Picrite

Turbidite

Picrite and Turbidite

Picrite

Turbidite

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Definition

Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine

A sedimentary rock, deposit of a submarine turbidity currents and are composed of layered particles

History

Origin

Hawaii Islands

European Foreland Basins

Discoverer

Unknown

Arnold H. Bouma

Etymology

From Greek pikros bitter + -ite, 19th century

From Medieval Latin turbiditas, from Latin turbidus (turbid). Turbidity current is from 1939

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Soft Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Opaque Rock

Texture

Earthy, Rough

Mud-rich, Sandy

Color

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

Black, Brown, Green, Grey, Pink

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Shiny

Dull and Banded

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Homes, Interior Decoration

Bathrooms, Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration, Paving Stone

As Building Stone, As Facing Stone, Paving Stone, Garden Decoration

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, Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement

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)

Cemetery Markers, Creating Artwork

Types

Oceanite

Sedimentary rock

Features

Host Rock for Lead

High silica content, Host Rock for Lead

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

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.

Turbidite is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. These particles then settle down and are subjected to high temperature and pressures hence forming Turbidite.

Composition

Mineral Content

Biotite, Olivine, Plagioclase, Pyrrhotite

Coesite, Quartz, Sand

Compound Content

Al, CaO, Carbon Dioxide, Mg, MgO

CaO, Carbon Dioxide, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

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

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

Properties

Physical Properties

Hardness

6.83

1 7

👆🏻

Grain Size

Fine Grained

Fine to Coarse Grained

Fracture

Uneven

Splintery

Streak

White, Greenish White or Grey

Porosity

Less Porous

Very Less Porous

Luster

Subvitreous to Dull

Metallic

Compressive Strength

189.00 N/mm²200.00 N/mm²

0.15 450

👆🏻

Cleavage

Disjunctive

Toughness

2.1

2.4

Specific Gravity

2.75-2.922.46-2.73

0 8.4

👆🏻

Transparency

Opaque

Density

1.5-2.5 g/cm³1.6-2.5 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.88 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Russia

Africa

South Africa

Western Africa

Europe

Iceland

Austria, Belarus, Romania, Switzerland, United Kingdom

Others

Deposits in Western Continents

North America

Canada, USA

South America

Brazil

Brazil, Colombia

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

All about Picrite and Turbidite Properties

Know all about Picrite and Turbidite properties here. All properties of rocks are important as they define the type of rock and its application. Picrite belongs to Igneous Rocks while Turbidite belongs to Sedimentary Rocks.Texture of Picrite is Earthy, Rough whereas that of Turbidite is Mud-rich, Sandy. Picrite appears Rough and Shiny and Turbidite appears Dull and Banded. The luster of Picrite is subvitreous to dull while that of Turbidite is metallic. Picrite and Turbidite 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 Turbidite are cemetery markers, creating artwork.