Definition
Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine
History
Origin
Hawaii Islands
Discoverer
Unknown
Etymology
From Greek pikros bitter + -ite, 19th century
Class
Igneous Rocks
Sub-Class
Durable Rock, Hard Rock
Family
Group
Volcanic
Other Categories
Fine Grained Rock, Opaque Rock
Texture
Earthy, Rough
Color
Black, Brown, Green, Grey, Pink, White, Yellow
Maintenance
Less
Durability
Durable
Water Resistant
✔
✘
81% - Igneous Rocks Rocks have it !
Scratch Resistant
✔
✘
86% - Igneous Rocks Rocks have it !
Stain Resistant
✔
✘
66% - Igneous Rocks Rocks have it !
Wind Resistant
✔
✘
49% - Igneous Rocks Rocks have it !
Acid Resistant
✔
✘
48% - Igneous Rocks Rocks have it !
Appearance
Rough and Shiny
Architecture
Interior Uses
Countertops, Decorative Aggregates, Homes, Interior Decoration
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
Other Architectural Uses
Curbing
Industry
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.
Medical Industry
-
Antiquity Uses
Artifacts, Monuments, Sculpture
Other Uses
Commercial Uses
As a Feed Additive for Livestock, As armour rock for sea walls, Metallurgical Flux, Pottery, Source of Magnesia (MgO)
Types
Oceanite
Features
Host Rock for Lead
Archaeological Significance
Monuments
-
Famous Monuments
-
Sculpture
-
Famous Sculptures
-
Pictographs
-
Petroglyphs
-
Figurines
-
Fossils
Absent
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.
Composition
Mineral Content
Biotite, Olivine, Plagioclase, Pyrrhotite
Compound Content
Al, CaO, Carbon Dioxide, Mg, MgO
Transformation
Metamorphism
✔
✘
97% - Igneous Rocks Rocks have it !
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Impact Metamorphism, Regional Metamorphism
Weathering
✔
✘
99% - Igneous Rocks Rocks have it !
Types of Weathering
Biological Weathering
Erosion
✔
✘
92% - Igneous Rocks Rocks have it !
Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
Physical Properties
Hardness
6.8
1
7
👆🏻
Grain Size
Fine Grained
Fracture
Uneven
Streak
White, Greenish White or Grey
Porosity
Less Porous
Luster
Subvitreous to Dull
Compressive Strength
189.00 N/mm2
Rank: 16 (Overall)
0.15
450
👆🏻
Cleavage
-
Toughness
2.1
Specific Gravity
2.75-2.92
0
8.4
👆🏻
Transparency
Opaque
Density
1.5-2.5 g/cm3
0
1400
👆🏻
Thermal Properties
Specific Heat Capacity
0.88 kJ/Kg K
Rank: 13 (Overall)
0.14
3.2
👆🏻
Resistance
Heat Resistant
Deposits in Eastern Continents
Asia
India, Russia
Africa
South Africa
Europe
Iceland
Others
-
Deposits in Western Continents
North America
Canada, USA
South America
Brazil
Deposits in Oceania Continent
Australia
-