Rhyolite

Pantellerite

Rhyolite and Pantellerite

Rhyolite

Pantellerite

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1 Definition

1.1 Definition

Rhyolite is a fine-grained igneous rock which is rich in silica

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

1.2 History

1.2.1 Origin

North America

Strait of sicily

1.2.2 Discoverer

Ferdinand von Richthofen

Unknown

1.3 Etymology

From German Rhyolit, from Greek rhuax lava stream + lithos stone

From Pantelleria, a volcanic island in the Strait of Sicily

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

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Aphanitic, Glassy, Porphyritic

Eutaxitic

2.2 Color

Grey, White, Light Black

Dark Greenish - 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

Banded

Layered and Foliated

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Homes, Hotels, Interior Decoration, Kitchens

Not Yet Used

3.1.2 Exterior Uses

As Building Stone, As Facing Stone, Paving Stone, Office Buildings

Not Yet Used

3.1.3 Other Architectural Uses

Not Yet Used

3.2 Industry

3.2.1 Construction Industry

Arrowheads, As Dimension Stone, Building houses or walls, Construction Aggregate, Cutting Tool, for Road Aggregate, Knives

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts

Artifacts, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

Gemstone, Laboratory bench tops, Jewelry

Creating Artwork

4 Types

4.1 Types

Pumice Rocks, Obsidian Rocks, Perlite Rocks, Porphyritic Rocks.

Pantelleritic Ignimbrite

4.2 Features

Acidic in nature, Available in lots of colors

High Fe content

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

4.3.2 Famous Monuments

Not Applicable

4.3.3 Sculpture

Not Yet Used

4.3.4 Famous Sculptures

Not Applicable

4.3.5 Pictographs

Not Used

4.3.6 Petroglyphs

Not Used

4.3.7 Figurines

Not Yet Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

Rhyolite is a felsic extrusive rock and due to its high silica content, rhyolite lava is very viscous and is volcanic equivalent of granite.

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.

5.2 Composition

5.2.1 Mineral Content

Biotite, Feldspar, Hornblade, Plagioclase, Pyroxene, Quartz

Amphibole, Feldspar, Ilmenite

5.2.2 Compound Content

Ca, Fe, Potassium Oxide, Mg, Potassium, Silicon Dioxide, Sodium

Al, Fe

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Chemical Erosion, Sea Erosion, Water Erosion, Wind Erosion

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

6 Properties

6.1 Physical Properties

6.1.1 Hardness

6-76-7

1 7

6.1.2 Grain Size

Large and Coarse Grained

Fine Grained

6.1.3 Fracture

Sub-conchoidal

6.1.4 Streak

Colorless

Unknown

6.1.5 Porosity

Highly Porous

Less Porous

6.1.6 Luster

Earthy

6.1.7 Compressive Strength

140.00 N/mm²NA

0.15 450

6.1.8 Cleavage

Not Available

Conchoidal

6.1.9 Toughness

6.1.10 Specific Gravity

2.65-2.67Not Available

0 8.4

6.1.11 Transparency

Opaque

Translucent to Opaque

6.1.12 Density

2.4-2.6 g/cm³Not Available

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NANA

0.14 3.2

6.2.2 Resistance

Heat Resistant, Wear Resistant

Heat Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

China, India

7.1.2 Africa

Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

Angola, Egypt, Madagascar, Namibia, Nigeria

7.1.3 Europe

Germany, Iceland, Ireland, Italy, Spain

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

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, Chile, Colombia, Ecuador, Peru, Venezuela

Argentina, Bolivia, Brazil, Colombia, Ecuador

7.3 Deposits in Oceania Continent

7.3.1 Australia

New Zealand, Queensland, Western Australia

Central Australia, Queensland, Western Australia

All about Rhyolite and Pantellerite Properties

Know all about Rhyolite and Pantellerite properties here. All properties of rocks are important as they define the type of rock and its application. Rhyolite and Pantellerite belong to Igneous Rocks.Texture of Rhyolite is Aphanitic, Glassy, Porphyritic whereas that of Pantellerite is Eutaxitic. Rhyolite appears Banded and Pantellerite appears Layered and Foliated. The luster of Rhyolite and Pantellerite is earthy. Rhyolite is available in grey, white, light black colors whereas Pantellerite is available in dark greenish - grey colors. The commercial uses of Rhyolite are gemstone, laboratory bench tops, jewelry and that of Pantellerite are creating artwork.