Websterite

Oil shale

Websterite and Oil shale

Websterite

Oil shale

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1 Definition

1.1 Definition

Websterite is ultramafic and ultrabasic rock that consists of roughly equal proportions of orthopyroxene and clinopyroxene. It is a special type of pyroxenite.

Oil Shale is a fine-grained sedimentary rock from which oil is extracted

1.2 History

1.2.1 Origin

Webster, North Carolina

Unknown

1.2.2 Discoverer

Unknown

1.3 Etymology

From the town of Webster located in North Carolina

From Old English scealu in its base sense of thing that divides or separate

1.4 Class

Igneous Rocks

Sedimentary Rocks

1.4.1 Sub-Class

Durable Rock, Hard Rock

Durable Rock, Soft Rock

1.5 Family

1.5.1 Group

Plutonic

Not Applicable

1.6 Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Clastic, Granular, Phaneritic, Porphyritic

Splintery

2.2 Color

Black to Grey, Bluish - Grey, Dark Greenish - Grey, Green, Light Greenish Grey

Black, Brown, Buff, Green, Grey, Red, 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

Layered, Banded, Veined and Shiny

Muddy

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Interior Decoration

Not Yet Used

3.1.2 Exterior Uses

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

Not Yet Used

3.1.3 Other Architectural Uses

Curbing

Not Yet Used

3.2 Industry

3.2.1 Construction Industry

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

Cement Manufacture, Construction Aggregate, for Road Aggregate, Serves as an Oil and Gas Reservoir rock

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Artifacts

3.4 Other Uses

3.4.1 Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork, Laboratory bench tops, Jewelry, Sea Defence, Tombstones

An Oil and Gas Reservoir

4 Types

4.1 Types

Not Available

Carbonate-rich Shale, Siliceous Shale and Cannel Shale

4.2 Features

Generally rough to touch, Is one of the oldest rock

Easily splits into thin plates, Generally rough to touch, Is one of the oldest rock, Very fine grained rock

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

4.3.2 Famous Monuments

Data Not Available

Not Applicable

4.3.3 Sculpture

Not Yet Used

4.3.4 Famous Sculptures

Data Not Available

Not Applicable

4.3.5 Pictographs

Not Used

4.3.6 Petroglyphs

Not Used

4.3.7 Figurines

Not Yet Used

4.4 Fossils

Absent

Present

5 Formation

5.1 Formation

Websterite can be formed as cumulates in ultramafic intrusions by accumulation of pyroxene crystals at the base of the lava chamber.

Oil Shale forms on the beds of seas and lakes and its formation starts with the organic debris settling and accumulating at the bottom of a lake or sea which are then transformed into rock with the help of high temperature and pressure.

5.2 Composition

5.2.1 Mineral Content

Amphibole, Augite, Bronzite, Chromite, Diopside, Enstatite, Garnet, Hornblende, Hypersthene, Magnetite, Pyroxene

Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides

5.2.2 Compound Content

Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide

Ca, Fe, Mg, Silicon Dioxide, Sodium

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Burial Metamorphism, Impact Metamorphism

Not Applicable

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, Glacier Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Sea Erosion, Water Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

72-3

1 7

6.1.2 Grain Size

Coarse Grained

Very fine-grained

6.1.3 Fracture

Uneven

Not Available

6.1.4 Streak

White, Greenish White or Grey

White

6.1.5 Porosity

Less Porous

Highly Porous

6.1.6 Luster

Dull to Vitreous to Submetallic

Dull

6.1.7 Compressive Strength

NANA

0.15 450

6.1.8 Cleavage

Irregular

Slaty

6.1.9 Toughness

Not Available

2.6

6.1.10 Specific Gravity

3.2-3.52.2-2.8

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

3.1-3.6 g/cm³2.4-2.8 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NA0.39 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

India, Russia

Bangladesh, China, India, Israel, Jordan, Russia, Syria, Thailand, Turkey

7.1.2 Africa

South Africa

Ethiopia, Kenya, Morocco, South Africa, Tanzania

7.1.3 Europe

Germany, Greece, Italy, Scotland, Turkey

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Sweden, Switzerland

7.1.4 Others

Greenland

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

Bolivia, Brazil, Chile, Colombia, Ecuador, Peru, Venezuela

7.3 Deposits in Oceania Continent

7.3.1 Australia

New Zealand, Queensland

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

All about Websterite and Oil shale Properties

Know all about Websterite and Oil shale properties here. All properties of rocks are important as they define the type of rock and its application. Websterite belongs to Igneous Rocks while Oil shale belongs to Sedimentary Rocks.Texture of Websterite is Clastic, Granular, Phaneritic, Porphyritic whereas that of Oil shale is Splintery. Websterite appears Layered, Banded, Veined and Shiny and Oil shale appears Muddy. The luster of Websterite is dull to vitreous to submetallic while that of Oil shale is dull. Websterite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey colors whereas Oil shale is available in black, brown, buff, green, grey, red, yellow colors. The commercial uses of Websterite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones and that of Oil shale are an oil and gas reservoir.