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Comendite and Benmoreite


Benmoreite and Comendite


Definition

Definition
Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite   
An iron rich extrusive rock found as a member of the alkali basalt magma series   

History
  
  

Origin
Italy   
Isle of Mull, Scotland   

Discoverer
Unknown   
Ben More   

Etymology
Comendite derives its name from the area of Le Commende on San Pietro Island in Italy   
From the name of discoverer, Ben More   

Class
Igneous Rocks   
Igneous Rocks   

Sub-Class
Durable Rock, Hard Rock   
Durable Rock, Medium Hardness Rock   

Family
  
  

Group
Volcanic   
Volcanic   

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

Texture

Texture
Porphyritic   
Glassy, Massive, Porphyritic, Scoriaceous, Trachytic, Vesicular   

Color
Blue, Bluish - Grey   
Black, Brown, Light to Dark Grey   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
No   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
Yes   

Wind Resistant
Yes   
No   

Acid Resistant
Yes   
No   

Appearance
Foliated   
Rough and Dull   

Uses

Architecture
  
  

Interior Uses
Countertops, Decorative Aggregates, Interior Decoration   
Floor Tiles, Homes, Hotels, Kitchens   

Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration   
As Building Stone, Paving Stone, Garden Decoration, Office Buildings   

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Raw material for the manufacture of mortar   
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts   
Artifacts, Monuments, Sculpture   

Other Uses
  
  

Commercial Uses
Cemetery Markers   
Commemorative Tablets, Creating Artwork, Curling   

Types

Types
Rhyolite   
Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB) and Tholeiitic Basalt   

Features
Very fine grained rock, It is One of the Oldest, Strongest and Hardest Rock   
Has High structural resistance against erosion and climate, Very fine grained rock   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Used   

Famous Monuments
Not Applicable   
Data Not Available   

Sculpture
Not Yet Used   
Used   

Famous Sculptures
Not Applicable   
Data Not Available   

Pictographs
Not Used   
Used   

Petroglyphs
Not Used   
Used   

Figurines
Not Yet Used   
Used   

Fossils
Absent   
Absent   

Formation

Formation
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.   
Benmoreite is a type of Igneous rock which is formed through the cooling and solidification of lava or magma. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.   

Composition
  
  

Mineral Content
Albite, Amphibole, Quartz   
Alkali feldspar, Biotite, Olivine, Plagioclase, Pyroxene, Sodic plagioclase   

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

Transformation
  
  

Metamorphism
Yes   
Yes   

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

Weathering
Yes   
Yes   

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

Erosion
Yes   
Yes   

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

Properties

Physical Properties
  
  

Hardness
6-7   
6   

Grain Size
Medium Grained   
Fine Grained   

Fracture
Pervasive   
Conchoidal   

Streak
Bluish Black   
Black   

Porosity
Highly Porous   
Less Porous   

Luster
Dull   
Earthy   

Compressive Strength
92.40 N/mm2   
21
37.40 N/mm2   
28

Cleavage
Not Available   
Perfect   

Toughness
2   
2.3   

Specific Gravity
2.38   
2.8-3   

Transparency
Opaque   
Opaque   

Density
Not Available   
2.9-3.1 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
Not Available   
0.84 kJ/Kg K   
15

Resistance
Heat Resistant, Impact Resistant   
Heat Resistant, Pressure Resistant, Wear Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
China   
India, Russia   

Africa
East Africa   
South Africa   

Europe
Italy   
Iceland   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Not Yet Found   
Canada, USA   

South America
Not Yet Found   
Brazil   

Deposits in Oceania Continent
  
  

Australia
Queensland   
Not Yet Found   

Summary >>
<< Reserves

All about Comendite and Benmoreite Properties

Know all about Comendite and Benmoreite properties here. All properties of rocks are important as they define the type of rock and its application. Comendite and Benmoreite belong to Igneous Rocks.Texture of Comendite is Porphyritic whereas that of Benmoreite is Glassy, Massive, Porphyritic, Scoriaceous, Trachytic, Vesicular. Comendite appears Foliated and Benmoreite appears Rough and Dull. The luster of Comendite is dull while that of Benmoreite is earthy. Comendite is available in blue, bluish - grey colors whereas Benmoreite is available in black, brown, light to dark grey colors. The commercial uses of Comendite are cemetery markers and that of Benmoreite are commemorative tablets, creating artwork, curling.

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