Flint

Jasperoid

Flint and Jasperoid

Flint

Jasperoid

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Definition

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

Jasperoid is a rare, peculiar type of metasomatic alteration of rocks

History

Origin

USA

Discoverer

Unknown

Etymology

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

From silica, the main mineral content of Jasperoid

Class

Sedimentary Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

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

Texture

Banded, Rough

Earthy

Color

Black, Brown, Green, Grey, Red, White

Black, Brown, Green, Grey, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy or Pearly

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration

Exterior Uses

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

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

Other Architectural Uses

Curbing

Industry

Construction Industry

Arrowheads, Cutting Tool, Spear Points

As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics, Serves as an Oil and Gas Reservoir rock

Medical Industry

Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts

Artifacts, Jewellery, Monuments, Sculpture

Other Uses

Commercial Uses

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

An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)

Types

Chert and Jasper

Features

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

Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

Formation

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

Jasperoid is a rare and peculiar type of metasomatic alteration of rocks. It is formed by extreme alteration of wall rocks within a shear zone which may occur in sediments, andesites, trachytes and basalts.

Composition

Mineral Content

Silicon

Clay Minerals, Pyrite, Quartz, Sulfides

Compound Content

Silicon Dioxide

NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion

Properties

Physical Properties

Hardness

73.5-4

1 7

👆🏻

Grain Size

Very fine-grained

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

White

Porosity

Highly Porous

Less Porous

Luster

Vitreous

Vitreous and Pearly

Compressive Strength

450.00 N/mm²140.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

1.5

Specific Gravity

2.5-2.82.8-3

0 8.4

👆🏻

Transparency

Translucent to Opaque

Transparent to Translucent

Density

2.7-2.71 g/cm³2.8-2.9 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.74 kJ/Kg K0.92 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Azerbaijan, China, Russia

China, India

Africa

Morocco, Namibia

Europe

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

Austria, Italy, Romania, Spain, Switzerland

Others

Deposits in Western Continents

North America

USA

Mexico, USA

South America

Bolivia

Brazil, Colombia

Deposits in Oceania Continent

Australia

New Zealand, South Australia

New South Wales, Queensland, Yorke Peninsula

All about Flint and Jasperoid Properties

Know all about Flint and Jasperoid properties here. All properties of rocks are important as they define the type of rock and its application. Flint and Jasperoid belong to Sedimentary Rocks.Texture of Flint is Banded, Rough whereas that of Jasperoid is Earthy. Flint appears Glassy or Pearly and Jasperoid appears Glassy or Pearly. The luster of Flint is vitreous while that of Jasperoid is vitreous and pearly. Flint is available in black, brown, green, grey, red, white colors whereas Jasperoid is available in black, brown, green, grey, pink, white colors. The commercial uses of Flint are creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms and that of Jasperoid are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).