Websterite

Pantellerite

Websterite and Pantellerite

Websterite

Pantellerite

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1 Definition

1.1 Definition

Websterite is ultramafic and ultrabasic rock that consists of roughly equal proportions of orthopyroxene and clinopyroxene. It is a special type of pyroxenite.

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

1.3 History

1.3.2 Origin

Webster, North Carolina

Strait of sicily

1.3.4 Discoverer

Unknown

1.5 Etymology

From the town of Webster located in North Carolina

From Pantelleria, a volcanic island in the Strait of Sicily

1.7 Class

Igneous Rocks

1.7.1 Sub-Class

Durable Rock, Hard Rock

1.8 Family

1.8.1 Group

Plutonic

Volcanic

1.9 Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Clastic, Granular, Phaneritic, Porphyritic

Eutaxitic

2.2 Color

Black to Grey, Bluish - Grey, Dark Greenish - Grey, Green, Light Greenish Grey

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

Layered, Banded, Veined and Shiny

Layered and Foliated

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Interior Decoration

Not Yet Used

3.1.2 Exterior Uses

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

Not Yet Used

3.1.3 Other Architectural Uses

Curbing

Not Yet Used

3.2 Industry

3.2.1 Construction Industry

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts

Artifacts, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork, Laboratory bench tops, Jewelry, Sea Defence, Tombstones

Creating Artwork

4 Types

4.1 Types

Not Available

Pantelleritic Ignimbrite

4.2 Features

Generally rough to touch, Is one of the oldest rock

High Fe content

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

4.3.2 Famous Monuments

Data Not Available

Not Applicable

4.3.3 Sculpture

Not Yet Used

4.3.4 Famous Sculptures

Data Not Available

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

Websterite can be formed as cumulates in ultramafic intrusions by accumulation of pyroxene crystals at the base of the lava chamber.

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

Amphibole, Augite, Bronzite, Chromite, Diopside, Enstatite, Garnet, Hornblende, Hypersthene, Magnetite, Pyroxene

Amphibole, Feldspar, Ilmenite

5.2.2 Compound Content

Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide

Al, Fe

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Burial Metamorphism, Impact 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, Coastal Erosion, Glacier 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

76-7

1 7

7.3.2 Grain Size

Coarse Grained

Fine Grained

7.3.3 Fracture

Uneven

Sub-conchoidal

7.3.4 Streak

White, Greenish White or Grey

Unknown

7.3.5 Porosity

Less Porous

7.3.6 Luster

Dull to Vitreous to Submetallic

Earthy

7.3.7 Compressive Strength

NANA

0.15 450

7.3.8 Cleavage

Irregular

Conchoidal

7.3.9 Toughness

Not Available

7.3.10 Specific Gravity

3.2-3.5Not Available

0 8.4

7.3.11 Transparency

Opaque

Translucent to Opaque

7.3.12 Density

3.1-3.6 g/cm³Not Available

0 1400

7.4 Thermal Properties

7.4.1 Specific Heat Capacity

NANA

0.14 3.2

7.4.2 Resistance

Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant

8 Reserves

8.1 Deposits in Eastern Continents

8.1.1 Asia

India, Russia

China, India

8.1.2 Africa

South Africa

Angola, Egypt, Madagascar, Namibia, Nigeria

8.1.3 Europe

Germany, Greece, Italy, Scotland, Turkey

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

8.1.4 Others

Greenland

Not Yet Found

8.2 Deposits in Western Continents

8.2.1 North America

Canada, USA

8.2.2 South America

Brazil, Colombia, Venezuela

Argentina, Bolivia, Brazil, Colombia, Ecuador

8.3 Deposits in Oceania Continent

8.3.1 Australia

New Zealand, Queensland

Central Australia, Queensland, Western Australia

All about Websterite and Pantellerite Properties

Know all about Websterite and Pantellerite properties here. All properties of rocks are important as they define the type of rock and its application. Websterite and Pantellerite belong to Igneous Rocks.Texture of Websterite is Clastic, Granular, Phaneritic, Porphyritic whereas that of Pantellerite is Eutaxitic. Websterite appears Layered, Banded, Veined and Shiny and Pantellerite appears Layered and Foliated. The luster of Websterite is dull to vitreous to submetallic while that of Pantellerite is earthy. Websterite and Pantellerite are available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey colors. The commercial uses of Websterite and Pantellerite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.