Metapelite

Flint

Metapelite and Flint

Metapelite

Flint

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Definition

Metapelite is an old and currently not widely used field geological term for a clay rich fine-grained clastic sediment or sedimentary rock, i.e. mud or a mudstone

Flint is a hard type of sedimentary rock that produces a small piece of burning material when hit by steel

History

Origin

Discoverer

Unknown

Etymology

From Pelos or clay in Greek

From Old English flint - a type of rock mainly known for high hardness and for giving off sparks when struck

Class

Metamorphic Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

Family

Group

Other Categories

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Foliated

Banded, Rough

Color

Dark Greenish - Grey, Green, Light Green, Light Greenish Grey

Black, Brown, Green, Grey, Red, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Banded

Glassy or Pearly

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Homes, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone

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

Other Architectural Uses

Curbing

Industry

Construction Industry

Cement Manufacture, Construction Aggregate, for Road Aggregate

Arrowheads, Cutting Tool, Spear Points

Medical Industry

Antiquity Uses

Artifacts

Other Uses

Commercial Uses

Commemorative Tablets, Creating Artwork

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

Types

Metamorphic rock

Chert and Jasper

Features

Easily splits into thin plates, It is One of the Oldest, Strongest and Hardest Rock

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. Metapelite is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

Flint is formed by the decomposition and compaction of various organisms such as sponges and diatoms under the water.

Composition

Mineral Content

Albite, Chlorite, Quartz

Silicon

Compound Content

Aluminium Oxide, CaO, MgO

Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Water Erosion

Properties

Physical Properties

Hardness

5-67

1 7

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Grain Size

Medium to Fine Coarse Grained

Very fine-grained

Fracture

Fibrous

Conchoidal

Streak

White

Porosity

Highly Porous

Luster

Earthy

Vitreous

Compressive Strength

40.00 N/mm²450.00 N/mm²

0.15 450

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Cleavage

Toughness

1.5

Specific Gravity

3.4-3.72.5-2.8

0 8.4

👆🏻

Transparency

Opaque

Translucent to Opaque

Density

0-300 g/cm³2.7-2.71 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.72 kJ/Kg K0.74 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Azerbaijan, China, Russia

Africa

Western Africa

Europe

United Kingdom

Austria, Belgium, Cyprus, Denmark, France, Germany, Italy, Malta, Netherlands, Poland, Portugal, Romania, Spain, Sweden, Switzerland, Turkey, Ukraine, United Kingdom

Others

Deposits in Western Continents

North America

USA

South America

Brazil, Colombia, Ecuador

Bolivia

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

New Zealand, South Australia

All about Metapelite and Flint Properties

Know all about Metapelite and Flint properties here. All properties of rocks are important as they define the type of rock and its application. Metapelite belongs to Metamorphic Rocks while Flint belongs to Sedimentary Rocks.Texture of Metapelite is Foliated whereas that of Flint is Banded, Rough. Metapelite appears Banded and Flint appears Glassy or Pearly. The luster of Metapelite is earthy while that of Flint is vitreous. Metapelite is available in dark greenish - grey, green, light green, light greenish grey colors whereas Flint is available in black, brown, green, grey, red, white colors. The commercial uses of Metapelite are commemorative tablets, creating artwork and that of Flint are creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms.