Comendite

Minette

Comendite and Minette

Comendite

Minette

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1 Definition

1.1 Definition

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

Minette is a variety of Lamprophyre and is porphyritic alkaline igneous rock which is mainly dominated by biotite and potassic feldspar

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 French mine ore, mine + ette

1.4 Class

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Volcanic

Plutonic

1.6 Other Categories

Medium Grained Rock, Opaque Rock

Coarse Grained Rock, Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Porphyritic

2.2 Color

Blue, Bluish - Grey

Black, Bluish - Grey, Brown, Dark Greenish - Grey, Green, Grey

2.3 Maintenance

Less

1.2 Durability

Durable

1.3.1 Water Resistant

✔ ✘

1.3.3 Scratch Resistant

✔ ✘

1.4.1 Stain Resistant

✔ ✘

1.5.1 Wind Resistant

✔ ✘

1.5.2 Acid Resistant

✔ ✘

1.6 Appearance

Foliated

Dull, Banded and Foilated

2 Uses

2.1 Architecture

2.1.1 Interior Uses

Countertops, Decorative Aggregates, Interior Decoration

2.2.1 Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration

3.1.1 Other Architectural Uses

Curbing

3.4 Industry

3.4.1 Construction Industry

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

As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories

3.5.1 Medical Industry

Not Yet Used

Taken as a Supplement for Calcium or Magnesium

3.6 Antiquity Uses

Artifacts

Artifacts, Monuments, Sculpture, Small Figurines

3.7 Other Uses

3.7.1 Commercial Uses

Cemetery Markers

An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)

4 Types

4.1 Types

Rhyolite

Minette, Alnoite, Camptonite, Monchiquite, Fourchite, Vogesite, Appinite and Spessartite

4.2 Features

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

Always found as volcanic pipes over deep continental crust, Host rock for Diamond, Is one of the oldest rock, Surfaces are often shiny

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.4.1 Famous Monuments

Not Applicable

Data Not Available

4.4.2 Sculpture

Not Yet Used

Used

5.1.3 Famous Sculptures

Not Applicable

Data Not Available

5.1.5 Pictographs

Not Used

Used

5.2.2 Petroglyphs

Not Used

Used

5.3.1 Figurines

Not Yet Used

Used

5.5 Fossils

Absent

7 Formation

7.1 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.

Minette formation takes place deep beneath the Earth’s surface at around 150 to 450 kms, and are erupted rapidly and violently.

7.4 Composition

7.4.1 Mineral Content

Albite, Amphibole, Quartz

Amphibole, Carbonate, Garnet, Micas, Olivine, Phlogopite, Pyroxene

7.4.3 Compound Content

Al, Fe, Potassium Oxide

Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Silicon Dioxide, Titanium Dioxide

7.5 Transformation

7.5.1 Metamorphism

✔ ✘

7.5.4 Types of Metamorphism

Cataclastic Metamorphism, Regional Metamorphism

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

7.5.6 Weathering

✔ ✘

7.5.8 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering

7.6.1 Erosion

✔ ✘

8.1.1 Types of Erosion

Coastal Erosion, Water Erosion

Chemical Erosion, Coastal Erosion, Sea Erosion, Wind Erosion

9 Properties

9.1 Physical Properties

9.1.1 Hardness

6-75-6

1 7

10.1.2 Grain Size

Medium Grained

Fine to Coarse Grained

10.1.3 Fracture

Pervasive

Conchoidal

10.1.4 Streak

Bluish Black

White

10.1.6 Porosity

Highly Porous

Very Less Porous

10.1.8 Luster

Dull

Subvitreous to Dull

10.1.10 Compressive Strength

92.40 N/mm²NA

0.15 450

10.1.16 Cleavage

Not Available

Conchoidal

10.1.18 Toughness

Not Available

10.1.19 Specific Gravity

2.382.86-2.87

0 8.4

10.1.22 Transparency

Opaque

Translucent to Opaque

10.1.23 Density

Not Available2.95-2.96 g/cm³

0 1400

10.3 Thermal Properties

10.3.1 Specific Heat Capacity

NANA

0.14 3.2

11.3.2 Resistance

Heat Resistant, Impact Resistant

12 Reserves

12.1 Deposits in Eastern Continents

12.1.1 Asia

China

Russia

12.1.2 Africa

East Africa

Angola, Botswana, Cameroon, Ethiopia, South Africa

12.1.3 Europe

Italy

England, Hungary, Iceland, United Kingdom

12.1.4 Others

Not Yet Found

Antarctica, Greenland

12.2 Deposits in Western Continents

12.2.1 North America

Not Yet Found

Canada, Mexico, USA

12.2.2 South America

Not Yet Found

Argentina, Colombia, Ecuador

12.3 Deposits in Oceania Continent

12.3.1 Australia

Queensland

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

All about Comendite and Minette Properties

Know all about Comendite and Minette properties here. All properties of rocks are important as they define the type of rock and its application. Comendite and Minette belong to Igneous Rocks.Texture of Comendite is Porphyritic whereas that of Minette is Porphyritic. Comendite appears Foliated and Minette appears Dull, Banded and Foilated. The luster of Comendite is dull while that of Minette is subvitreous to dull. Comendite is available in blue, bluish - grey colors whereas Minette is available in black, bluish - grey, brown, dark greenish - grey, green, grey colors. The commercial uses of Comendite are cemetery markers and that of Minette are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).