Pantellerite

Variolite

Pantellerite and Variolite

Pantellerite

Variolite

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1 Definition

1.1 Definition

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

Variolites are a group of dark green basic igneous rocks which exhibit pale colored spots, or spherules, especially on weathered surfaces, that give them a pockmarked appearance

1.2 History

1.2.1 Origin

Strait of sicily

France

1.2.2 Discoverer

Unknown

1.3 Etymology

From Pantelleria, a volcanic island in the Strait of Sicily

From Latin varius, speckled, variegated

1.4 Class

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

1.5 Family

1.5.1 Group

Volcanic

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Opaque Rock

2 Texture

2.1 Texture

Eutaxitic

Glassy, Massive, Porphyritic, Scoriaceous, Vesicular

2.2 Color

Dark Greenish - Grey

Black, Brown, Light to Dark Grey

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Layered and Foliated

Dull and Soft

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Not Yet Used

Floor Tiles, Flooring, Homes, Hotels, Kitchens

3.1.2 Exterior Uses

Not Yet Used

Garden Decoration, Office Buildings

3.1.3 Other Architectural Uses

Not Yet Used

Curbing

3.2 Industry

3.2.1 Construction Industry

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Sculpture

Artifacts, Monuments, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

Creating Artwork

Cemetery Markers, Creating Artwork

4 Types

4.1 Types

Pantelleritic Ignimbrite

Not Available

4.2 Features

High Fe content

Has High structural resistance against erosion and climate, Very fine grained rock

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Not Applicable

Data Not Available

4.3.3 Sculpture

Not Yet Used

Used

4.3.4 Famous Sculptures

Not Applicable

Data Not Available

4.3.5 Pictographs

Not Used

Used

4.3.6 Petroglyphs

Not Used

Used

4.3.7 Figurines

Not Yet Used

Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

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.

Variolites are a group of dark green basic igneous rocks that exhibit pale colored spots on weathered surfaces that give them a pockmarked appearance.

5.2 Composition

5.2.1 Mineral Content

Amphibole, Feldspar, Ilmenite

Olivine, Plagioclase, Pyroxene

5.2.2 Compound Content

Al, Fe

Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

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

Not Applicable

6 Properties

6.1 Physical Properties

6.1.1 Hardness

6-76

1 7

6.1.2 Grain Size

Fine Grained

Not Applicable

6.1.3 Fracture

Sub-conchoidal

Conchoidal

6.1.4 Streak

Unknown

White to Grey

6.1.5 Porosity

Less Porous

6.1.6 Luster

Earthy

Not Available

6.1.7 Compressive Strength

NA37.50 N/mm²

0.15 450

6.1.8 Cleavage

Conchoidal

Not Available

6.1.9 Toughness

2.3

6.1.10 Specific Gravity

Not Available2.8-3

0 8.4

6.1.11 Transparency

Translucent to Opaque

Opaque

6.1.12 Density

Not Available2.9-3.1 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NA0.84 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Heat Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

China, India

India, Russia

7.1.2 Africa

Angola, Egypt, Madagascar, Namibia, Nigeria

South Africa

7.1.3 Europe

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

Iceland

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada, USA

7.2.2 South America

Argentina, Bolivia, Brazil, Colombia, Ecuador

Brazil

7.3 Deposits in Oceania Continent

7.3.1 Australia

Central Australia, Queensland, Western Australia

Not Yet Found

All about Pantellerite and Variolite Properties

Know all about Pantellerite and Variolite properties here. All properties of rocks are important as they define the type of rock and its application. Pantellerite and Variolite belong to Igneous Rocks.Texture of Pantellerite is Eutaxitic whereas that of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Pantellerite appears Layered and Foliated and Variolite appears Dull and Soft. The luster of Pantellerite is earthy while that of Variolite is not available. Pantellerite is available in dark greenish - grey colors whereas Variolite is available in black, brown, light to dark grey colors. The commercial uses of Pantellerite are creating artwork and that of Variolite are cemetery markers, creating artwork.