Comendite

Limestone

Comendite and Limestone

Comendite

Limestone

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1 Definition

1.1 Definition

Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite

Limestone is a sedimentary rock composed mostly of calcite and aragonite, which are different crystal forms of calcium carbonate

1.2 History

1.2.1 Origin

Italy

New Zealand

1.2.2 Discoverer

Unknown

Belsazar Hacquet

1.3 Etymology

Comendite derives its name from the area of Le Commende on San Pietro Island in Italy

From lime and stone in late 14th Century

1.4 Class

Igneous Rocks

Sedimentary Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Volcanic

Not Applicable

1.6 Other Categories

Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Porphyritic

Clastic or Non-Clastic

2.2 Color

Blue, Bluish - Grey

Beige, Black, Blue, Brown, Cream, Gold, Green, Grey, Light Green, Light Grey, Linen, Pink, Red, Rust, Silver, White, Yellow

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

Foliated

Rough and Banded

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Countertops, Decorative Aggregates, Interior Decoration

Decorative Aggregates, Interior Decoration

3.1.2 Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration

As Building Stone, As Facing Stone, Garden Decoration, Office Buildings

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 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, for Road Aggregate, Production of Glass and Ceramics, Raw material for the manufacture of mortar, Roadstone, Source of calcium

3.2.2 Medical Industry

Not Yet Used

In Chemical and Pharmaceutical Industry, Medicines and Cosmetics

3.3 Antiquity Uses

Artifacts

Artifacts, Monuments, Sculpture, Small Figurines

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers

Animal feed filler, As a Feed Additive for Livestock, Paper Industry, Raw material for manufacture of quicklime, slaked lime, Soil Conditioner, Used in aquariums, Whiting material in toothpaste, paint and paper

4 Types

4.1 Types

Rhyolite

Chalk, Coquina, Fossiliferous Limestone, Lithographic Limestone, Oolitic Limestone, Travertine, Tufa

4.2 Features

Very fine grained rock, It is One of the Oldest, Strongest and Hardest Rock

Host Rock for Lead, Stalactites and stalagmites are formed from this rock, Zinc and Copper Deposits

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Not Applicable

Acropolis of Athens in Greece, Agia Sophia in Istanbul, Turkey, Al Aqsa Mosque in Jerusalem, Angkor Wat in Cambodia, Big Ben in London, Charminar in Hyderabad, India, Chhatrapati Shivaji Terminus in Maharashtra, India, Chichen Itza in Mexico, Empire State Building in New York, Khajuraho Temples, India, Kremlin in Moscow, Louvre in Paris, France, Neuschwanstein in Bavaria, Potala Palace in Lahasa, Tibet, Wailing Wall in Jerusalem

4.3.3 Sculpture

Not Yet Used

Used

4.3.4 Famous Sculptures

Not Applicable

Ajanta Caves in Maharashtra, India, Elephanta Caves in Maharashtra, India

4.3.5 Pictographs

Not Used

Used

4.3.6 Petroglyphs

Not Used

Used

4.3.7 Figurines

Not Yet Used

Used

4.4 Fossils

Absent

Present

5 Formation

5.1 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.

Limestone is a sedimentary rock which is mainly made up of calcium carbonate.

5.2 Composition

5.2.1 Mineral Content

Albite, Amphibole, Quartz

Calcite, Chert, Clay, Dolomite, Quartz, Sand, Silt

5.2.2 Compound Content

Al, Fe, Potassium Oxide

Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, FeO, MgO

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Cataclastic Metamorphism, Regional Metamorphism

Not Applicable

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Coastal Erosion, Water Erosion

Chemical Erosion, Coastal Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

6-73-4

1 7

6.1.2 Grain Size

Medium Grained

Fine Grained

6.1.3 Fracture

Pervasive

Splintery

6.1.4 Streak

Bluish Black

White

6.1.5 Porosity

Highly Porous

Less Porous

6.1.6 Luster

Dull

Dull to Pearly

6.1.7 Compressive Strength

92.40 N/mm²115.00 N/mm²

0.15 450

6.1.8 Cleavage

Not Available

Non-Existent

6.1.9 Toughness

6.1.10 Specific Gravity

2.382.3-2.7

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

Not Available2.3-2.7 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NA0.91 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant

Pressure Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

China

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

7.1.2 Africa

East Africa

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

7.1.3 Europe

Italy

United Kingdom

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Not Yet Found

USA

7.2.2 South America

Not Yet Found

Colombia

7.3 Deposits in Oceania Continent

7.3.1 Australia

Queensland

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

All about Comendite and Limestone Properties

Know all about Comendite and Limestone properties here. All properties of rocks are important as they define the type of rock and its application. Comendite belongs to Igneous Rocks while Limestone belongs to Sedimentary Rocks.Texture of Comendite is Porphyritic whereas that of Limestone is Clastic or Non-Clastic. Comendite appears Foliated and Limestone appears Rough and Banded. The luster of Comendite is dull while that of Limestone is dull to pearly. Comendite is available in blue, bluish - grey colors whereas Limestone is available in beige, black, blue, brown, cream, gold, green, grey, light green, light grey, linen, pink, red, rust, silver, white, yellow colors. The commercial uses of Comendite are cemetery markers and that of Limestone are animal feed filler, as a feed additive for livestock, paper industry, raw material for manufacture of quicklime, slaked lime, soil conditioner, used in aquariums, whiting material in toothpaste, paint and paper.