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Marl vs Dacite


Dacite vs Marl


Definition

Definition
Marl is an unconsolidated sedimentary rock consisting of clay and lime   
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite   

History
  
  

Origin
Unknown   
Romania and Moldova, Europe   

Discoverer
Unknown   
Unknown   

Etymology
From Old French marle, from Late Latin marglia   
From Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described   

Class
Sedimentary Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Volcanic   

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

Texture

Texture
Earthy   
Aphanitic to Porphyritic   

Color
Beige, Brown, Green, Grey, White   
Bluish - Grey, Brown, Grey, Light to Dark Grey   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
No   

Scratch Resistant
No   
No   

Stain Resistant
No   
No   

Wind Resistant
No   
No   

Acid Resistant
No   
No   

Appearance
Rough and Dull   
Vesicular   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles   
Decorative Aggregates, Entryways, Interior Decoration   

Exterior Uses
As Building Stone, Roof Tiles   
As Building Stone, Paving Stone, Garden Decoration   

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar   
As Dimension Stone, Construction Aggregate, for Road Aggregate, Landscaping   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Jewellery, Sculpture, Small Figurines   
Artifacts   

Other Uses
  
  

Commercial Uses
Creating Artwork, Soil Conditioner   
Commemorative Tablets, Creating Artwork   

Types

Types
Clay Marl ,Blue Marl, Red Marl, High Bank Marl, Shell Layer Marl, Under Shell Layer Marl, Sand Marl, Green Marl, Grey Marl and Clayey Marl   
Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite   

Features
Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock   
Host Rock for Lead, Is one of the oldest rock   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Not Yet Used   

Famous Monuments
Not Applicable   
Not Applicable   

Sculpture
Used   
Not Yet Used   

Famous Sculptures
Data Not Available   
Not Applicable   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Used   
Not Yet Used   

Fossils
Present   
Absent   

Formation

Formation
Marl forms when very fine-grained clay particles are deposited in water which settles at the bottom of water bodies and are compacted by overlying sediment; the water squeezes out and hence forming Marl rock.   
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
Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz   
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon   

Compound Content
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide   
Ca, Fe, Potassium Oxide, Mg, Potassium, Silicon Dioxide   

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Burial Metamorphism, Cataclastic Metamorphism   

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
2-3   
2-2.25   

Grain Size
Very fine-grained   
Medium to Fine Coarse Grained   

Fracture
Conchoidal   
Conchoidal   

Streak
White   
White   

Porosity
Highly Porous   
Less Porous   

Luster
Dull   
Subvitreous to Dull   

Cleavage
Not Available   
Perfect   

Toughness
2.6   
Not Available   

Specific Gravity
2.2-2.8   
2.86-2.87   

Transparency
Opaque   
Translucent   

Density
2.4-2.8 g/cm3   
2.77-2.771 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.92 kJ/Kg K   
10

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

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Pakistan, Russia   
Not Yet Found   

Africa
Ethiopia, Kenya, Morocco, South Africa   
Not Yet Found   

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

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
USA   
USA   

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

Deposits in Oceania Continent
  
  

Australia
New South Wales, Victoria, Western Australia   
New Zealand, South Australia, Western Australia   

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Marl 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 Marl and Dacite Reserves. Marl is an unconsolidated sedimentary rock consisting of clay and lime. 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 Marl vs Dacite information and Marl vs Dacite characteristics in the upcoming sections.

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Marl 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. Marl vs Dacite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Marl and Properties of Dacite. Learn more about Marl vs Dacite in the next section. The interior uses of Marl include Decorative aggregates and Floor tiles whereas the interior uses of Dacite include Decorative aggregates, Entryways and Interior decoration. Due to some exceptional properties of Marl and Dacite, they have various applications in construction industry. The uses of Marl in construction industry include Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar and that of Dacite include As dimension stone, Construction aggregate, For road aggregate, Landscaping.

More about Marl and Dacite

Here you can know more about Marl and Dacite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Marl and Dacite consists of mineral content and compound content. The mineral content of Marl includes Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz 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 Sedimentary Rocks. When we have to compare Marl vs Dacite, the texture, color and appearance plays an important role in determining the type of rock. Marl is available in beige, brown, green, grey, white colors whereas, Dacite is available in bluish - grey, brown, grey, light to dark grey colors. Appearance of Marl is Rough and Dull and that of Dacite is Vesicular. Properties of rock is another aspect for Marl vs Dacite. The hardness of Marl is 2-3 and that of Dacite is 2-2.25. The types of Marl are Clay Marl ,Blue Marl, Red Marl, High Bank Marl, Shell Layer Marl, Under Shell Layer Marl, Sand Marl, Green Marl, Grey Marl and Clayey Marl 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 Marl and Dacite is white. The specific heat capacity of Marl is Not Available 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.Marl is heat resistant, impact resistant whereas Dacite is heat resistant, impact resistant, pressure resistant, wear resistant.

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