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Tuff
Tuff

Dolomite
Dolomite



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Tuff vs Dolomite

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Definition

Definition

Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption
Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight

History

Origin

Italy
Southern Alps, France

Discoverer

Unknown
Dolomieu

Etymology

From a Latin word tophous then in Italian tufo and finally tuff
From French, from the name of Dolomieu (1750–1801), the French geologist who discovered the rock

Class

Igneous Rocks
Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Medium Hardness Rock

Family

Group

Volcanic
-

Other Categories

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

Texture

Texture

Clastic, Pyroclastic
Earthy

Color

Brown, Grey, Yellow
Black, Brown, Green, Grey, Pink, White

Maintenance

More
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull, Vesicular and Foilated
Glassy or Pearly

Uses

Architecture

Interior Uses

Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration
Decorative Aggregates, Homes, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing
-

Industry

Construction Industry

Building houses or walls, Construction Aggregate
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics, Serves as an Oil and Gas Reservoir rock

Medical Industry

-
Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Jewellery, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Creating Artwork
An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)

Types

Types

Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff, Andesitic tuff and Ignimbrite.
Boninite and Jasperoid

Features

Always found as volcanic pipes over deep continental crust
Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits

Archaeological Significance

Monuments

-
-

Famous Monuments

Easter Island in the Polynesian Triangle, Pacific Ocean
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Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Present

Formation

Formation

Tuff is formed when large masses of ash and sand which are mixed with hot gases are ejected by a volcano and avalanche rapidly down its slopes.
Dolomite rocks are originally deposited as calcite or aragonite rich limestone, but during diagenesis process, the calcite or aragonite is transformed into dolomite.

Composition

Mineral Content

Calcite, Chlorite
Clay Minerals, Pyrite, Quartz, Sulfides

Compound Content

Hydrogen Sulfide, Sulfur Dioxide
NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO

Transformation

Metamorphism

Types of Metamorphism

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

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering
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Erosion

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
-

Properties

Physical Properties

Hardness

4-63.5-4
1 7
👆🏻

Grain Size

Fine Grained
Medium to Fine Coarse Grained

Fracture

Uneven
Conchoidal

Streak

White
White

Porosity

Highly Porous
Less Porous

Luster

Vitreous to Dull
Vitreous and Pearly

Compressive Strength

243.80 N/mm2140.00 N/mm2
0.15 450
👆🏻

Cleavage

-
Perfect

Toughness

-
1

Specific Gravity

2.732.8-3
0 8.4
👆🏻

Transparency

Opaque
Transparent to Translucent

Density

1-1.8 g/cm32.8-2.9 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.20 kJ/Kg K0.92 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Afghanistan, Armenia, Azerbaijan, Burma, Cambodia, China, India, Indonesia, Iran, Japan, Malaysia, Mongolia, Nepal, North Korea, Pakistan, Saudi Arabia, Syria, Taiwan, Thailand, Turkey, Vietnam, Yemen
China, India

Africa

Cameroon, Cape Verde, Eritrea, Ethiopia, Kenya, Libya, Madagascar, Nigeria, Rwanda, South Africa, Sudan, Uganda
Morocco, Namibia

Europe

France, Georgia, Germany, Greece, Iceland, Italy, Netherlands, Poland, Portugal, Spain, United Kingdom
Austria, Italy, Romania, Spain, Switzerland

Others

Antarctica, Hawaii Islands
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Deposits in Western Continents

North America

Canada, Costa Rica, Panama, USA
Mexico, USA

South America

Argentina, Bolivia, Brazil, Chile, Ecuador, Paraguay
Brazil, Colombia

Deposits in Oceania Continent

Australia

Central Australia, Western Australia
New South Wales, Queensland, Yorke Peninsula

Tuff vs Dolomite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Tuff and Dolomite Reserves. Tuff is a type of rock made of volcanic ash ejected from a vent during a volcanic eruption. Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Tuff vs Dolomite information and Tuff vs Dolomite characteristics in the upcoming sections.

Tuff vs Dolomite 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. Tuff vs Dolomite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Tuff and Properties of Dolomite. Learn more about Tuff vs Dolomite in the next section. The interior uses of Tuff include Decorative aggregates, Entryways, Flooring, Homes and Interior decoration whereas the interior uses of Dolomite include Decorative aggregates, Homes and Interior decoration. Due to some exceptional properties of Tuff and Dolomite, they have various applications in construction industry. The uses of Tuff in construction industry include Building houses or walls, Construction aggregate and that of Dolomite include As a flux in the production of steel and pig iron, As a sintering agent in steel industry to process iron ore, As dimension stone, Cement manufacture, For road aggregate, Making natural cement, Manufacture of magnesium and dolomite refractories, Production of glass and ceramics, Serves as an oil and gas reservoir rock.

More about Tuff and Dolomite

Here you can know more about Tuff and Dolomite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Tuff and Dolomite consists of mineral content and compound content. The mineral content of Tuff includes Calcite, Chlorite and mineral content of Dolomite includes Clay Minerals, Pyrite, Quartz, Sulfides. You can also check out the list of all Igneous Rocks. When we have to compare Tuff vs Dolomite, the texture, color and appearance plays an important role in determining the type of rock. Tuff is available in brown, grey, yellow colors whereas, Dolomite is available in black, brown, green, grey, pink, white colors. Appearance of Tuff is Dull, Vesicular and Foilated and that of Dolomite is Glassy or Pearly. Properties of rock is another aspect for Tuff vs Dolomite. The hardness of Tuff is 4-6 and that of Dolomite is 3.5-4. The types of Tuff are Welded tuff, Rhyolitic tuff, Basaltic tuff, Trachyte tuff, Andesitic tuff and Ignimbrite. whereas types of Dolomite are Boninite and Jasperoid. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Tuff and Dolomite is white. The specific heat capacity of Tuff is 0.20 kJ/Kg K and that of Dolomite 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.Tuff is heat resistant, impact resistant, pressure resistant, wear resistant whereas Dolomite is heat resistant, pressure resistant, wear resistant.