Picrite

Jadeitite

Picrite and Jadeitite

Picrite

Jadeitite

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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

History

Origin

Hawaii Islands

Discoverer

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

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Earthy, Rough

Earthy

Color

Black, Brown, Green, Grey, Pink, White, Yellow

Black, Brown, Green, Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Shiny

Rough and Dull

Uses

Architecture

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

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.

As Dimension Stone, Cutting Tool, Knives

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts, Jewellery, 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)

Commemorative Tablets, Creating Artwork, Jewelry

Types

Oceanite

Metamorphic rock

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.

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

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

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Impact Metamorphism, Regional Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion

Coastal Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

6.83-5

1 7

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Grain Size

Fine Grained

Very fine-grained

Fracture

Uneven

Streak

White, Greenish White or Grey

Porosity

Less Porous

Luster

Subvitreous to Dull

Waxy and Dull

Compressive Strength

189.00 N/mm²310.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

2.1

Specific Gravity

2.75-2.922.79-3

0 8.4

👆🏻

Transparency

Opaque

Density

1.5-2.5 g/cm³2.5-3 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.88 kJ/Kg K0.95 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant

Heat Resistant, Water Resistant

Reserves

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

Deposits in Western Continents

North America

Canada, USA

Canada

South America

Brazil

Colombia

Deposits in Oceania Continent

Australia

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, 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.