Definition
Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine
Jadeitite is a metamorphic rock usually found in blueschist grade metamorphic terrains
Origin
Hawaii Islands
Unknown
Discoverer
Unknown
Unknown
Etymology
From Greek pikros bitter + -ite, 19th century
From pyroxene mineral jadeite
Class
Igneous Rocks
Metamorphic Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock
Group
Volcanic
Not Applicable
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Texture
Earthy, Rough
Earthy
Color
Black, Brown, Colourless, Green, Grey, Pink, White, Yellow
Black, Brown, Colourless, Green, Grey, White
Durability
Durable
Durable
Appearance
Rough and Shiny
Rough and Dull
Interior Uses
Countertops, Decorative Aggregates, Homes, Interior Decoration
Decorative Aggregates, Homes, Interior Decoration
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
Garden Decoration, Office Buildings, Paving Stone
Other Architectural Uses
Curbing
Curbing
Construction Industry
As a Sintering Agent in Steel Industry to process Iron Ore, Cement Manufacture, for Road Aggregate, Manufacture of Magnesium and Dolomite Refractories, Roadstone, Used for flooring, stair treads, borders and window sills.
As Dimension Stone, Cutting Tool, Knives
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts, Monuments, Sculpture
Artifacts, Jewellery, Monuments, Sculpture
Commercial Uses
As a Feed Additive for Livestock, As armour rock for sea walls, Metallurgical Flux, Pottery, Source of Magnesia (MgO)
Commemorative Tablets, Creating Artwork, Jewelry
Types
Oceanite
Not Available
Features
Host Rock for Lead
Host Rock for Lead
Archaeological Significance
Famous Monuments
Data Not Available
Data Not Available
Famous Sculptures
Data Not Available
Data Not Available
Pictographs
Not Used
Used
Petroglyphs
Not Used
Used
Formation
Picrite 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.
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.
Mineral Content
Biotite, Olivine, Plagioclase, Pyrrhotite
Carbonate, Magnetite, Pyrrhotite, Serpentine, Sulfides
Compound Content
Al, CaO, Carbon Dioxide, Mg, MgO
Ca, CaO, Carbon Dioxide, KCl, MgO, Sulfur Dioxide, Sulphur
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Impact Metamorphism, Regional Metamorphism
Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism
Types of Weathering
Biological Weathering
Not Applicable
Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
Coastal Erosion, Water Erosion, Wind Erosion
Grain Size
Fine Grained
Very fine-grained
Streak
White, Greenish White or Grey
White, Greenish White or Grey
Porosity
Less Porous
Less Porous
Luster
Subvitreous to Dull
Waxy and Dull
Cleavage
Imperfect
Irregular
Specific Gravity
2.75-2.92
2.79-3
Transparency
Opaque
Opaque
Density
1.5-2.5 g/cm3
2.5-3 g/cm3
Resistance
Heat Resistant
Heat Resistant, Water Resistant
Deposits in Eastern Continents
Asia
India, Russia
India, Saudi Arabia, Singapore, South Korea
Africa
South Africa
Ethiopia, Western Africa
Europe
Iceland
England, Georgia, Switzerland, United Kingdom
Others
Not Yet Found
Not Yet Found
Deposits in Western Continents
North America
Canada, USA
Canada
South America
Brazil
Colombia
Deposits in Oceania Continent
Australia
Not Yet Found
Central Australia, New South Wales, New Zealand, Western Australia
All about Picrite and Jadeitite Properties
Know all about Picrite and Jadeitite properties here. All properties of rocks are important as they define the type of rock and its application. Picrite belongs to Igneous Rocks while Jadeitite belongs to Metamorphic Rocks.Texture of Picrite is Earthy, Rough whereas that of Jadeitite is Earthy. Picrite appears Rough and Shiny and Jadeitite appears Rough and Dull. The luster of Picrite is subvitreous to dull while that of Jadeitite is waxy and dull. Picrite and Jadeitite are available in black, brown, colourless, green, grey, pink, white, yellow colors. The commercial uses of Picrite are as a feed additive for livestock, as armour rock for sea walls, metallurgical flux, pottery, source of magnesia (mgo) and that of Jadeitite are commemorative tablets, creating artwork, jewelry.