Definition
During the impact melted material forming a breccia containing glass and crystal or lithic fragments together form Suevite rock.
  
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture
  
History
  
  
Origin
Canada, Germany
  
Unknown
  
Discoverer
Unknown
  
Unknown
  
Etymology
No etymologies found
  
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use
  
Class
Metamorphic Rocks
  
Sedimentary Rocks
  
Sub-Class
Durable Rock, Medium Hardness Rock
  
Durable Rock, Hard Rock
  
Family
  
  
Group
Not Applicable
  
Not Applicable
  
Other Categories
Coarse Grained Rock, Opaque Rock
  
Fine Grained Rock, Opaque Rock
  
Texture
Earthy
  
Banded, Rough
  
Color
Black, Brown, Colourless, Green, Grey, Pink
  
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
No
  
No
  
Acid Resistant
No
  
Yes
  
Appearance
Banded
  
Glassy or Pearly
  
Architecture
  
  
Interior Uses
Decorative Aggregates, Homes, Interior Decoration
  
Decorative Aggregates, Homes
  
Exterior Uses
As Building Stone, As Facing 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, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories
  
Arrowheads, Construction Aggregate, Cutting Tool, Spear Points
  
Medical Industry
Not Applicable
  
Not Yet Used
  
Antiquity Uses
Artifacts, Monuments, Sculpture
  
Artifacts, Monuments
  
Other Uses
  
  
Commercial Uses
As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Source of Magnesia (MgO)
  
Creating Artwork, Gemstone, In fire-starting tools, Jewelry, To ignite fire, Used in flintlock firearms
  
Types
Phyllosilicates, Calcite
  
Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter
  
Features
Host Rock for Lead
  
Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate
  
Archaeological Significance
  
  
Monuments
Used
  
Used
  
Famous Monuments
Data Not Available
  
Data Not Available
  
Sculpture
Used
  
Not Yet Used
  
Famous Sculptures
Data Not Available
  
Not Applicable
  
Pictographs
Used
  
Not Used
  
Petroglyphs
Used
  
Not Used
  
Figurines
Used
  
Not Yet Used
  
Fossils
Absent
  
Present
  
Formation
Suevite is a metamorphic rock consisting partly of melted material, typically forming a breccia containing glass and crystal or lithic fragments, formed during an impact event.
  
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
Coesite, Quartz, Stishovite
  
Quartz, Silicon
  
Compound Content
CaO, Carbon Dioxide, MgO
  
Silicon Dioxide
  
Transformation
  
  
Metamorphism
Yes
  
No
  
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
  
Not Applicable
  
Weathering
No
  
No
  
Types of Weathering
Not Applicable
  
Not Applicable
  
Erosion
No
  
Yes
  
Types of Erosion
Not Applicable
  
Chemical Erosion
  
Physical Properties
  
  
Hardness
5.5
  
6.5-7
  
Grain Size
Coarse Grained
  
Very fine-grained
  
Fracture
Uneven
  
Uneven, Splintery or Conchoidal
  
Streak
Light to dark brown
  
White
  
Porosity
Less Porous
  
Highly Porous
  
Luster
Earthy
  
Waxy and Dull
  
Compressive Strength
Not Available
  
450.00 N/mm
2
  
1
Cleavage
Irregular
  
Non-Existent
  
Toughness
Not Available
  
1.5
  
Specific Gravity
2.86
  
2.5-2.8
  
Transparency
Opaque
  
Translucent to Opaque
  
Density
2.8-2.9 g/cm3
  
2.7 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
0.92 kJ/Kg K
  
10
0.74 kJ/Kg K
  
19
Resistance
Heat Resistant
  
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
  
Deposits in Eastern Continents
  
  
Asia
Not Yet Found
  
China, India, Iran, Japan, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
  
Africa
Not Yet Found
  
Kenya, Morocco, South Africa, Tanzania
  
Europe
England, France, Germany, Great Britain, Netherlands, Sweden, Switzerland, United Kingdom
  
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
Not Yet Found
  
Canada, Mexico, USA
  
South America
Not Yet Found
  
Bolivia, Brazil
  
Deposits in Oceania Continent
  
  
Australia
Not Yet Found
  
New South Wales, Queensland, South Australia, Western Australia