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Lherzolite vs Dacite


Dacite vs Lherzolite


Definition

Definition
Lherzolite is a type of ultramafic igneous rock which contains essential olivine and clinopyroxene and orthopyroxene in equal proportions  
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite  

History
  
  

Origin
France  
Romania and Moldova, Europe  

Discoverer
Unknown  
Unknown  

Etymology
From the Lherz Massif, an alpine peridotite complex, at Étang de Lers, near Massat in the French Pyrenees; Lherz is the archaic spelling of this location  
From Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described  

Class
Igneous Rocks  
Igneous Rocks  

Sub-Class
Durable Rock, Hard Rock  
Durable Rock, Soft Rock  

Family
  
  

Group
Plutonic  
Volcanic  

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

Texture

Texture
Grenue  
Aphanitic to Porphyritic  

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

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
No  
No  

Scratch Resistant
Yes  
No  

Stain Resistant
Yes  
No  

Wind Resistant
No  
No  

Acid Resistant
Yes  
No  

Appearance
Glassy, Vesicular and Foilated  
Vesicular  

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
Landscaping, Manufacture of Magnesium and Dolomite Refractories, Used for flooring, stair treads, borders and window sills.  
As Dimension Stone, Construction Aggregate, for Road Aggregate, Landscaping  

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Sculpture  
Artifacts  

Other Uses
  
  

Commercial Uses
As armour rock for sea walls, Source of Magnesia (MgO), Used in aquariums  
Commemorative Tablets, Creating Artwork  

Types

Types
Garnet Lherzolite  
Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite  

Features
Host Rock for Lead  
Host Rock for Lead, Is one of the oldest rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Lherzolite 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.  
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.   

Composition
  
  

Mineral Content
Harzburgite, Olivine, Pyroxene, Pyrrhotite  
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon  

Compound Content
CaO, Cr, Chromium(III) Oxide, MgO  
Ca, Fe, Potassium Oxide, Mg, Potassium, Silicon Dioxide  

Transformation
  
  

Metamorphism
Yes  
Yes  

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

Weathering
Yes  
Yes  

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

Erosion
Yes  
Yes  

Types of Erosion
Chemical Erosion, Water Erosion, Wind Erosion  
Chemical Erosion  

Properties

Physical Properties
  
  

Hardness
6.5  
2-2.25  

Grain Size
Fine Grained  
Medium to Fine Coarse Grained  

Fracture
Conchoidal  
Conchoidal  

Streak
White  
White  

Porosity
Less Porous  
Less Porous  

Luster
Subvitreous to Dull  
Subvitreous to Dull  

Compressive Strength
290.00 N/mm2  
3
70.00 N/mm2  
35

Cleavage
Perfect  
Perfect  

Toughness
2.7  
-  

Specific Gravity
2.86  
2.86-2.87  

Transparency
Opaque  
Translucent  

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

Thermal Properties
  
  

Specific Heat Capacity
0.95 kJ/Kg K  
9
0.92 kJ/Kg K  
10

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Russia, South Korea  
-  

Africa
Western Africa  
-  

Europe
United Kingdom  
France, Greece, Romania, Scotland, Spain  

Others
-  
-  

Deposits in Western Continents
  
  

North America
USA  
USA  

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

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia  
New Zealand, South Australia, Western Australia  

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Lherzolite vs Dacite 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 Lherzolite and Dacite Reserves. Lherzolite is a type of ultramafic igneous rock which contains essential olivine and clinopyroxene and orthopyroxene in equal proportions. Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite. 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 Lherzolite vs Dacite information and Lherzolite vs Dacite characteristics in the upcoming sections.

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Lherzolite vs Dacite 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. Lherzolite vs Dacite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Lherzolite and Properties of Dacite. Learn more about Lherzolite vs Dacite in the next section. The interior uses of Lherzolite include Decorative aggregates, Entryways, Homes and Interior decoration whereas the interior uses of Dacite include Decorative aggregates, Entryways and Interior decoration. Due to some exceptional properties of Lherzolite and Dacite, they have various applications in construction industry. The uses of Lherzolite in construction industry include Landscaping, Manufacture of magnesium and dolomite refractories, Used for flooring, stair treads, borders and window sills. and that of Dacite include As dimension stone, Construction aggregate, For road aggregate, Landscaping.

More about Lherzolite and Dacite

Here you can know more about Lherzolite and Dacite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Lherzolite and Dacite consists of mineral content and compound content. The mineral content of Lherzolite includes Harzburgite, Olivine, Pyroxene, Pyrrhotite and mineral content of Dacite includes Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon. You can also check out the list of all Igneous Rocks. When we have to compare Lherzolite vs Dacite, the texture, color and appearance plays an important role in determining the type of rock. Lherzolite is available in black, dark greenish - grey, green, pink, purple colors whereas, Dacite is available in bluish - grey, brown, grey, light to dark grey colors. Appearance of Lherzolite is Glassy, Vesicular and Foilated and that of Dacite is Vesicular. Properties of rock is another aspect for Lherzolite vs Dacite. The hardness of Lherzolite is 6.5 and that of Dacite is 2-2.25. The types of Lherzolite are Garnet Lherzolite whereas types of Dacite are Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Lherzolite and Dacite is white. The specific heat capacity of Lherzolite is 0.95 kJ/Kg K and that of Dacite 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.Lherzolite is heat resistant, impact resistant, pressure resistant, wear resistant whereas Dacite is heat resistant, impact resistant, pressure resistant, wear resistant.

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