Definition
Tephrite is an aphanitic to porphyritic textured, volcanic igneous rock
A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles
Origin
Germany
European Foreland Basins
Discoverer
Van Tooren
Arnold H. Bouma
Etymology
From Greek tephra, ashes from Indo-European base, to burn
From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Fine Grained Rock, Opaque Rock
Texture
Aphanitic to Porphyritic
Mud-rich, Sandy
Color
Black, Brown, Green, Grey, White
Black, Brown, Green, Grey, Pink
Durability
Durable
Durable
Scratch Resistant
Yes
Yes
Appearance
Vesicular
Dull and Banded
Interior Uses
Decorative Aggregates, Flooring, Homes, Interior Decoration
Bathrooms, Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration
Other Architectural Uses
Curbing
Curbing
Construction Industry
Landscaping
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement
Antiquity Uses
Artifacts, Sculpture
Artifacts, Monuments, Sculpture
Commercial Uses
Production of Lime, Soil Conditioner
Cemetery Markers, Creating Artwork
Types
Igneous rock
Sedimentary rock
Features
Host Rock for Lead
High silica content, Host Rock for Lead
Archaeological Significance
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.
Turbidite is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. These particles then settle down and are subjected to high temperature and pressures hence forming Turbidite.
Mineral Content
Alkali feldspar, Nepheline, Plagioclase, Pyroxene
Coesite, Quartz, Sand
Compound Content
CaO, Carbon Dioxide, MgO, Silicon Dioxide
CaO, Carbon Dioxide, MgO
Types of Metamorphism
Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism
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Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion
Chemical Erosion, Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion
Grain Size
Medium to Fine Coarse Grained
Fine to Coarse Grained
Fracture
Uneven
Splintery
Streak
Bluish Black
White, Greenish White or Grey
Porosity
Very Less Porous
Very Less Porous
Luster
Subvitreous to Dull
Metallic
Cleavage
Crenulation and Pervasive
Disjunctive
Specific Gravity
2.86
2.46-2.73
Transparency
Opaque
Opaque
Density
2.8-2.9 g/cm3
1.6-2.5 g/cm3
Resistance
Heat Resistant, Impact Resistant
Heat Resistant
Deposits in Eastern Continents
Africa
Namibia, Uganda
Western Africa
Europe
Germany, Hungary, Italy, Portugal, Spain
Austria, Belarus, Romania, Switzerland, United Kingdom
Deposits in Western Continents
North America
USA
Canada, USA
South America
-
Brazil, Colombia
Deposits in Oceania Continent
Australia
New Zealand, Western Australia
New Zealand, Western Australia
Tephrite vs Turbidite Characteristics
Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Tephrite vs Turbidite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Tephrite and Properties of Turbidite. Learn more about Tephrite vs Turbidite in the next section. The interior uses of Tephrite include Decorative aggregates, Flooring, Homes and Interior decoration whereas the interior uses of Turbidite include Bathrooms, Countertops, Decorative aggregates, Flooring, Homes and Interior decoration. Due to some exceptional properties of Tephrite and Turbidite, they have various applications in construction industry. The uses of Tephrite in construction industry include Landscaping and that of Turbidite include As dimension stone, Cement manufacture, Construction aggregate, For road aggregate, Making natural cement.
More about Tephrite and Turbidite
Here you can know more about Tephrite and Turbidite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Tephrite and Turbidite consists of mineral content and compound content. The mineral content of Tephrite includes Alkali feldspar, Nepheline, Plagioclase, Pyroxene and mineral content of Turbidite includes Coesite, Quartz, Sand. You can also check out the list of all Igneous Rocks. When we have to compare Tephrite vs Turbidite, the texture, color and appearance plays an important role in determining the type of rock. Tephrite is available in black, brown, green, grey, white colors whereas, Turbidite is available in black, brown, green, grey, pink colors. Appearance of Tephrite is Vesicular and that of Turbidite is Dull and Banded. Properties of rock is another aspect for Tephrite vs Turbidite. The hardness of Tephrite is 6.5 and that of Turbidite is 3. The types of Tephrite are Igneous rock whereas types of Turbidite are Sedimentary rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Tephrite is bluish black while that of Turbidite is white, greenish white or grey. The specific heat capacity of Tephrite is 0.92 kJ/Kg K and that of Turbidite is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Tephrite is heat resistant, impact resistant whereas Turbidite is heat resistant.