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Evaporite vs Obsidian


Obsidian vs Evaporite


Definition

Definition
A water-soluble mineral sediment resulting from concentration and crystallization by evaporation from an aqueous solution   
Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth   

History
  
  

Origin
USA   
Ethiopia   

Discoverer
Usiglio   
Obsius   

Etymology
From a sediment left after the evaporation   
From Latin obsidianus, misprint of Obsianus (lapis) (stone) of Obsius   

Class
Sedimentary Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Soft Rock   
Durable Rock, Medium Hardness Rock   

Family
  
  

Group
Not Applicable   
Volcanic   

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

Texture

Texture
Earthy   
Glassy   

Color
Colourless, Green, Grey, Silver, White   
Black, Blue, Brown, Green, Orange, Red, Tan, Yellow   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
No   
Yes   

Stain Resistant
No   
No   

Wind Resistant
Yes   
No   

Acid Resistant
No   
No   

Appearance
Glassy, Vesicular and Foilated   
Shiny   

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing   
Not Yet Used   

Industry
  
  

Construction Industry
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   
Arrowheads, Cutting Tool, Knives, Scrapers, Spear Points   

Medical Industry
Taken as a Supplement for Calcium or Magnesium   
Surgery   

Antiquity Uses
Artifacts   
Artifacts, Jewellery   

Other Uses
  
  

Commercial Uses
Used in the manufacture of Ceramic Powder, Used in the preparation of Sulfuric Acid and Silicon Diborite   
Creating Artwork, Mirror, Used in aquariums   

Types

Types
Not Available   
Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian   

Features
Generally rough to touch, Splintery, Veined   
Blocks negativity, Helps to protect against depression   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Not Yet Used   

Famous Monuments
Not Applicable   
Not Applicable   

Sculpture
Not Yet Used   
Not Yet Used   

Famous Sculptures
Not Applicable   
Not Applicable   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Not Yet Used   
Not Yet Used   

Fossils
Present   
Absent   

Formation

Formation
Evaporite is water-soluble mineral sediment which forms from concentration and crystallization by evaporation from an aqueous solution.   
When the lava is released from volcano, it undergoes a very rapid cooling which freezes the mechanisms of crystallization. The result is a volcanic glass with a uniform smooth texture.   

Composition
  
  

Mineral Content
Calcite, Cancrinite, Gypsum, Kyanite, Magnetite   
Not Available   

Compound Content
CaMg(CO3)2, CaO, Calcium Sulfate, KCl, MgO, NaCl   
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide   

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism   
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism   

Weathering
No   
Yes   

Types of Weathering
Not Applicable   
Biological Weathering, Chemical Weathering, Mechanical Weathering   

Erosion
No   
Yes   

Types of Erosion
Not Applicable   
Chemical Erosion, Coastal Erosion, Glacier Erosion   

Properties

Physical Properties
  
  

Hardness
2-3   
5-5.5   

Grain Size
Medium to Fine Coarse Grained   
Not Applicable   

Fracture
Conchoidal   
Conchoidal   

Streak
White   
White   

Porosity
Less Porous   
Very Less Porous   

Luster
Subvitreous to Dull   
Vitreous   

Compressive Strength
225.00 N/mm2   
7
0.15 N/mm2   
33

Cleavage
Perfect   
Non-Existent   

Toughness
Not Available   
Not Available   

Specific Gravity
2.86-2.99   
2.6-2.7   

Transparency
Translucent   
Translucent   

Density
2.8-2.9 g/cm3   
2.6 g/cm3   

Thermal Properties
  
  

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

Resistance
Heat Resistant, Pressure Resistant   
Heat Resistant, Impact Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
Not Available   
Afghanistan, Indonesia, Japan, Russia   

Africa
Not Available   
Kenya   

Europe
United Kingdom   
Greece, Hungary, Iceland, Italy, Turkey   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
USA   
Canada, Mexico, USA   

South America
Colombia, Paraguay   
Argentina, Chile, Ecuador, Peru   

Deposits in Oceania Continent
  
  

Australia
Central Australia, Western Australia   
New Zealand   

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Evaporite vs Obsidian 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 Evaporite and Obsidian Reserves. A water-soluble mineral sediment resulting from concentration and crystallization by evaporation from an aqueous solution. Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock. It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. 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 Evaporite vs Obsidian information and Evaporite vs Obsidian characteristics in the upcoming sections.

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Evaporite vs Obsidian 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. Evaporite vs Obsidian characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Evaporite and Properties of Obsidian. Learn more about Evaporite vs Obsidian in the next section. The interior uses of Evaporite include Decorative aggregates, Entryways, Flooring, Homes and Interior decoration whereas the interior uses of Obsidian include Decorative aggregates and Interior decoration. Due to some exceptional properties of Evaporite and Obsidian, they have various applications in construction industry. The uses of Evaporite in construction industry 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 and that of Obsidian include Arrowheads, Cutting tool, Knives, Scrapers, Spear points.

More about Evaporite and Obsidian

Here you can know more about Evaporite and Obsidian. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Evaporite and Obsidian consists of mineral content and compound content. The mineral content of Evaporite includes Calcite, Cancrinite, Gypsum, Kyanite, Magnetite and mineral content of Obsidian is not available. You can also check out the list of all Sedimentary Rocks. When we have to compare Evaporite vs Obsidian, the texture, color and appearance plays an important role in determining the type of rock. Evaporite is available in colourless, green, grey, silver, white colors whereas, Obsidian is available in black, blue, brown, green, orange, red, tan, yellow colors. Appearance of Evaporite is Glassy, Vesicular and Foilated and that of Obsidian is Shiny. Properties of rock is another aspect for Evaporite vs Obsidian. The hardness of Evaporite is 2-3 and that of Obsidian is 5-5.5. The types of Evaporite are Not Available whereas types of Obsidian are Fireworks Obsidian, Mahogany, Sheen Obsidian, Snowflake obsidian and Velvet Peacock Obsidian. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Evaporite and Obsidian is white. The specific heat capacity of Evaporite is 0.92 kJ/Kg K and that of Obsidian 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.Evaporite is heat resistant, pressure resistant whereas Obsidian is heat resistant, impact resistant.

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