Home
Compare Rocks


Comendite and Oolite


Oolite and Comendite


Definition

Definition
Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite   
Oolite is a sedimentary rock formed from ooids, spherical grains which are composed of concentric layers of calcite   

History
  
  

Origin
Italy   
Unknown   

Discoverer
Unknown   
Unknown   

Etymology
Comendite derives its name from the area of Le Commende on San Pietro Island in Italy   
From oo- + -lite, after German Oolit. A rock consisting of fine grains of carbonate of lime   

Class
Igneous Rocks   
Sedimentary 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   
Clastic or Non-Clastic   

Color
Blue, Bluish - Grey   
Black, Blue, Brown, Cream, Green, Grey, Pink, Red, Silver, White, Yellow   

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   
Rounded and Rough   

Uses

Architecture
  
  

Interior Uses
Countertops, Decorative Aggregates, Interior Decoration   
Decorative Aggregates, Flooring, Interior Decoration   

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

Other Architectural Uses
Curbing   
Not Yet Used   

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   
Cement Manufacture, Cobblestones, Landscaping   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts   
Artifacts   

Other Uses
  
  

Commercial Uses
Cemetery Markers   
Creating Artwork, Jewelry, Used in aquariums   

Types

Types
Rhyolite   
Not Available   

Features
Very fine grained rock, It is One of the Oldest, Strongest and Hardest Rock   
Available in lots of colors, Generally rough to touch, Very fine grained 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   
Used   

Petroglyphs
Not Used   
Used   

Figurines
Not Yet Used   
Not Yet Used   

Fossils
Absent   
Present   

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.   
Oolites form when layers of calcite are deposited around a sand grain or fossil piece and are rolled around in calm water, which makes them round.   

Composition
  
  

Mineral Content
Albite, Amphibole, Quartz   
Calcite, Chert, Clay, Dolomite, Quartz, Sand, Silt   

Compound Content
Al, Fe, Potassium Oxide   
Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, FeO, MgO   

Transformation
  
  

Metamorphism
Yes   
No   

Types of Metamorphism
Cataclastic Metamorphism, Regional Metamorphism   
Not Applicable   

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   

Properties

Physical Properties
  
  

Hardness
6-7   
3-4   

Grain Size
Medium Grained   
Fine Grained   

Fracture
Pervasive   
Conchoidal   

Streak
Bluish Black   
White   

Porosity
Highly Porous   
Less Porous   

Luster
Dull   
Pearly to Shiny   

Compressive Strength
92.40 N/mm2   
21
Not Available   

Cleavage
Not Available   
Non-Existent   

Toughness
2   
1   

Specific Gravity
2.38   
Not Available   

Transparency
Opaque   
Opaque   

Density
Not Available   
Not Available   

Thermal Properties
  
  

Resistance
Heat Resistant, Impact Resistant   
Heat Resistant, Wear Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
China   
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam   

Africa
East Africa   
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe   

Europe
Italy   
United Kingdom   

Others
Not Yet Found   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Not Yet Found   
USA   

South America
Not Yet Found   
Colombia   

Deposits in Oceania Continent
  
  

Australia
Queensland   
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula   

Summary >>
<< Reserves

All about Comendite and Oolite Properties

Know all about Comendite and Oolite properties here. All properties of rocks are important as they define the type of rock and its application. Comendite belongs to Igneous Rocks while Oolite belongs to Sedimentary Rocks.Texture of Comendite is Porphyritic whereas that of Oolite is Clastic or Non-Clastic. Comendite appears Foliated and Oolite appears Rounded and Rough. The luster of Comendite is dull while that of Oolite is pearly to shiny. Comendite is available in blue, bluish - grey colors whereas Oolite is available in black, blue, brown, cream, green, grey, pink, red, silver, white, yellow colors. The commercial uses of Comendite are cemetery markers and that of Oolite are creating artwork, jewelry, used in aquariums.

Compare Igneous Rocks

Igneous Rocks

Igneous Rocks

» More Igneous Rocks

Compare Igneous Rocks

» More Compare Igneous Rocks