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Dacite vs Dolomite


Dolomite vs Dacite


Definition

Definition
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite  
Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight  

History
  
  

Origin
Romania and Moldova, Europe  
Southern Alps, France  

Discoverer
Unknown  
Dolomieu  

Etymology
From Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described  
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, Soft Rock  
Durable Rock, Medium Hardness Rock  

Family
  
  

Group
Volcanic  
-  

Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock  
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock  

Texture

Texture
Aphanitic to Porphyritic  
Earthy  

Color
Bluish - Grey, Brown, Grey, Light to Dark Grey  
Black, Brown, Green, Grey, Pink, White  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
No  
No  

Scratch Resistant
No  
Yes  

Stain Resistant
No  
No  

Wind Resistant
No  
No  

Acid Resistant
No  
No  

Appearance
Vesicular  
Glassy or Pearly  

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Entryways, Interior Decoration  
Decorative Aggregates, Homes, Interior Decoration  

Exterior Uses
As Building Stone, Paving Stone, Garden Decoration  
Garden Decoration, Office Buildings  

Other Architectural Uses
Curbing  
-  

Industry
  
  

Construction Industry
As Dimension Stone, Construction Aggregate, for Road Aggregate, Landscaping  
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  
Artifacts, Jewellery, Monuments, Sculpture, Small Figurines  

Other Uses
  
  

Commercial Uses
Commemorative Tablets, 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
Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite  
Boninite and Jasperoid  

Features
Host Rock for Lead, Is one of the oldest rock  
Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Present  

Formation

Formation
Dacitic magma is formed by the subduction of young oceanic crust under a thick felsic continental plate. Further, the Oceanic crust is hydrothermally altered as quartz and sodium are added.   
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
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon  
Clay Minerals, Pyrite, Quartz, Sulfides  

Compound Content
Ca, Fe, Potassium Oxide, Mg, Potassium, Silicon Dioxide  
NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO  

Transformation
  
  

Metamorphism
Yes  
Yes  

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism  
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism  

Weathering
Yes  
No  

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering  
-  

Erosion
Yes  
No  

Types of Erosion
Chemical Erosion  
-  

Properties

Physical Properties
  
  

Hardness
2-2.25  
3.5-4  

Grain Size
Medium to Fine Coarse Grained  
Medium to Fine Coarse Grained  

Fracture
Conchoidal  
Conchoidal  

Streak
White  
White  

Porosity
Less Porous  
Less Porous  

Luster
Subvitreous to Dull  
Vitreous and Pearly  

Compressive Strength
70.00 N/mm2  
35
140.00 N/mm2  
23

Cleavage
Perfect  
Perfect  

Toughness
-  
1  

Specific Gravity
2.86-2.87  
2.8-3  

Transparency
Translucent  
Transparent to Translucent  

Density
2.77-2.771 g/cm3  
2.8-2.9 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.92 kJ/Kg K  
10
0.92 kJ/Kg K  
10

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

Reserves

Deposits in Eastern Continents
  
  

Asia
-  
China, India  

Africa
-  
Morocco, Namibia  

Europe
France, Greece, Romania, Scotland, Spain  
Austria, Italy, Romania, Spain, Switzerland  

Others
-  
-  

Deposits in Western Continents
  
  

North America
USA  
Mexico, USA  

South America
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela  
Brazil, Colombia  

Deposits in Oceania Continent
  
  

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

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Dacite 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 Dacite and Dolomite Reserves. Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite. 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 Dacite vs Dolomite information and Dacite vs Dolomite characteristics in the upcoming sections.

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Dacite 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. Dacite vs Dolomite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Dacite and Properties of Dolomite. Learn more about Dacite vs Dolomite in the next section. The interior uses of Dacite include Decorative aggregates, Entryways and Interior decoration whereas the interior uses of Dolomite include Decorative aggregates, Homes and Interior decoration. Due to some exceptional properties of Dacite and Dolomite, they have various applications in construction industry. The uses of Dacite in construction industry include As dimension stone, Construction aggregate, For road aggregate, Landscaping 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 Dacite and Dolomite

Here you can know more about Dacite and Dolomite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Dacite and Dolomite consists of mineral content and compound content. The mineral content of Dacite includes Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon 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 Dacite vs Dolomite, the texture, color and appearance plays an important role in determining the type of rock. Dacite is available in bluish - grey, brown, grey, light to dark grey colors whereas, Dolomite is available in black, brown, green, grey, pink, white colors. Appearance of Dacite is Vesicular and that of Dolomite is Glassy or Pearly. Properties of rock is another aspect for Dacite vs Dolomite. The hardness of Dacite is 2-2.25 and that of Dolomite is 3.5-4. The types of Dacite are Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite 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 Dacite and Dolomite is white. The specific heat capacity of Dacite is 0.92 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.Dacite is heat resistant, impact resistant, pressure resistant, wear resistant whereas Dolomite is heat resistant, pressure resistant, wear resistant.

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