Home

Igneous Rocks + -

Fossil Rocks + -

Metamorphic Rocks + -

Durable Rocks + -

Medium Grained Rocks + -

Compare Rocks


Chert and Benmoreite


Benmoreite and Chert


Definition

Definition
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture   
An iron rich extrusive rock found as a member of the alkali basalt magma series   

History
  
  

Origin
Unknown   
Isle of Mull, Scotland   

Discoverer
Unknown   
Ben More   

Etymology
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use   
From the name of discoverer, Ben More   

Class
Sedimentary Rocks   
Igneous Rocks   

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

Family
  
  

Group
Not Applicable   
Volcanic   

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

Texture

Texture
Banded, Rough   
Glassy, Massive, Porphyritic, Scoriaceous, Trachytic, Vesicular   

Color
Black, Brown, Green, Grey, Red, White   
Black, Brown, Light to Dark Grey   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
No   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
Yes   

Wind Resistant
No   
No   

Acid Resistant
Yes   
No   

Appearance
Glassy or Pearly   
Rough and Dull   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Homes   
Floor Tiles, Homes, Hotels, Kitchens   

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
Arrowheads, Construction Aggregate, Cutting Tool, Spear Points   
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments   
Artifacts, Monuments, Sculpture   

Other Uses
  
  

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

Types

Types
Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter   
Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB) and Tholeiitic Basalt   

Features
Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate   
Has High structural resistance against erosion and climate, Very fine grained rock   

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Not Yet Used   
Used   

Famous Sculptures
Not Applicable   
Data Not Available   

Pictographs
Not Used   
Used   

Petroglyphs
Not Used   
Used   

Figurines
Not Yet Used   
Used   

Fossils
Present   
Absent   

Formation

Formation
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.   
Benmoreite is a type of Igneous rock which is formed through the cooling and solidification of lava or magma. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.   

Composition
  
  

Mineral Content
Quartz, Silicon   
Alkali feldspar, Biotite, Olivine, Plagioclase, Pyroxene, Sodic plagioclase   

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

Transformation
  
  

Metamorphism
No   
Yes   

Types of Metamorphism
Not Applicable   
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism   

Weathering
No   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
6.5-7   
6   

Grain Size
Very fine-grained   
Fine Grained   

Fracture
Uneven, Splintery or Conchoidal   
Conchoidal   

Streak
White   
Black   

Porosity
Highly Porous   
Less Porous   

Luster
Waxy and Dull   
Earthy   

Compressive Strength
450.00 N/mm2   
1
37.40 N/mm2   
28

Cleavage
Non-Existent   
Perfect   

Toughness
1.5   
2.3   

Specific Gravity
2.5-2.8   
2.8-3   

Transparency
Translucent to Opaque   
Opaque   

Density
2.7 g/cm3   
2.9-3.1 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.74 kJ/Kg K   
19
0.84 kJ/Kg K   
15

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

Reserves

Deposits in Eastern Continents
  
  

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

Africa
Kenya, Morocco, South Africa, Tanzania   
South Africa   

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

Others
Greenland, Mid-Atlantic Ridge   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, Mexico, USA   
Canada, USA   

South America
Bolivia, Brazil   
Brazil   

Deposits in Oceania Continent
  
  

Australia
New South Wales, Queensland, South Australia, Western Australia   
Not Yet Found   

Summary >>
<< Reserves

All about Chert and Benmoreite Properties

Know all about Chert and Benmoreite properties here. All properties of rocks are important as they define the type of rock and its application. Chert belongs to Sedimentary Rocks while Benmoreite belongs to Igneous Rocks.Texture of Chert is Banded, Rough whereas that of Benmoreite is Glassy, Massive, Porphyritic, Scoriaceous, Trachytic, Vesicular. Chert appears Glassy or Pearly and Benmoreite appears Rough and Dull. The luster of Chert is waxy and dull while that of Benmoreite is earthy. Chert is available in black, brown, green, grey, red, white colors whereas Benmoreite is available in black, brown, light to dark grey colors. The commercial uses of Chert are creating artwork, gemstone, in fire-starting tools, jewelry, to ignite fire, used in flintlock firearms and that of Benmoreite are commemorative tablets, creating artwork, curling.

Compare Sedimentary Rocks

Fossil Rocks

Fossil Rocks

» More Fossil Rocks

Compare Sedimentary Rocks

» More Compare Sedimentary Rocks