Picrite

Pantellerite

Picrite and Pantellerite

Picrite

Pantellerite

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Definition

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

Pantellerite is a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite

History

Origin

Hawaii Islands

Strait of sicily

Discoverer

Unknown

Etymology

From Greek pikros bitter + -ite, 19th century

From Pantelleria, a volcanic island in the Strait of Sicily

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Earthy, Rough

Eutaxitic

Color

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

Dark Greenish - Grey

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Shiny

Layered and Foliated

Uses

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

Artifacts, Sculpture

Other Uses

Commercial Uses

As a Feed Additive for Livestock, As armour rock for sea walls, Metallurgical Flux, Pottery, Source of Magnesia (MgO)

Creating Artwork

Types

Oceanite

Pantelleritic Ignimbrite

Features

Host Rock for Lead

High Fe content

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.

Pantellerite 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

Amphibole, Feldspar, Ilmenite

Compound Content

Al, CaO, Carbon Dioxide, Mg, MgO

Al, Fe

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Impact Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic 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

Properties

Physical Properties

Hardness

6.86-7

1 7

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Grain Size

Fine Grained

Fracture

Uneven

Sub-conchoidal

Streak

White, Greenish White or Grey

Porosity

Less Porous

Luster

Subvitreous to Dull

Earthy

Compressive Strength

189.00 N/mm²210.00 N/mm²

0.15 450

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Cleavage

Conchoidal

Toughness

2.1

Specific Gravity

2.75-2.92-9999

0 8.4

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Transparency

Opaque

Translucent to Opaque

Density

1.5-2.5 g/cm³-9999 g/cm³

0 1400

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Thermal Properties

Specific Heat Capacity

0.88 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Russia

China, India

Africa

South Africa

Angola, Egypt, Madagascar, Namibia, Nigeria

Europe

Iceland

Germany, Iceland, Ireland, Italy, Spain, United Kingdom

Others

Deposits in Western Continents

North America

Canada, USA

South America

Brazil

Argentina, Bolivia, Brazil, Colombia, Ecuador

Deposits in Oceania Continent

Australia

Central Australia, Queensland, Western Australia

All about Picrite and Pantellerite Properties

Know all about Picrite and Pantellerite properties here. All properties of rocks are important as they define the type of rock and its application. Picrite and Pantellerite belong to Igneous Rocks.Texture of Picrite is Earthy, Rough whereas that of Pantellerite is Eutaxitic. Picrite appears Rough and Shiny and Pantellerite appears Layered and Foliated. The luster of Picrite is subvitreous to dull while that of Pantellerite is earthy. Picrite is available in black, brown, green, grey, pink, white, yellow colors whereas Pantellerite is available in dark greenish - grey 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 Pantellerite are creating artwork.