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Hornblendite vs Chert


Chert vs Hornblendite


Definition

Definition
Hornblendite is a type of igneous plutonic rock consisting mainly of amphibole hornblende and is a type of Amphibolite rock   
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture   

History
  
  

Discoverer
Unknown   
Unknown   

Etymology
From German, Horn horn + blende   
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use   

Class
Igneous Rocks   
Sedimentary Rocks   

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

Family
  
  

Group
Plutonic   
Not Applicable   

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

Texture

Texture
Banded, Foliated, Massive   
Banded, Rough   

Color
Black, Brown, Green, Grey   
Black, Brown, Green, Grey, Red, White   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
No   
Yes   

Wind Resistant
Yes   
No   

Acid Resistant
No   
Yes   

Appearance
Foliated   
Glassy or Pearly   

Uses

Architecture
  
  

Interior Uses
Countertops, Decorative Aggregates, Entryways, Flooring, Homes, Hotels, Interior Decoration, Kitchens   
Decorative Aggregates, Homes   

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Building houses or walls, Cobblestones, Construction Aggregate, for Road Aggregate, Landscaping, Production of Glass and Ceramics, Roadstone   
Arrowheads, Construction Aggregate, Cutting Tool, Spear Points   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Sculpture, Small Figurines   
Artifacts, Monuments   

Other Uses
  
  

Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork   
Creating Artwork, Gemstone, In fire-starting tools, Jewelry, To ignite fire, Used in flintlock firearms   

Types

Types
Hornblende Gabbro and Hornblende Peridotite   
Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter   

Features
Clasts are smooth to touch, Matrix variable, Surfaces are often shiny   
Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Used   

Famous Monuments
Not Applicable   
Data Not Available   

Sculpture
Used   
Not Yet Used   

Famous Sculptures
Data Not Available   
Not Applicable   

Pictographs
Not Used   
Not Used   

Petroglyphs
Not Used   
Not Used   

Figurines
Used   
Not Yet Used   

Fossils
Absent   
Present   

Formation

Formation
Hornblendite 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.   
Chert forms when microcrystals of silicon dioxide grow within soft sediments that become limestone or chalk. The chert formation can be either of chemical or biological origin.   

Composition
  
  

Mineral Content
Amphibole, Calcite, Hornblade, Magnetite, Plagioclase, Wollastonite   
Quartz, Silicon   

Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide   
Silicon Dioxide   

Transformation
  
  

Metamorphism
No   
No   

Types of Metamorphism
Not Applicable   
Not Applicable   

Weathering
Yes   
No   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
6-7   
6.5-7   

Grain Size
Medium to Coarse Grained   
Very fine-grained   

Fracture
Irregular to Conchoidal   
Uneven, Splintery or Conchoidal   

Streak
White to Grey   
White   

Porosity
Less Porous   
Highly Porous   

Luster
Vitreous to Dull   
Waxy and Dull   

Compressive Strength
Not Available   
450.00 N/mm2   
1

Cleavage
Irregular   
Non-Existent   

Toughness
2.3   
1.5   

Specific Gravity
2.5   
2.5-2.8   

Transparency
Opaque   
Translucent to Opaque   

Density
2.85-3.07 g/cm3   
2.7 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.74 kJ/Kg K   
19

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

Reserves

Deposits in Eastern Continents
  
  

Asia
Russia, Turkey   
China, India, Iran, Japan, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam   

Africa
Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda   
Kenya, Morocco, South Africa, Tanzania   

Europe
Germany, Greece, Iceland, Norway, Poland   
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom   

Others
Not Yet Found   
Greenland, Mid-Atlantic Ridge   

Deposits in Western Continents
  
  

North America
Canada, USA   
Canada, Mexico, USA   

South America
Brazil   
Bolivia, Brazil   

Deposits in Oceania Continent
  
  

Australia
South Australia, Western Australia   
New South Wales, Queensland, South Australia, Western Australia   

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Hornblendite vs Chert 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 Hornblendite and Chert Reserves. Hornblendite is a type of igneous plutonic rock consisting mainly of amphibole hornblende and is a type of Amphibolite rock. Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture. 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 Hornblendite vs Chert information and Hornblendite vs Chert characteristics in the upcoming sections.

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Hornblendite vs Chert 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. Hornblendite vs Chert characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Hornblendite and Properties of Chert. Learn more about Hornblendite vs Chert in the next section. The interior uses of Hornblendite include Countertops, Decorative aggregates, Entryways, Flooring, Homes, Hotels, Interior decoration and Kitchens whereas the interior uses of Chert include Decorative aggregates and Homes. Due to some exceptional properties of Hornblendite and Chert, they have various applications in construction industry. The uses of Hornblendite in construction industry include As dimension stone, Building houses or walls, Cobblestones, Construction aggregate, For road aggregate, Landscaping, Production of glass and ceramics, Roadstone and that of Chert include Arrowheads, Construction aggregate, Cutting tool, Spear points.

More about Hornblendite and Chert

Here you can know more about Hornblendite and Chert. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Hornblendite and Chert consists of mineral content and compound content. The mineral content of Hornblendite includes Amphibole, Calcite, Hornblade, Magnetite, Plagioclase, Wollastonite and mineral content of Chert includes Quartz, Silicon. You can also check out the list of all Igneous Rocks. When we have to compare Hornblendite vs Chert, the texture, color and appearance plays an important role in determining the type of rock. Hornblendite is available in black, brown, green, grey colors whereas, Chert is available in black, brown, green, grey, red, white colors. Appearance of Hornblendite is Foliated and that of Chert is Glassy or Pearly. Properties of rock is another aspect for Hornblendite vs Chert. The hardness of Hornblendite is 6-7 and that of Chert is 6.5-7. The types of Hornblendite are Hornblende Gabbro and Hornblende Peridotite whereas types of Chert are Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Hornblendite is white to grey while that of Chert is white. The specific heat capacity of Hornblendite is Not Available and that of Chert is 0.74 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Hornblendite is heat resistant, pressure resistant, wear resistant whereas Chert is heat resistant, impact resistant, pressure resistant, wear resistant.

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