Peridotite

Comendite

Peridotite and Comendite

Peridotite

Comendite

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1 Definition

1.1 Definition

Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle

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

1.2 History

1.2.1 Origin

Pike County, U.S

Italy

1.2.2 Discoverer

Unknown

1.3 Etymology

From French, from peridot +‎ -ite

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

1.4 Class

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

1.5 Family

1.5.1 Group

Plutonic

Volcanic

1.6 Other Categories

Coarse Grained Rock, Opaque Rock

Medium Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Phaneritic

Porphyritic

2.2 Color

Dark Greenish - Grey

Blue, Bluish - Grey

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

Rough and Shiny

Foliated

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Interior Decoration

Countertops, Decorative Aggregates, Interior Decoration

3.1.2 Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

As Dimension Stone, Cobblestones

Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Raw material for the manufacture of mortar

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Monuments, Sculpture, Small Figurines

Artifacts

3.4 Other Uses

3.4.1 Commercial Uses

Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds

Cemetery Markers

4 Types

4.1 Types

Dunite, Wehrlite, Harzburgite, Lherzolite and Pyrolite

Rhyolite

4.2 Features

Constitutes upper part of the Earth's mantle, Generally rough to touch, Host rock for Diamond, Is one of the oldest rock

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

4.3 Archaeological Significance

4.3.1 Monuments

Used

Not Yet Used

4.3.2 Famous Monuments

Data Not Available

Not Applicable

4.3.3 Sculpture

Used

Not Yet Used

4.3.4 Famous Sculptures

Data Not Available

Not Applicable

4.3.5 Pictographs

Used

Not Used

4.3.6 Petroglyphs

Used

Not Used

4.3.7 Figurines

Used

Not Yet Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

Peridotites can be formed in two ways: as mantle rocks formed during the accretion and differentiation of the Earth or as cumulate rocks formed by precipitation of olivine and pyroxenes from basaltic magmas.

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.

5.2 Composition

5.2.1 Mineral Content

Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene

Albite, Amphibole, Quartz

5.2.2 Compound Content

Ca, Fe, Mg, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide

Al, Fe, Potassium Oxide

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

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

Cataclastic Metamorphism, Regional Metamorphism

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

Chemical Erosion

Coastal Erosion, Water Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

5.5-66-7

1 7

6.1.2 Grain Size

Coarse Grained

Medium Grained

6.1.3 Fracture

Irregular

Pervasive

6.1.4 Streak

White

Bluish Black

6.1.5 Porosity

Less Porous

Highly Porous

6.1.6 Luster

Shiny

Dull

6.1.7 Compressive Strength

107.55 N/mm²92.40 N/mm²

0.15 450

6.1.8 Cleavage

Imperfect

Not Available

6.1.9 Toughness

2.1

6.1.10 Specific Gravity

3-3.012.38

0 8.4

6.1.11 Transparency

Translucent to Opaque

Opaque

6.1.12 Density

3.1-3.4 g/cm³Not Available

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

1.26 kJ/Kg KNA

0.14 3.2

1.1.5 Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant

2 Reserves

2.1 Deposits in Eastern Continents

2.1.1 Asia

China, India, Indonesia, Kazakhstan, Russia, South Korea, Thailand, Turkey

China

2.2.2 Africa

Morocco, South Africa

East Africa

2.2.3 Europe

Finland, France, Georgia, Germany, Great Britain, Italy, Kazakhstan, Netherlands, Norway, Spain, Switzerland, Venezuela

Italy

2.2.4 Others

Not Yet Found

2.3 Deposits in Western Continents

2.3.1 North America

Canada, USA

Not Yet Found

2.3.2 South America

Brazil

Not Yet Found

2.4 Deposits in Oceania Continent

2.4.1 Australia

New Zealand, Western Australia

Queensland

All about Peridotite and Comendite Properties

Know all about Peridotite and Comendite properties here. All properties of rocks are important as they define the type of rock and its application. Peridotite and Comendite belong to Igneous Rocks.Texture of Peridotite is Phaneritic whereas that of Comendite is Porphyritic. Peridotite appears Rough and Shiny and Comendite appears Foliated. The luster of Peridotite is shiny while that of Comendite is dull. Peridotite is available in dark greenish - grey colors whereas Comendite is available in blue, bluish - grey colors. The commercial uses of Peridotite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds and that of Comendite are cemetery markers.