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Basaltic Trachyandesite
Basaltic Trachyandesite

Comendite
Comendite



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Basaltic Trachyandesite
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Comendite

Basaltic Trachyandesite and Comendite

Definition

Definition

Basaltic Trachyandesite is an extrusive igneous rock which is a type of Basalt rock and is formed by the rapid cooling of basaltic lava exposed at or very near the Earth's surface
Comendite is a hard, peralkaline igneous rock, a type of light blue grey rhyolite

History

Origin

Unknown
Italy

Discoverer

Unknown
Unknown

Etymology

From its mineral and compound content and its relation with Basalt and Andesite rock
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, Medium Hardness Rock
Durable Rock, Hard Rock

Family

Group

Volcanic
Volcanic

Other Categories

Fine Grained Rock, Opaque Rock
Medium Grained Rock, Opaque Rock

Texture

Texture

Glassy, Massive, Porphyritic, Scoriaceous, Vesicular
Porphyritic

Color

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

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Dull and Soft
Foliated

Uses

Architecture

Interior Uses

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

Exterior Uses

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

Other Architectural Uses

Curbing, Whetstones
Curbing

Industry

Construction Industry

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone
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 Available
Not Available

Antiquity Uses

Artifacts, Monuments
Artifacts

Other Uses

Commercial Uses

An Oil and Gas Reservoir, Commemorative Tablets, Creating Artwork
Cemetery Markers

Types

Types

Alkaline Basalt, Boninite, High Alumina Basalt, Mid Ocean Ridge Basalt (MORB), Tholeiitic Basalt, Basaltic trachyandesite, Mugearite and Shoshonite
Rhyolite

Features

Has High structural resistance against erosion and climate, Very fine grained rock
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

Used
Not Used

Petroglyphs

Used
Not Used

Figurines

Used
Not Yet Used

Fossils

Absent
Absent

Formation

Formation

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

Olivine, Plagioclase, Pyroxene
Albite, Amphibole, Quartz

Compound Content

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

Transformation

Metamorphism

Types of Metamorphism

Contact Metamorphism
Cataclastic Metamorphism, Regional Metamorphism

Weathering

Types of Weathering

Biological Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

Not Available
Coastal Erosion, Water Erosion

Properties

Physical Properties

Hardness

66-7
1 7
👆🏻

Grain Size

Fine Grained
Medium Grained

Fracture

Conchoidal
Pervasive

Streak

White to Grey
Bluish Black

Porosity

Less Porous
Highly Porous

Luster

Not Available
Dull

Compressive Strength

37.50 N/mm292.40 N/mm2
0.15 450
👆🏻

Cleavage

Not Available
Not Available

Toughness

2.3
2

Specific Gravity

2.8-32.38
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

2.9-3.1 g/cm3Not Available
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg KNA
0.14 3.2
👆🏻

Resistance

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

Reserves

Deposits in Eastern Continents

Asia

India, Russia
China

Africa

South Africa
East Africa

Europe

Iceland
Italy

Others

Not Available
Not Available

Deposits in Western Continents

North America

Canada, USA
Not Available

South America

Brazil
Not Available

Deposits in Oceania Continent

Australia

Not Available
Queensland

All about Basaltic Trachyandesite and Comendite Properties

Know all about Basaltic Trachyandesite and Comendite properties here. All properties of rocks are important as they define the type of rock and its application. Basaltic Trachyandesite and Comendite belong to Igneous Rocks.Texture of Basaltic Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Comendite is Porphyritic. Basaltic Trachyandesite appears Dull and Soft and Comendite appears Foliated. The luster of Basaltic Trachyandesite is not available while that of Comendite is dull. Basaltic Trachyandesite is available in black, brown, light to dark grey colors whereas Comendite is available in blue, bluish - grey colors. The commercial uses of Basaltic Trachyandesite are an oil and gas reservoir, commemorative tablets, creating artwork and that of Comendite are cemetery markers.