Greywacke and Jadeitite
Definition
Definition
Greywacke is defined as a dark coarse-grained sandstone rock which contains more than 15 per cent clay
Jadeitite is a metamorphic rock usually found in blueschist grade metamorphic terrains
History
Discoverer
Unknown
Unknown
Etymology
From German Grauwacke, from grau grey + wacke
From pyroxene mineral jadeite
Class
Sedimentary Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Family
Group
Not Applicable
Not Applicable
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Texture
Texture
Clastic
Earthy
Color
Beige, Black, Brown, Colourless, Cream, Dark Brown, Green, Grey, Light Green, Light to Dark Grey, Pink, Red, White, Yellow
Black, Brown, Colourless, Green, Grey, White
Maintenance
Less
Less
Durability
Durable
Durable
Water Resistant
Yes
Yes
Scratch Resistant
Yes
No
Stain Resistant
Yes
No
Wind Resistant
Yes
No
Acid Resistant
No
No
Appearance
Dull
Rough and Dull
Uses
Architecture
Interior Uses
Decorative Aggregates, Floor Tiles, Flooring, Homes, Interior Decoration
Decorative Aggregates, Homes, Interior Decoration
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
Garden Decoration, Office Buildings, Paving Stone
Other Architectural Uses
Curbing, Whetstones
Curbing
Industry
Construction Industry
Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar
As Dimension Stone, Cutting Tool, Knives
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts, Sculpture, Small Figurines
Artifacts, Jewellery, Monuments, Sculpture
Other Uses
Commercial Uses
As armour rock for sea walls, Petroleum reservoirs, Sea Defence, Tombstones
Commemorative Tablets, Creating Artwork, Jewelry
Types
Types
Not Available
Not Available
Features
Available in Lots of Colors and Patterns, Generally rough to touch, Non-vesicular, Veined
Host Rock for Lead
Archaeological Significance
Monuments
Not Yet Used
Used
Famous Monuments
Not Applicable
Data Not Available
Sculpture
Used
Used
Famous Sculptures
Data Not Available
Data Not Available
Pictographs
Not Used
Used
Petroglyphs
Not Used
Used
Figurines
Used
Used
Fossils
Present
Absent
Formation
Formation
Graywacke rock is a type of sedimentary rock, which is also known as immature sandstone, which is indurated, dark grey and consisting of poorly sorted angular to sub-angular, sand-sized grains.
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Jadeitite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.
Composition
Mineral Content
Augite, Biotite, Calcite, Chlorite, Clay, Clay Minerals, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz
Carbonate, Magnetite, Pyrrhotite, Serpentine, Sulfides
Compound Content
Aluminium Oxide, NaCl, CaO, Chromium(III) Oxide, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
Ca, CaO, Carbon Dioxide, KCl, MgO, Sulfur Dioxide, Sulphur
Transformation
Metamorphism
No
Yes
Types of Metamorphism
Not Applicable
Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism
Weathering
Yes
No
Types of Weathering
Biological Weathering, Chemical Weathering
Not Applicable
Erosion
Yes
Yes
Types of Erosion
Coastal Erosion, Sea Erosion, Wind Erosion
Coastal Erosion, Water Erosion, Wind Erosion
Properties
Physical Properties
Hardness
6-7
3-5
Grain Size
Angular and Fine
Very fine-grained
Fracture
Conchoidal
Uneven
Streak
White
White, Greenish White or Grey
Porosity
Highly Porous
Less Porous
Luster
Dull
Waxy and Dull
Compressive Strength
Not Available
310.00 N/mm2
2
Cleavage
Perfect
Irregular
Toughness
2.6
7
Specific Gravity
2.2-2.8
2.79-3
Transparency
Opaque
Opaque
Density
2.6-2.61 g/cm3
2.5-3 g/cm3
Thermal Properties
Specific Heat Capacity
Not Available
0.95 kJ/Kg K
9
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant
Heat Resistant, Water Resistant
Reserves
Deposits in Eastern Continents
Asia
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan
India, Saudi Arabia, Singapore, South Korea
Africa
Namibia, Nigeria, South Africa
Ethiopia, Western Africa
Europe
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom
England, Georgia, Switzerland, United Kingdom
Others
Greenland
Not Yet Found
Deposits in Western Continents
North America
Canada, USA
Canada
South America
Brazil
Colombia
Deposits in Oceania Continent
Australia
New South Wales, New Zealand
Central Australia, New South Wales, New Zealand, Western Australia
All about Greywacke and Jadeitite Properties
Know all about Greywacke and Jadeitite properties here. All properties of rocks are important as they define the type of rock and its application. Greywacke belongs to Sedimentary Rocks while Jadeitite belongs to Metamorphic Rocks.Texture of Greywacke is Clastic whereas that of Jadeitite is Earthy. Greywacke appears Dull and Jadeitite appears Rough and Dull. The luster of Greywacke is dull while that of Jadeitite is waxy and dull. Greywacke and Jadeitite are available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. The commercial uses of Greywacke are as armour rock for sea walls, petroleum reservoirs, sea defence, tombstones and that of Jadeitite are commemorative tablets, creating artwork, jewelry.
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