Definition
Origin
Discoverer
Etymology
Class
Sub-Class
Group
Other Categories
Texture
Color
Maintenance
Durability
Water Resistant
Scratch Resistant
Stain Resistant
Wind Resistant
Acid Resistant
Appearance
Interior Uses
Exterior Uses
Other Architectural Uses
Construction Industry
Medical Industry
Antiquity Uses
Commercial Uses
Types
Features
Monuments
Famous Monuments
Sculpture
Famous Sculptures
Pictographs
Petroglyphs
Figurines
Fossils
Formation
Mineral Content
Compound Content
Metamorphism
Types of Metamorphism
Weathering
Types of Weathering
Erosion
Types of Erosion
Hardness
Grain Size
Fracture
Streak
Porosity
Luster
Compressive Strength
Cleavage
Toughness
Specific Gravity
Transparency
Density
Specific Heat Capacity
Resistance
Asia
Africa
Europe
Others
North America
South America
Australia
Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture
From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use
Fine Grained Rock, Opaque Rock
Black, Brown, Green, Grey, Red, White
Decorative Aggregates, Homes
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings
Arrowheads, Construction Aggregate, Cutting Tool, Spear Points
Creating Artwork, Gemstone, In fire-starting tools, Jewelry, To ignite fire, Used in flintlock firearms
Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter
Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate
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.
Uneven, Splintery or Conchoidal
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
China, India, Iran, Japan, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam
Kenya, Morocco, South Africa, Tanzania
Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom
Greenland, Mid-Atlantic Ridge
New South Wales, Queensland, South Australia, Western Australia
Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals
From Greek pegma, pegmat which means- thing joined together + -ite
Coarse Grained Rock, Opaque Rock
Black, Brown, Cream, Green, Grey, Pink, Red, Rust, Silver, White, Yellow
Layered, Banded, Veined and Shiny
Decorative Aggregates, Flooring, Interior Decoration
As Building Stone, As Facing Stone, Paving Stone
As Dimension Stone, Building houses or walls, Construction Aggregate, for Road Aggregate, Landscaping
Artifacts, Sculpture, Small Figurines
Creating Artwork, Jewelry, Source of corundum, tourmalines, beryls and topaz
Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite
Generally rough to touch, Is one of the oldest rock, Source of corundum, tourmalines, beryls and topaz
Pegmatite rock is holocrystalline, intrusive igneous rock which is formed by partial melting and dewatering during the process of metamorphism.
Apatite, Beryl, Feldspar, Fluorite, Garnet, Lepidolite, Quartz, Silica, Spodumene, Topaz
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, Phosphorus Pentoxide
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
Biological Weathering, Chemical Weathering, Mechanical Weathering
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
Grainy, Pearly and Vitreous
Heat Resistant, Impact Resistant, Pressure Resistant
China, India, Iran, Japan, Nepal, North Korea, Russia, Saudi Arabia, South Korea
Austria, France, Greece, Ireland, Italy, Netherlands, Slovakia, Spain, Turkey, Ukraine
New South Wales, Queensland, South Australia, Western Australia