Jadeitite

Chert

Jadeitite and Chert

Jadeitite

Chert

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Definition

Jadeitite is a metamorphic rock usually found in blueschist grade metamorphic terrains

Chert is a hard, dark, opaque sedimentary rock which is composed of silica with an amorphous fine-grained texture

History

Origin

Discoverer

Unknown

Etymology

From pyroxene mineral jadeite

From flint-like quartz, 1670s, of unknown origin- a local term, which has been taken into geological use

Class

Metamorphic Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Earthy

Banded, Rough

Color

Black, Brown, Green, Grey, White

Black, Brown, Green, Grey, Red, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Dull

Glassy or Pearly

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration

Decorative Aggregates, Homes

Exterior Uses

Garden Decoration, Office Buildings, Paving Stone

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

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Cutting Tool, Knives

Arrowheads, Construction Aggregate, Cutting Tool, Spear Points

Medical Industry

Antiquity Uses

Artifacts, Jewellery, Monuments, Sculpture

Artifacts, Monuments

Other Uses

Commercial Uses

Commemorative Tablets, Creating Artwork, Jewelry

Creating Artwork, Gemstone, In fire-starting tools, Jewelry, To ignite fire, Used in flintlock firearms

Types

Metamorphic rock

Flint, Jasper, Radiolarite, Common Chert, Chalcedony, Agate, Onyx, Opal, Magadi-type Chert, Porcelanite, Siliceous Sinter

Features

Host Rock for Lead

Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

Formation

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

Chert forms when microcrystals of silicon dioxide grow within soft sediments that become limestone or chalk. The chert formation can be either of chemical or biological origin.

Composition

Mineral Content

Carbonate, Magnetite, Pyrrhotite, Serpentine, Sulfides

Quartz, Silicon

Compound Content

Ca, CaO, Carbon Dioxide, KCl, MgO, Sulfur Dioxide, Sulphur

Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Erosion

✔ ✘

Types of Erosion

Coastal Erosion, Water Erosion, Wind Erosion

Chemical Erosion

Properties

Physical Properties

Hardness

3-56.5-7

1 7

👆🏻

Grain Size

Very fine-grained

Fracture

Uneven

Uneven, Splintery or Conchoidal

Streak

White, Greenish White or Grey

White

Porosity

Less Porous

Highly Porous

Luster

Waxy and Dull

Compressive Strength

310.00 N/mm²450.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

1.5

Specific Gravity

2.79-32.5-2.8

0 8.4

👆🏻

Transparency

Opaque

Translucent to Opaque

Density

2.5-3 g/cm³2.7 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.95 kJ/Kg K0.74 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Water Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Saudi Arabia, Singapore, South Korea

China, India, Iran, Japan, Oman, Russia, Saudi Arabia, Taiwan, Thailand, Vietnam

Africa

Ethiopia, Western Africa

Kenya, Morocco, South Africa, Tanzania

Europe

England, Georgia, Switzerland, United Kingdom

Austria, France, Greece, Italy, Malta, Poland, Portugal, Serbia, Spain, Sweden, United Kingdom

Others

Greenland, Mid-Atlantic Ridge

Deposits in Western Continents

North America

Canada

Canada, Mexico, USA

South America

Colombia

Bolivia, Brazil

Deposits in Oceania Continent

Australia

Central Australia, New South Wales, New Zealand, Western Australia

New South Wales, Queensland, South Australia, Western Australia

All about Jadeitite and Chert Properties

Know all about Jadeitite and Chert properties here. All properties of rocks are important as they define the type of rock and its application. Jadeitite belongs to Metamorphic Rocks while Chert belongs to Sedimentary Rocks.Texture of Jadeitite is Earthy whereas that of Chert is Banded, Rough. Jadeitite appears Rough and Dull and Chert appears Glassy or Pearly. The luster of Jadeitite and Chert is waxy and dull. Jadeitite is available in black, brown, green, grey, white colors whereas Chert is available in black, brown, green, grey, red, white colors. The commercial uses of Jadeitite are commemorative tablets, creating artwork, jewelry and that of Chert are creating artwork, gemstone, in fire-starting tools, jewelry, to ignite fire, used in flintlock firearms.