Essexite

Adakite

Essexite vs Adakite

Essexite

Adakite

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1 Definition

1.1 Definition

Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock

Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs

1.2 History

1.2.1 Origin

USA

Adak, Aleutian Islands

1.2.2 Discoverer

Unknown

Defant and Drummond

1.3 Etymology

From the locality in Essex County, Massachusetts,US

From Adak, Aleutian Islands

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

Plutonic

Volcanic

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Fine Grained Rock, Medium Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Granular

Porphyritic

2.2 Color

Dark Grey to Black

Black, Brown, Light to Dark 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

Banded

Dull and Soft

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Homes, Interior Decoration

Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens

3.1.2 Exterior Uses

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

As Building Stone, As Facing Stone, Office Buildings

3.1.3 Other Architectural Uses

Curbing

Whetstones

3.2 Industry

3.2.1 Construction Industry

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Monuments, Sculpture, Small Figurines

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers, Commemorative Tablets, Jewelry, Sea Defence, Tombstones

Commemorative Tablets, Pottery, Used in aquariums

4 Types

4.1 Types

Not Available

4.2 Features

Is one of the oldest rock, Smooth to touch

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

4.3 Archaeological Significance

4.3.1 Monuments

Used

4.3.2 Famous Monuments

Data Not Available

4.3.3 Sculpture

Used

4.3.4 Famous Sculptures

Data Not Available

4.3.5 Pictographs

Not Used

Used

4.3.6 Petroglyphs

Not Used

Used

4.3.7 Figurines

Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

Essexite is a type of igneous rock, which is usually dark grey to black plutonic rock. For the formation of essexite, suitable magma with exact composition of K, Ba, Rb, Cs, Sr should be produced.

Adakite rocks are formed when the hydrous fluids are released from minerals that break down in metamorphosed basalt, and rise into the mantle they initiate partial melting.

5.2 Composition

5.2.1 Mineral Content

Augite, Feldspar, Hornblende, Nepheline, Olivine, Plagioclase, Pyroxene

Olivine, Plagioclase, Pyroxene

5.2.2 Compound Content

Aluminium Oxide, Ba, Ca, Cs, Potassium, Rb, Sodium, Sr

Aluminium Oxide, MgO, Silicon Dioxide

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

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

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering

Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Coastal Erosion, Glacier Erosion, Water Erosion

Coastal Erosion, Sea Erosion, Water Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

73-4

1 7

6.1.2 Grain Size

Fine Grained

Fine to Medium Grained

6.1.3 Fracture

Conchoidal

6.1.4 Streak

Black

Bluish Black

6.1.5 Porosity

Highly Porous

Less Porous

6.1.6 Luster

Not Available

Grainy, Pearly and Vitreous

6.1.7 Compressive Strength

NANA

0.15 450

6.1.8 Cleavage

Not Available

6.1.9 Toughness

1.6

Not Available

6.1.10 Specific Gravity

Not AvailableNot Available

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

Not AvailableNot Available

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NANA

0.14 3.2

6.2.2 Resistance

Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

India, Russia

7.1.2 Africa

South Africa

Ethiopia, Somalia, South Africa

7.1.3 Europe

Germany, Greece, Italy, Scotland, Turkey

Iceland

7.1.4 Others

Greenland

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada, USA

7.2.2 South America

Brazil, Colombia, Venezuela

Brazil

7.3 Deposits in Oceania Continent

7.3.1 Australia

New Zealand, Queensland

Not Yet Found

Essexite vs Adakite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Essexite and Adakite Reserves. Essexite which is also known as nepheline monzogabbro, is a dark gray or black holocrystalline plutonic Iigneous Rock. Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Essexite vs Adakite information and Essexite vs Adakite characteristics in the upcoming sections.

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Essexite vs Adakite Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Essexite vs Adakite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Essexite and Properties of Adakite. Learn more about Essexite vs Adakite in the next section. The interior uses of Essexite include Decorative aggregates, Homes and Interior decoration whereas the interior uses of Adakite include Decorative aggregates, Floor tiles, Homes, Hotels and Kitchens. Due to some exceptional properties of Essexite and Adakite, they have various applications in construction industry. The uses of Essexite in construction industry include As dimension stone, Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate and that of Adakite include As dimension stone, Cobblestones, Rail track ballast, Roadstone.

More about Essexite and Adakite

Here you can know more about Essexite and Adakite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Essexite and Adakite consists of mineral content and compound content. The mineral content of Essexite includes Augite, Feldspar, Hornblende, Nepheline, Olivine, Plagioclase, Pyroxene and mineral content of Adakite includes Olivine, Plagioclase, Pyroxene. You can also check out the list of all Igneous Rocks. When we have to compare Essexite vs Adakite, the texture, color and appearance plays an important role in determining the type of rock. Essexite is available in dark grey to black colors whereas, Adakite is available in black, brown, light to dark grey colors. Appearance of Essexite is Banded and that of Adakite is Dull and Soft. Properties of rock is another aspect for Essexite vs Adakite. The hardness of Essexite is 7 and that of Adakite is 3-4. The types of Essexite are Not Available whereas types of Adakite are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Essexite is black while that of Adakite is bluish black. The specific heat capacity of Essexite is Not Available and that of Adakite is Not Available. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Essexite is impact resistant, pressure resistant, wear resistant whereas Adakite is heat resistant, pressure resistant, wear resistant.