Pantellerite

Dacite

Pantellerite and Dacite

Pantellerite

Dacite

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Definition

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

Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite

History

Origin

Strait of sicily

Romania and Moldova, Europe

Discoverer

Unknown

Etymology

From Pantelleria, a volcanic island in the Strait of Sicily

From Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Soft Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Eutaxitic

Aphanitic to Porphyritic

Color

Dark Greenish - Grey

Bluish - Grey, Brown, Grey, Light to Dark Grey

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Layered and Foliated

Vesicular

Uses

Architecture

Interior Uses

Decorative Aggregates, Entryways, Interior Decoration

Exterior Uses

As Building Stone, Paving Stone, Garden Decoration

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Construction Aggregate, for Road Aggregate, Landscaping

Medical Industry

Antiquity Uses

Artifacts, Sculpture

Artifacts

Other Uses

Commercial Uses

Creating Artwork

Commemorative Tablets, Creating Artwork

Types

Pantelleritic Ignimbrite

Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite

Features

High Fe content

Host Rock for Lead, Is one of the oldest rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

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.

Dacitic magma is formed by the subduction of young oceanic crust under a thick felsic continental plate. Further, the Oceanic crust is hydrothermally altered as quartz and sodium are added.

Composition

Mineral Content

Amphibole, Feldspar, Ilmenite

Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon

Compound Content

Al, Fe

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

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

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

Chemical Erosion

Properties

Physical Properties

Hardness

6-72-2.25

1 7

👆🏻

Grain Size

Fine Grained

Medium to Fine Coarse Grained

Fracture

Sub-conchoidal

Conchoidal

Streak

White

Porosity

Less Porous

Luster

Earthy

Subvitreous to Dull

Compressive Strength

210.00 N/mm²70.00 N/mm²

0.15 450

👆🏻

Cleavage

Conchoidal

Perfect

Toughness

Specific Gravity

-99992.86-2.87

0 8.4

👆🏻

Transparency

Translucent to Opaque

Translucent

Density

-9999 g/cm³2.77-2.771 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India

Africa

Angola, Egypt, Madagascar, Namibia, Nigeria

Europe

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

France, Greece, Romania, Scotland, Spain

Others

Deposits in Western Continents

North America

Canada, USA

USA

South America

Argentina, Bolivia, Brazil, Colombia, Ecuador

Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela

Deposits in Oceania Continent

Australia

Central Australia, Queensland, Western Australia

New Zealand, South Australia, Western Australia

All about Pantellerite and Dacite Properties

Know all about Pantellerite and Dacite properties here. All properties of rocks are important as they define the type of rock and its application. Pantellerite and Dacite belong to Igneous Rocks.Texture of Pantellerite is Eutaxitic whereas that of Dacite is Aphanitic to Porphyritic. Pantellerite appears Layered and Foliated and Dacite appears Vesicular. The luster of Pantellerite is earthy while that of Dacite is subvitreous to dull. Pantellerite is available in dark greenish - grey colors whereas Dacite is available in bluish - grey, brown, grey, light to dark grey colors. The commercial uses of Pantellerite are creating artwork and that of Dacite are commemorative tablets, creating artwork.