Essexite

Quartzite

Essexite and Quartzite

Essexite

Quartzite

Add ⊕

1 Definition

1.1 Definition

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

Quartzite is a non-foliated metamorphic rock that forms by the metamorphism of pure quartz Sandstone

1.2 History

1.2.1 Origin

USA

Unknown

1.2.2 Discoverer

Unknown

1.3 Etymology

From the locality in Essex County, Massachusetts,US

From quartz + -ite

1.4 Class

Igneous Rocks

Metamorphic Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

1.5 Family

1.5.1 Group

Plutonic

Not Applicable

1.6 Other Categories

Fine Grained Rock, Opaque Rock

Medium Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Granular

Foliated, Granular

2.2 Color

Dark Grey to Black

Black, Blue, Brown, Green, Light Grey, Purple, White, Yellow

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

Lustrous

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Homes, Interior Decoration

Countertops, Decorative Aggregates, Flooring, Homes

3.1.2 Exterior Uses

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

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

3.1.3 Other Architectural Uses

Curbing

3.2 Industry

3.2.1 Construction Industry

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

Arrowheads, As Dimension Stone, Cement Manufacture, Construction Aggregate, Cutting Tool, for Road Aggregate, Making natural cement, Production of Glass and Ceramics, Rail Track Ballast, Roadstone

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Jewellery, Monuments, Sculpture

3.4 Other Uses

3.4.1 Commercial Uses

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

An Oil and Gas Reservoir, As armour rock for sea walls, Cemetery Markers, Commemorative Tablets, In aquifers, Laboratory bench tops, Petroleum reservoirs, Soil Conditioner, Source of Magnesia (MgO), Tombstones, Used in aquariums

4 Types

4.1 Types

Not Available

4.2 Features

Is one of the oldest rock, Smooth to touch

Generally rough to touch, Is one of the oldest 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

4.3.6 Petroglyphs

Not 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.

Quartzite forms from sandstone and the mineral quartz being put under extreme heat and pressure.

5.2 Composition

5.2.1 Mineral Content

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

Chlorite, Epidote, Hematite, Kyanite, Magnetite, Muscovite or Illite, Quartz

5.2.2 Compound Content

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

Aluminium Oxide, CaO, Iron(III) Oxide, MgO, Sodium Oxide, 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

Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Regional Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Biological Weathering, Chemical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Coastal Erosion, Glacier Erosion, Water Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

76-7

1 7

6.1.2 Grain Size

Fine Grained

Medium Grained

6.1.3 Fracture

Conchoidal

Uneven, Splintery or Conchoidal

6.1.4 Streak

Black

White

6.1.5 Porosity

Highly Porous

Less Porous

6.1.6 Luster

Not Available

Vitreous

6.1.7 Compressive Strength

NA115.00 N/mm²

0.15 450

6.1.8 Cleavage

Not Available

Indiscernible

6.1.9 Toughness

1.6

1.9

6.1.10 Specific Gravity

Not Available2.6-2.8

0 8.4

6.1.11 Transparency

Opaque

Transparent to Translucent

6.1.12 Density

Not Available2.32-2.42 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NA0.75 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

India, Russia

China, India, Israel, Russia, South Korea, Thailand, Turkey

7.1.2 Africa

South Africa

Ethiopia, Morocco, South Africa, Zimbabwe

7.1.3 Europe

Germany, Greece, Italy, Scotland, Turkey

England, Italy, Norway, Scotland, Sweden, United Kingdom

7.1.4 Others

Greenland

7.2 Deposits in Western Continents

7.2.1 North America

Canada, USA

Bahamas, Canada, USA

7.2.2 South America

Brazil, Colombia, Venezuela

7.3 Deposits in Oceania Continent

7.3.1 Australia

New Zealand, Queensland

New Zealand, Queensland, Western Australia

All about Essexite and Quartzite Properties

Know all about Essexite and Quartzite properties here. All properties of rocks are important as they define the type of rock and its application. Essexite belongs to Igneous Rocks while Quartzite belongs to Metamorphic Rocks.Texture of Essexite is Granular whereas that of Quartzite is Foliated, Granular. Essexite appears Banded and Quartzite appears Lustrous. The luster of Essexite is not available while that of Quartzite is vitreous. Essexite is available in dark grey to black colors whereas Quartzite is available in black, blue, brown, green, light grey, purple, white, yellow colors. The commercial uses of Essexite are cemetery markers, commemorative tablets, jewelry, sea defence, tombstones and that of Quartzite are an oil and gas reservoir, as armour rock for sea walls, cemetery markers, commemorative tablets, in aquifers, laboratory bench tops, petroleum reservoirs, soil conditioner, source of magnesia (mgo), tombstones, used in aquariums.