Evaporite and Banded iron formation

Evaporite

Definition

A water-soluble mineral sediment resulting from concentration and crystallization by evaporation from an aqueous solution

Banded iron formation are distinctive units of sedimentary rock that are almost always of Precambrian age

History

Origin

USA

Western Australia, Minnesota

Discoverer

Usiglio

Unknown

Etymology

From a sediment left after the evaporation

From its formation process

Class

Sedimentary Rocks

Sub-Class

Durable Rock, Soft Rock

Durable Rock, Medium Hardness Rock

Family

Group

Not Applicable

Other Categories

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

Coarse Grained Rock, Opaque Rock

Texture

Earthy

Banded, Trellis

Color

Colourless, Green, Grey, Silver, White

Red, Reddish Brown

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Appearance

Glassy, Vesicular and Foilated

Layered, Banded, Veined and Shiny

Uses

Architecture

Interior Uses

Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration

Decorative Aggregates, Homes

Exterior Uses

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

Paving Stone, Office Buildings

Other Architectural Uses

Curbing

Curbing, Whetstones

Industry

Construction Industry

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

As Dimension Stone, Used for flooring, stair treads, borders and window sills.

Medical Industry

Taken as a Supplement for Calcium or Magnesium

Not Yet Used

Antiquity Uses

Artifacts

Other Uses

Commercial Uses

Used in the manufacture of Ceramic Powder, Used in the preparation of Sulfuric Acid and Silicon Diborite

As a touchstone, Cemetery Markers, Creating Artwork

Types

Not Available

Algoma-type , Lake Superior-type, Superior-type and Taconite

Features

Generally rough to touch, Splintery, Veined

Is one of the oldest rock

Archaeological Significance

Monuments

Not Yet Used

Famous Monuments

Not Applicable

Sculpture

Not Yet Used

Famous Sculptures

Not Applicable

Pictographs

Used

Not Used

Petroglyphs

Used

Not Used

Figurines

Not Yet Used

Fossils

Present

Formation

Evaporite is water-soluble mineral sediment which forms from concentration and crystallization by evaporation from an aqueous solution.

The banded iron layers are formed in sea water when oxygen is released by photosynthetic cyano-bacteria. The oxygen then combines with dissolved iron in ocean to form insoluble iron oxides, which precipitated out, forming a thin layer of banded iron formation on ocean floor.

Composition

Mineral Content

Calcite, Cancrinite, Gypsum, Kyanite, Magnetite

Hematite, Magnetite, Quartz

Compound Content

CaMg(CO₃)₂, CaO, Calcium Sulfate, KCl, MgO, NaCl

Fe, Iron(III) Oxide, Silicon Dioxide

Transformation

Metamorphism

Yes

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Not Applicable

Weathering

Yes

Types of Weathering

Not Applicable

Chemical Weathering

Erosion

Yes

Types of Erosion

Not Applicable

Coastal Erosion, Wind Erosion

Properties

Physical Properties

Hardness

2-3

5.5-6

Grain Size

Medium to Fine Coarse Grained

Large and Coarse Grained

Fracture

Conchoidal

Uneven, Splintery or Conchoidal

Streak

White

Porosity

Less Porous

Highly Porous

Luster

Subvitreous to Dull

Earthy

Compressive Strength

225.00 N/mm²

Not Available

Cleavage

Perfect

Imperfect

Toughness

Not Available

1.5

Specific Gravity

2.86-2.99

5.0-5.3

Transparency

Translucent

Translucent to Opaque

Density

2.8-2.9 g/cm³

Not Available

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K

3.20 kJ/Kg K

Resistance

Heat Resistant, Pressure Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Not Available

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

Africa

Not Available

Kenya, Morocco, South Africa, Tanzania

Europe

United Kingdom

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

Others

Not Yet Found

Greenland, Mid-Atlantic Ridge

Deposits in Western Continents

North America

USA

Canada, Mexico, USA

South America

Colombia, Paraguay

Bolivia, Brazil

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

New South Wales, Queensland, South Australia, Western Australia

Summary >>

<< Reserves

All about Evaporite and Banded iron formation Properties

Know all about Evaporite and Banded iron formation properties here. All properties of rocks are important as they define the type of rock and its application. Evaporite and Banded iron formation belong to Sedimentary Rocks.Texture of Evaporite is Earthy whereas that of Banded iron formation is Banded, Trellis. Evaporite appears Glassy, Vesicular and Foilated and Banded iron formation appears Layered, Banded, Veined and Shiny. The luster of Evaporite is subvitreous to dull while that of Banded iron formation is earthy. Evaporite is available in colourless, green, grey, silver, white colors whereas Banded iron formation is available in red, reddish brown colors. The commercial uses of Evaporite are used in the manufacture of ceramic powder, used in the preparation of sulfuric acid and silicon diborite and that of Banded iron formation are as a touchstone, cemetery markers, creating artwork.