Websterite

Talc carbonate

Websterite and Talc carbonate

Websterite

Talc carbonate

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Definition

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

Talc carbonate is nothing but a rock sequence or a mineral composition found in metamorphic ultramafic rocks.

History

Origin

Webster, North Carolina

China, USA, Middle east

Discoverer

Unknown

Etymology

From the town of Webster located in North Carolina

From medieval Latin, talcum

Class

Igneous Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Soft Rock

Family

Group

Plutonic

Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Clastic, Granular, Phaneritic, Porphyritic

Very Soft

Color

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

Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Layered, Banded, Veined and Shiny

Soft

Uses

Architecture

Interior Uses

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

Decorative Aggregates, Interior Decoration

Exterior Uses

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

Garden Decoration

Other Architectural Uses

Curbing

Powder

Industry

Construction Industry

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

Source of calcium

Medical Industry

Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts

Artifacts, Jewellery, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

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

Manufacturing of baby powder

Types

Ultramafic rock

Sedimentary rock

Features

Generally rough to touch, Is one of the oldest rock

Easily splits into thin plates, Generally rough to touch, Host Rock for Lead

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

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

Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Talc Carbonate is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

Composition

Mineral Content

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

Carbonate, Chlorite, Magnesium

Compound Content

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

CaO, Carbon Dioxide, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Impact Metamorphism

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

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

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

Properties

Physical Properties

Hardness

71-2

1 7

👆🏻

Grain Size

Coarse Grained

Fine Grained

Fracture

Uneven

Flat

Streak

White, Greenish White or Grey

White

Porosity

Less Porous

Luster

Dull to Vitreous to Submetallic

Pearly

Compressive Strength

95.00 N/mm²250.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

Specific Gravity

3.2-3.52.86

0 8.4

👆🏻

Transparency

Opaque

Translucent

Density

3.1-3.6 g/cm³2.8-2.9 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.79 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Russia

Africa

South Africa

Ethiopia, Ghana, Western Africa

Europe

Germany, Greece, Italy, Scotland, Turkey

England

Others

Greenland

Deposits in Western Continents

North America

Canada, USA

South America

Brazil, Colombia, Venezuela

Argentina, Bolivia, Uruguay

Deposits in Oceania Continent

Australia

New Zealand, Queensland

Central Australia, South Australia, Western Australia

All about Websterite and Talc carbonate Properties

Know all about Websterite and Talc carbonate properties here. All properties of rocks are important as they define the type of rock and its application. Websterite belongs to Igneous Rocks while Talc carbonate belongs to Metamorphic Rocks.Texture of Websterite is Clastic, Granular, Phaneritic, Porphyritic whereas that of Talc carbonate is Very Soft. Websterite appears Layered, Banded, Veined and Shiny and Talc carbonate appears Soft. The luster of Websterite is dull to vitreous to submetallic while that of Talc carbonate is pearly. Websterite is available in black to grey, bluish - grey, dark greenish - grey, green, light greenish grey colors whereas Talc carbonate is available in grey, white colors. The commercial uses of Websterite are cemetery markers, commemorative tablets, creating artwork, laboratory bench tops, jewelry, sea defence, tombstones and that of Talc carbonate are manufacturing of baby powder.