Definition

Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock

Wehrlite is an ultramafic and ultrabasic rock that is a mixture of olivine and clinopyroxene. It is a subdivision of the peridotites

1.2 History

1.2.1 Origin

Germany

Egypt

1.2.2 Discoverer

Van Tooren

Alois Wehrle

1.3 Etymology

From Greek tephra, ashes from Indo-European base, to burn

From the name of a professor, Alois Wehrle

1.4 Class

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Volcanic

Plutonic

1.6 Other Categories

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

Coarse Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Aphanitic to Porphyritic

Banded

2.2 Color

Black, Brown, Colourless, Green, Grey, White

Dark Greenish - Grey, Green

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

Vesicular

Rough and Banded

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Flooring, Homes, Interior Decoration

Decorative Aggregates, Interior Decoration

3.1.2 Exterior Uses

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

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

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

Landscaping

As Dimension Stone, Cobblestones

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Sculpture

Artifacts, Monuments, Sculpture, Small Figurines

3.4 Other Uses

3.4.1 Commercial Uses

Production of Lime, Soil Conditioner

Cemetery Markers, Creating Artwork, Gemstone, Jewelry

4 Types

4.1 Types

Not Available

4.2 Features

Host Rock for Lead

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

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Not Applicable

Data Not Available

4.3.3 Sculpture

Used

4.3.4 Famous Sculptures

Data Not Available

4.3.5 Pictographs

Not Used

Used

4.3.6 Petroglyphs

Not Used

Used

4.3.7 Figurines

Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

Tephrite 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.

Wehrlite 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.

5.2 Composition

5.2.1 Mineral Content

Alkali feldspar, Nepheline, Plagioclase, Pyroxene

Pyroxene

5.2.2 Compound Content

CaO, Carbon Dioxide, MgO, Silicon Dioxide

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

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

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

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion

Chemical Erosion, Coastal Erosion, Water Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

6.55.5-6

1 7

6.1.2 Grain Size

Medium to Fine Coarse Grained

Coarse Grained

6.1.3 Fracture

Uneven

Irregular

6.1.4 Streak

Bluish Black

White

6.1.5 Porosity

Very Less Porous

Less Porous

6.1.6 Luster

Subvitreous to Dull

Metallic

6.1.7 Compressive Strength

90.00 N/mm²NA

0.15 450

6.1.8 Cleavage

Crenulation and Pervasive

Perfect

6.1.9 Toughness

2.4

2.1

6.1.10 Specific Gravity

2.868.4

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

2.8-2.9 g/cm³2.6-3.7 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

0.92 kJ/Kg K0.63 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

Not Yet Found

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

7.1.2 Africa

Namibia, Uganda

Morocco, South Africa

7.1.3 Europe

Germany, Hungary, Italy, Portugal, Spain

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

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

USA

Canada, USA

7.2.2 South America

Not Yet Found

Brazil

7.3 Deposits in Oceania Continent

7.3.1 Australia

New Zealand, Western Australia

All about Tephrite and Wehrlite Properties

Know all about Tephrite and Wehrlite properties here. All properties of rocks are important as they define the type of rock and its application. Tephrite and Wehrlite belong to Igneous Rocks.Texture of Tephrite is Aphanitic to Porphyritic whereas that of Wehrlite is Banded. Tephrite appears Vesicular and Wehrlite appears Rough and Banded. The luster of Tephrite is subvitreous to dull while that of Wehrlite is metallic. Tephrite is available in black, brown, colourless, green, grey, white colors whereas Wehrlite is available in dark greenish - grey, green colors. The commercial uses of Tephrite are production of lime, soil conditioner and that of Wehrlite are cemetery markers, creating artwork, gemstone, jewelry.