Picrite

Diamictite

Picrite and Diamictite

Picrite

Diamictite

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Definition

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

Diamictite is a sedimentary rock that consists of non-sorted to poorly sorted terrigenous sediment containing particles that range in size from clay to boulders, suspended in a matrix of mudstone or sandstone

History

Origin

Hawaii Islands

Southern Mongolia

Discoverer

Unknown

Etymology

From Greek pikros bitter + -ite, 19th century

From Greek dia through and meiktós or mixed

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, Opaque Rock

Texture

Earthy, Rough

Clastic

Color

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

Brown, Buff

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Shiny

Banded

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Homes, Interior Decoration

Decorative Aggregates, Interior Decoration

Exterior Uses

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

As Building Stone, 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, Construction Aggregate, for Road Aggregate, Landscaping, Roadstone

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts

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, Production of Lime

Types

Oceanite

Bedded Diamictite and Laminated Diamictite

Features

Host Rock for Lead

Host Rock for Lead, Is one of the oldest rock

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.

Diamictite is unevenly sorted terrigenous, non-calcareous sedimentary rock which forms due to weathering of mudstone and sandstone.

Composition

Mineral Content

Biotite, Olivine, Plagioclase, Pyrrhotite

Calcite, Clay, Feldspar, Micas, Quartz

Compound Content

Al, CaO, Carbon Dioxide, Mg, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Biological Weathering, Chemical Weathering

Erosion

✔ ✘

Types of Erosion

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

Chemical Erosion, Coastal Erosion, Water Erosion

Properties

Physical Properties

Hardness

6.82-3

1 7

👆🏻

Grain Size

Fine Grained

Coarse Grained

Fracture

Uneven

Conchoidal to Uneven

Streak

White, Greenish White or Grey

Light to dark brown

Porosity

Less Porous

Highly Porous

Luster

Subvitreous to Dull

Grainy, Pearly and Vitreous

Compressive Strength

189.00 N/mm²-

0.15 450

👆🏻

Cleavage

Toughness

2.1

Specific Gravity

2.75-2.924.3-5.0

0 8.4

👆🏻

Transparency

Opaque

Density

1.5-2.5 g/cm³2.2-2.35 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.88 kJ/Kg K0.75 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant

Heat Resistant, Impact Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Russia

China, India, Kazakhstan, Mongolia, Russia

Africa

South Africa

Namibia, Nigeria, South Africa

Europe

Iceland

Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom

Others

Deposits in Western Continents

North America

Canada, USA

South America

Brazil

Brazil, Venezuela

Deposits in Oceania Continent

Australia

New South Wales, New Zealand

All about Picrite and Diamictite Properties

Know all about Picrite and Diamictite properties here. All properties of rocks are important as they define the type of rock and its application. Picrite belongs to Igneous Rocks while Diamictite belongs to Sedimentary Rocks.Texture of Picrite is Earthy, Rough whereas that of Diamictite is Clastic. Picrite appears Rough and Shiny and Diamictite appears Banded. The luster of Picrite is subvitreous to dull while that of Diamictite is grainy, pearly and vitreous. Picrite is available in black, brown, green, grey, pink, white, yellow colors whereas Diamictite is available in brown, buff 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 Diamictite are commemorative tablets, creating artwork, production of lime.