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Picrite
Picrite

Taconite
Taconite



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Picrite
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Taconite

Picrite vs Taconite

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Definition

Definition

Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine
Taconite is a low-grade iron ore which belongs to sedimentary rock and containing about 27% iron and 51% silica

History

Origin

Hawaii Islands
Western Australia, Minnesota

Discoverer

Unknown
Newton Horace Winchell

Etymology

From Greek pikros bitter + -ite, 19th century
From the name of Taconic Mountains in New England

Class

Igneous Rocks
Sedimentary Rocks

Sub-Class

Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock

Family

Group

Volcanic
-

Other Categories

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

Texture

Texture

Earthy, Rough
Banded, Trellis

Color

Black, Brown, Green, Grey, Pink, White, Yellow
Red, Reddish Brown

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Rough and Shiny
Layered, Banded, Veined and Shiny

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Homes, Interior Decoration
Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

As a Sintering Agent in Steel Industry to process Iron Ore, Cement Manufacture, for Road Aggregate, Manufacture of Magnesium and Dolomite Refractories, Roadstone, Used for flooring, stair treads, borders and window sills.
As Dimension Stone, Used for flooring, stair treads, borders and window sills.

Medical Industry

-
-

Antiquity Uses

Artifacts, Monuments, Sculpture
Artifacts

Other Uses

Commercial Uses

As a Feed Additive for Livestock, As armour rock for sea walls, Metallurgical Flux, Pottery, Source of Magnesia (MgO)
As a touchstone, Cemetery Markers, Creating Artwork

Types

Types

Oceanite
Iron formation

Features

Host Rock for Lead
Is one of the oldest rock

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Present

Formation

Formation

Picrite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.
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

Biotite, Olivine, Plagioclase, Pyrrhotite
Hematite, Magnetite, Quartz

Compound Content

Al, CaO, Carbon Dioxide, Mg, MgO
Fe, Iron(III) Oxide, Silicon Dioxide

Transformation

Metamorphism

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Impact Metamorphism, Regional Metamorphism
-

Weathering

Types of Weathering

Biological Weathering
Biological Weathering, Mechanical Weathering

Erosion

Types of Erosion

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

Properties

Physical Properties

Hardness

6.85.5-6
1 7
👆🏻

Grain Size

Fine Grained
Large and Coarse Grained

Fracture

Uneven
Uneven, Splintery or Conchoidal

Streak

White, Greenish White or Grey
White

Porosity

Less Porous
Highly Porous

Luster

Subvitreous to Dull
Earthy

Compressive Strength

189.00 N/mm2190.00 N/mm2
0.15 450
👆🏻

Cleavage

-
-

Toughness

2.1
1.5

Specific Gravity

2.75-2.925-5.3
0 8.4
👆🏻

Transparency

Opaque
Translucent to Opaque

Density

1.5-2.5 g/cm3-9999 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.88 kJ/Kg K3.20 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Africa

South Africa
Kenya, Morocco, South Africa, Tanzania

Europe

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

Others

-
Greenland, Mid-Atlantic Ridge

Deposits in Western Continents

North America

Canada, USA
Canada, Mexico, USA

South America

Brazil
Bolivia, Brazil

Deposits in Oceania Continent

Australia

-
New South Wales, Queensland, South Australia, Western Australia

Picrite vs Taconite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Picrite and Taconite Reserves. Picrite is a variety of high-magnesium olivine basalt that is very rich in the mineral olivine. Taconite is a low-grade iron ore which belongs to sedimentary rock and containing about 27% iron and 51% silica. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Picrite vs Taconite information and Picrite vs Taconite characteristics in the upcoming sections.

Picrite vs Taconite Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Picrite vs Taconite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Picrite and Properties of Taconite. Learn more about Picrite vs Taconite in the next section. The interior uses of Picrite include Countertops, Decorative aggregates, Homes and Interior decoration whereas the interior uses of Taconite include Decorative aggregates, Entryways, Flooring, Homes and Interior decoration. Due to some exceptional properties of Picrite and Taconite, they have various applications in construction industry. The uses of Picrite in construction industry include As a sintering agent in steel industry to process iron ore, Cement manufacture, For road aggregate, Manufacture of magnesium and dolomite refractories, Roadstone, Used for flooring, stair treads, borders and window sills. and that of Taconite include As dimension stone, Used for flooring, stair treads, borders and window sills..

More about Picrite and Taconite

Here you can know more about Picrite and Taconite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Picrite and Taconite consists of mineral content and compound content. The mineral content of Picrite includes Biotite, Olivine, Plagioclase, Pyrrhotite and mineral content of Taconite includes Hematite, Magnetite, Quartz. You can also check out the list of all Igneous Rocks. When we have to compare Picrite vs Taconite, the texture, color and appearance plays an important role in determining the type of rock. Picrite is available in black, brown, green, grey, pink, white, yellow colors whereas, Taconite is available in red, reddish brown colors. Appearance of Picrite is Rough and Shiny and that of Taconite is Layered, Banded, Veined and Shiny. Properties of rock is another aspect for Picrite vs Taconite. The hardness of Picrite is 6.8 and that of Taconite is 5.5-6. The types of Picrite are Oceanite whereas types of Taconite are Iron formation. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Picrite and Taconite is white, greenish white or grey. The specific heat capacity of Picrite is 0.88 kJ/Kg K and that of Taconite is 3.20 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Picrite is heat resistant whereas Taconite is heat resistant, impact resistant, pressure resistant, wear resistant.