Websterite

Borolanite

Websterite and Borolanite

Websterite

Borolanite

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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.

Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix

1.2 History

1.2.1 Origin

Webster, North Carolina

Scotland

1.2.2 Discoverer

Unknown

1.3 Etymology

From the town of Webster located in North Carolina

From Alkalic Igneous complex near Loch Borralan in northwest Scotland

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

1.6 Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Clastic, Granular, Phaneritic, Porphyritic

Granular

2.2 Color

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

Brown, Buff, Cream, Green, Grey, Pink, White

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

Banded and Foilated

3 Uses

3.1 Architecture

3.1.1 Interior Uses

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

Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration

3.1.2 Exterior Uses

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

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

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

As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics

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

Cemetery Markers

4 Types

4.1 Types

Not Available

4.2 Features

Generally rough to touch, Is one of the oldest rock

Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock

4.3 Archaeological Significance

4.3.1 Monuments

Not Yet Used

Used

4.3.2 Famous Monuments

Data Not Available

4.3.3 Sculpture

Not Yet Used

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

Not Yet Used

Used

4.4 Fossils

Absent

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.

Borolanites are formed due to alkaline igneous activities and are generally formed in thick continental crustal areas or in Cordilleran subduction zones.

5.2 Composition

5.2.1 Mineral Content

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

Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite

5.2.2 Compound Content

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

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

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

1.1.2 Types of Metamorphism

Burial Metamorphism, Impact Metamorphism

Regional Metamorphism

1.1.3 Weathering

✔ ✘

1.1.5 Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Chemical Weathering, Mechanical Weathering

1.1.7 Erosion

✔ ✘

1.2.3 Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion, Water Erosion, Wind Erosion

Wind Erosion

2 Properties

2.1 Physical Properties

2.2.1 Hardness

75.5-6

1 7

2.3.2 Grain Size

Coarse Grained

Fine Grained

2.3.3 Fracture

Uneven

Conchoidal to Uneven

2.3.4 Streak

White, Greenish White or Grey

White

2.3.5 Porosity

Less Porous

2.3.6 Luster

Dull to Vitreous to Submetallic

Greasy to Dull

2.3.7 Compressive Strength

NA150.00 N/mm²

0.15 450

2.3.8 Cleavage

Irregular

Poor

2.3.9 Toughness

Not Available

2.3.10 Specific Gravity

3.2-3.52.6

0 8.4

2.3.11 Transparency

Opaque

Translucent to Opaque

2.3.12 Density

3.1-3.6 g/cm³2.6 g/cm³

0 1400

2.4 Thermal Properties

2.4.1 Specific Heat Capacity

NANA

0.14 3.2

2.4.2 Resistance

Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Wear Resistant

3 Reserves

3.1 Deposits in Eastern Continents

3.1.1 Asia

India, Russia

Indonesia, Iran, Russia, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Turkmenistan, Vietnam

3.1.2 Africa

South Africa

Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

3.1.3 Europe

Germany, Greece, Italy, Scotland, Turkey

Andorra, Finland, France, Great Britain, Italy, Norway, Portugal, Spain, Sweden

3.1.4 Others

Greenland

3.2 Deposits in Western Continents

3.2.1 North America

Canada, USA

3.2.2 South America

Brazil, Colombia, Venezuela

Brazil, Chile, Colombia, Uruguay, Venezuela

3.3 Deposits in Oceania Continent

3.3.1 Australia

New Zealand, Queensland

New Zealand, Queensland, South Australia, Tasmania, Western Australia

All about Websterite and Borolanite Properties

Know all about Websterite and Borolanite properties here. All properties of rocks are important as they define the type of rock and its application. Websterite and Borolanite belong to Igneous Rocks.Texture of Websterite is Clastic, Granular, Phaneritic, Porphyritic whereas that of Borolanite is Granular. Websterite appears Layered, Banded, Veined and Shiny and Borolanite appears Banded and Foilated. The luster of Websterite is dull to vitreous to submetallic while that of Borolanite is greasy to dull. Websterite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey colors whereas Borolanite is available in brown, buff, cream, green, grey, pink, white colors. The commercial uses of Websterite and Borolanite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones.