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Pantellerite and Comendite


Comendite and Pantellerite


Definition

Definition
Pantellerite is a peralkaline rhyolite. It has a higher iron and lower aluminium composition than comendite   
Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite   

History
  
  

Origin
Strait of sicily   
Italy   

Discoverer
Unknown   
Unknown   

Etymology
From Pantelleria, a volcanic island in the Strait of Sicily   
Comendite derives its name from the area of Le Commende on San Pietro Island in Italy   

Class
Igneous Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Hard Rock   

Family
  
  

Group
Volcanic   
Volcanic   

Other Categories
Fine Grained Rock, Opaque Rock   
Medium Grained Rock, Opaque Rock   

Texture

Texture
Eutaxitic   
Porphyritic   

Color
Dark Greenish - Grey   
Blue, Bluish - Grey   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
Yes   

Wind Resistant
Yes   
Yes   

Acid Resistant
Yes   
Yes   

Appearance
Layered and Foliated   
Foliated   

Uses

Architecture
  
  

Interior Uses
Not Yet Used   
Countertops, Decorative Aggregates, Interior Decoration   

Exterior Uses
Not Yet Used   
As Building Stone, As Facing Stone, Garden Decoration   

Other Architectural Uses
Not Yet Used   
Curbing   

Industry
  
  

Construction Industry
NA   
Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Raw material for the manufacture of mortar   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Sculpture   
Artifacts   

Other Uses
  
  

Commercial Uses
Creating Artwork   
Cemetery Markers   

Types

Types
Pantelleritic Ignimbrite   
Rhyolite   

Features
High Fe content   
Very fine grained rock, It is One of the Oldest, Strongest and Hardest Rock   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Not Yet Used   

Famous Monuments
Not Applicable   
Not Applicable   

Sculpture
Not Yet Used   
Not Yet Used   

Famous Sculptures
Not Applicable   
Not Applicable   

Pictographs
Not Used   
Not Used   

Petroglyphs
Not Used   
Not Used   

Figurines
Not Yet Used   
Not Yet Used   

Fossils
Absent   
Absent   

Formation

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.   
Comendite is a type of Igneous rock which is formed due to cooling and solidification of lava or magma. It may form with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.   

Composition
  
  

Mineral Content
Amphibole, Feldspar, Ilmenite   
Albite, Amphibole, Quartz   

Compound Content
Al, Fe   
Al, Fe, Potassium Oxide   

Transformation
  
  

Metamorphism
Yes   
Yes   

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism   
Cataclastic Metamorphism, Regional Metamorphism   

Weathering
Yes   
Yes   

Types of Weathering
Biological Weathering, Chemical Weathering   
Biological Weathering, Chemical Weathering, Mechanical Weathering   

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
6-7   
6-7   

Grain Size
Fine Grained   
Medium Grained   

Fracture
Sub-conchoidal   
Pervasive   

Streak
Unknown   
Bluish Black   

Porosity
Less Porous   
Highly Porous   

Luster
Earthy   
Dull   

Compressive Strength
Not Available   
92.40 N/mm2   
21

Cleavage
Conchoidal   
Not Available   

Toughness
2   
2   

Specific Gravity
Not Available   
2.38   

Transparency
Translucent to Opaque   
Opaque   

Density
Not Available   
Not Available   

Thermal Properties
  
  

Resistance
Heat Resistant   
Heat Resistant, Impact Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India   
China   

Africa
Angola, Egypt, Madagascar, Namibia, Nigeria   
East Africa   

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

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, USA   
Not Yet Found   

South America
Argentina, Bolivia, Brazil, Colombia, Ecuador   
Not Yet Found   

Deposits in Oceania Continent
  
  

Australia
Central Australia, Queensland, Western Australia   
Queensland   

Summary >>
<< Reserves

All about Pantellerite and Comendite Properties

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

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