Comendite

Basanite

Comendite and Basanite

Comendite

Basanite

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1 Definition

1.1 Definition

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

Basanite is a black basaltic rock which mainly contains plagioclase, augite, olivine and nepheline and is formerly used as a touchstone

1.2 History

1.2.1 Origin

Italy

Unknown

1.2.2 Discoverer

Unknown

1.3 Etymology

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

From Latin basanites + -ite

1.4 Class

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Hard 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

Aphanitic to Porphyritic

2.2 Color

Blue, Bluish - Grey

Black, Brown, Green, Grey, Red, White

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

Glassy or Pearly

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Countertops, Decorative Aggregates, Interior Decoration

Decorative Aggregates, Homes

3.1.2 Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration

As Building Stone, Garden Decoration, Office Buildings

3.1.3 Other Architectural Uses

Curbing

Whetstones

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

Arrowheads, Construction Aggregate, Cutting Tool, Spear Points

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts

Artifacts, Monuments

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers

As a touchstone, Creating Artwork, Gemstone, In fire-starting tools, Manufacture of tools, Metallurgical Flux, Jewelry, To ignite fire, Used in flintlock firearms

4 Types

4.1 Types

Rhyolite

Nepheline-Basanite, Analcite-Basanite and Leucite-Basanite

4.2 Features

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

Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate, Used as a touchstone

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Not Applicable

Data Not Available

4.3.3 Sculpture

Not Yet Used

4.3.4 Famous Sculptures

Not Applicable

4.3.5 Pictographs

Not Used

4.3.6 Petroglyphs

Not Used

4.3.7 Figurines

Not Yet Used

4.4 Fossils

Absent

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.

Basanite is a fine-grained, hard rock that forms when bits of lava shoot out of volcanoes.

5.2 Composition

5.2.1 Mineral Content

Albite, Amphibole, Quartz

Augite, Feldspar, Ilmenite, Olivine, Plagioclase

5.2.2 Compound Content

Al, Fe, Potassium Oxide

Potassium Oxide, Sodium Oxide, Silicon Dioxide

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Cataclastic Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Coastal Erosion, Water Erosion

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

6 Properties

6.1 Physical Properties

6.1.1 Hardness

6-77

1 7

6.1.2 Grain Size

Medium Grained

Fine Grained

6.1.3 Fracture

Pervasive

Uneven, Splintery or Conchoidal

6.1.4 Streak

Bluish Black

White

6.1.5 Porosity

Highly Porous

6.1.6 Luster

Dull

Waxy and Dull

6.1.7 Compressive Strength

92.40 N/mm²NA

0.15 450

6.1.8 Cleavage

Not Available

Non-Existent

6.1.9 Toughness

1.5

6.1.10 Specific Gravity

2.382.5-2.8

0 8.4

6.1.11 Transparency

Opaque

Translucent to Opaque

6.1.12 Density

Not Available2.7 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NA0.74 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Heat Resistant, Impact Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

China

Not Yet Found

7.1.2 Africa

East Africa

Uganda

7.1.3 Europe

Italy

Germany, Hungary, Italy, Spain

7.1.4 Others

Not Yet Found

Greenland, Mid-Atlantic Ridge

7.2 Deposits in Western Continents

7.2.1 North America

Not Yet Found

USA

7.2.2 South America

Not Yet Found

Bolivia, Brazil

7.3 Deposits in Oceania Continent

7.3.1 Australia

Queensland

New South Wales, New Zealand, Queensland, South Australia, Western Australia

All about Comendite and Basanite Properties

Know all about Comendite and Basanite properties here. All properties of rocks are important as they define the type of rock and its application. Comendite and Basanite belong to Igneous Rocks.Texture of Comendite is Porphyritic whereas that of Basanite is Aphanitic to Porphyritic. Comendite appears Foliated and Basanite appears Glassy or Pearly. The luster of Comendite is dull while that of Basanite is waxy and dull. Comendite is available in blue, bluish - grey colors whereas Basanite is available in black, brown, green, grey, red, white colors. The commercial uses of Comendite are cemetery markers and that of Basanite are as a touchstone, creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms.