Anorthosite

Oolite

Anorthosite and Oolite

Anorthosite

Oolite

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Definition

Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase

Oolite is a sedimentary rock formed from ooids, spherical grains which are composed of concentric layers of calcite

History

Origin

Discoverer

Unknown

William Smith

Etymology

From French anorthose plagioclase + -ite1

From oo- + -lite, after German Oolit. A rock consisting of fine grains of carbonate of lime

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Plutonic

Volcanic

Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Foliated, Glassy

Clastic or Non-Clastic

Color

Black, Bluish - Grey, Brown, Green, Grey, Light Greenish Grey, Pink, White

Black, Blue, Brown, Cream, Green, Grey, Pink, Red, Silver, White, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Layered, Banded, Veined and Shiny

Rounded and Rough

Uses

Architecture

Interior Uses

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration

Decorative Aggregates, Flooring, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration

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

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Cement Manufacture, for Road Aggregate

Cement Manufacture, Cobblestones, Landscaping

Medical Industry

Antiquity Uses

Artifacts, Sculpture, Small Figurines

Artifacts

Other Uses

Commercial Uses

Creating Artwork, Curling

Creating Artwork, Jewelry, Used in aquariums

Types

Proterozoic Anorthosite and Archean Anorthosite

Pisolitic Oolite and Oncolitic Oolite

Features

Generally rough to touch, Is one of the oldest rock

Available in lots of colors, Generally rough to touch, Very fine grained rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

Formation

Anorthosite is a phaneritic, intrusive igneous rock which is characterized by a predominance of plagioclase feldspar which is almost 90–100%, and a minimal mafic component.

Oolites form when layers of calcite are deposited around a sand grain or fossil piece and are rolled around in calm water, which makes them round.

Composition

Mineral Content

Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene

Calcite, Chert, Clay, Dolomite, Quartz, Sand, Silt

Compound Content

Ca, CaO, Chromium(III) Oxide, MgO, Sulfur Trioxide

Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, FeO, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion

Properties

Physical Properties

Hardness

5-63-4

1 7

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Grain Size

Coarse Grained

Fine Grained

Fracture

Irregular

Conchoidal

Streak

White

Porosity

Less Porous

Luster

Pearly to Subvitreous

Pearly to Shiny

Compressive Strength

180.00 N/mm²40.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

2.62-2.82-9999

0 8.4

👆🏻

Transparency

Translucent

Opaque

Density

2.7-4 g/cm³-9999 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.65 kJ/Kg K

0.14 3.2

👆🏻

Resistance

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

Heat Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam

Africa

Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe

Europe

Bulgaria, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Malta, Poland, Portugal, Romania, Slovenia, Spain, Sweden, The Czech Republic

United Kingdom

Others

Deposits in Western Continents

North America

Canada

USA

South America

Bolivia, Colombia

Colombia

Deposits in Oceania Continent

Australia

Central Australia, South Australia, Western Australia

Adelaide, New Zealand, Queensland, Victoria, Yorke Peninsula

All about Anorthosite and Oolite Properties

Know all about Anorthosite and Oolite properties here. All properties of rocks are important as they define the type of rock and its application. Anorthosite belongs to Igneous Rocks while Oolite belongs to Sedimentary Rocks.Texture of Anorthosite is Foliated, Glassy whereas that of Oolite is Clastic or Non-Clastic. Anorthosite appears Layered, Banded, Veined and Shiny and Oolite appears Rounded and Rough. The luster of Anorthosite is pearly to subvitreous while that of Oolite is pearly to shiny. Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors whereas Oolite is available in black, blue, brown, cream, green, grey, pink, red, silver, white, yellow colors. The commercial uses of Anorthosite are creating artwork, curling and that of Oolite are creating artwork, jewelry, used in aquariums.