Borolanite and Taconite

Borolanite

Taconite

Definition

Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix

Taconite is a low-grade iron ore which belongs to sedimentary rock and containing about 27% iron and 51% silica

History

Origin

Scotland

Western Australia, Minnesota

Discoverer

Unknown

Newton Horace Winchell

Etymology

From Alkalic Igneous complex near Loch Borralan in northwest Scotland

From the name of Taconic Mountains in New England

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Plutonic

Not Applicable

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Opaque Rock

Texture

Granular

Banded, Trellis

Color

Brown, Buff, Cream, Green, Grey, Pink, White

Red, Reddish Brown

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Banded and Foilated

Layered, Banded, Veined and Shiny

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration

Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration

Exterior Uses

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

As Building Stone, Garden Decoration, Paving Stone

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics

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

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts

Other Uses

Commercial Uses

Cemetery Markers

As a touchstone, Cemetery Markers, Creating Artwork

Types

Not Available

Features

Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock

Is one of the oldest rock

Archaeological Significance

Monuments

Used

Famous Monuments

Data Not Available

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Used

Not Used

Petroglyphs

Used

Not Used

Figurines

Used

Fossils

Absent

Present

Formation

Borolanites are formed due to alkaline igneous activities and are generally formed in thick continental crustal areas or in Cordilleran subduction zones.

Taconite is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. When the river reaches a lake or sea, its load of transported rocks settles or deposits at the bottom of sea or lake.

Composition

Mineral Content

Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite

Hematite, Magnetite, Quartz

Compound Content

Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

Fe, Iron(III) Oxide, Silicon Dioxide

Transformation

Metamorphism

Yes

Types of Metamorphism

Regional Metamorphism

Not Applicable

Weathering

Yes

Types of Weathering

Chemical Weathering, Mechanical Weathering

Biological Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

Wind Erosion

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

Properties

Physical Properties

Hardness

5.5-6

Grain Size

Fine Grained

Large and Coarse Grained

Fracture

Conchoidal to Uneven

Uneven, Splintery or Conchoidal

Streak

White

Porosity

Less Porous

Highly Porous

Luster

Greasy to Dull

Earthy

Compressive Strength

150.00 N/mm²

Not Available

Cleavage

Poor

Imperfect

Toughness

Not Available

1.5

Specific Gravity

2.6

5-5.3

Transparency

Translucent to Opaque

Density

2.6 g/cm³

Not Available

Thermal Properties

Specific Heat Capacity

Not Available

3.20 kJ/Kg K

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Indonesia, Iran, Russia, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Turkmenistan, Vietnam

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

Africa

Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

Kenya, Morocco, South Africa, Tanzania

Europe

Andorra, Finland, France, Great Britain, Italy, Norway, Portugal, Spain, Sweden

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

Others

Greenland

Greenland, Mid-Atlantic Ridge

Deposits in Western Continents

North America

Canada, USA

Canada, Mexico, USA

South America

Brazil, Chile, Colombia, Uruguay, Venezuela

Bolivia, Brazil

Deposits in Oceania Continent

Australia

New Zealand, Queensland, South Australia, Tasmania, Western Australia

New South Wales, Queensland, South Australia, Western Australia

Summary >>

<< Reserves

All about Borolanite and Taconite Properties

Know all about Borolanite and Taconite properties here. All properties of rocks are important as they define the type of rock and its application. Borolanite belongs to Igneous Rocks while Taconite belongs to Sedimentary Rocks.Texture of Borolanite is Granular whereas that of Taconite is Banded, Trellis. Borolanite appears Banded and Foilated and Taconite appears Layered, Banded, Veined and Shiny. The luster of Borolanite is greasy to dull while that of Taconite is earthy. Borolanite is available in brown, buff, cream, green, grey, pink, white colors whereas Taconite is available in red, reddish brown colors. The commercial uses of Borolanite are cemetery markers and that of Taconite are as a touchstone, cemetery markers, creating artwork.