Blueschist

Limestone

Blueschist and Limestone

Blueschist

Limestone

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Definition

Blueschist is a metamorphic rock which is generally blue in color and is formed under conditions of high pressure and low temperature

Limestone is a sedimentary rock composed mostly of calcite and aragonite, which are different crystal forms of calcium carbonate

History

Origin

USA

New Zealand

Discoverer

Edgar Bailey

Belsazar Hacquet

Etymology

From French schiste, Greek skhistos i.e. split

From lime and stone in late 14th Century

Class

Metamorphic Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Foliated

Clastic or Non-Clastic

Color

Blue, Bluish - Grey, Purple, Shades of Blue

Beige, Black, Blue, Brown, Cream, Gold, Green, Grey, Light Green, Light Grey, Linen, Pink, Red, Rust, Silver, White, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull and Banded

Rough and Banded

Uses

Architecture

Interior Uses

Floor Tiles, Flooring, Homes, Hotels, Kitchens

Decorative Aggregates, Interior Decoration

Exterior Uses

Garden Decoration, Office Buildings

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

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

Cement Manufacture, Cobblestones, for Road Aggregate, Production of Glass and Ceramics, Raw material for the manufacture of mortar, Roadstone, Source of calcium

Medical Industry

In Chemical and Pharmaceutical Industry, Medicines and Cosmetics

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling, Tombstones

Animal feed filler, As a Feed Additive for Livestock, Paper Industry, Raw material for manufacture of quicklime, slaked lime, Soil Conditioner, Used in aquariums, Whiting material in toothpaste, paint and paper

Types

Metamorphic rock

Chalk, Coquina, Fossiliferous Limestone, Lithographic Limestone, Oolitic Limestone, Travertine, Tufa

Features

Has High structural resistance against erosion and climate, Very fine grained rock

Host Rock for Lead, Stalactites and stalagmites are formed from this rock, Zinc and Copper Deposits

Archaeological Significance

Monuments

Famous Monuments

Acropolis of Athens in Greece, Agia Sophia in Istanbul, Turkey, Al Aqsa Mosque in Jerusalem, Angkor Wat in Cambodia, Big Ben in London, Charminar in Hyderabad, India, Chhatrapati Shivaji Terminus in Maharashtra, India, Chichen Itza in Mexico, Empire State Building in New York, Khajuraho Temples, India, Kremlin in Moscow, Louvre in Paris, France, Neuschwanstein in Bavaria, Potala Palace in Lahasa, Tibet, Wailing Wall in Jerusalem

Sculpture

Famous Sculptures

Ajanta Caves in Maharashtra, India, Elephanta Caves in Maharashtra, India

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

Formation

Blueschist forms due to the metamorphism of basalt and other rocks with similar composition at high pressures and low temperatures and approximately corresponding to a depth of 15 to 30 kilometers and 200 to 500 °C.

Limestone is a sedimentary rock which is mainly made up of calcium carbonate.

Composition

Mineral Content

Albite, Chlorite, Epidote, Garnet, Glaucophane, Lawsonite, Muscovite or Illite, Quartz

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

Compound Content

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

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

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Mechanical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion

Properties

Physical Properties

Hardness

3.5-43-4

1 7

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Grain Size

Fine to Medium Grained

Fine Grained

Fracture

Conchoidal

Splintery

Streak

White to Grey

White

Porosity

Highly Porous

Less Porous

Luster

Dull

Dull to Pearly

Compressive Strength

220.00 N/mm²115.00 N/mm²

0.15 450

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Cleavage

Slaty

Toughness

1.5

Specific Gravity

3-3.22.3-2.7

0 8.4

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Transparency

Opaque

Density

2.8-2.9 g/cm³2.3-2.7 g/cm³

0 1400

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Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.91 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Impact Resistant, Pressure Resistant

Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

Japan, Turkey

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

Africa

Egypt, Ethiopia, South Africa

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

Europe

France, Greece, Iceland

United Kingdom

Others

Deposits in Western Continents

North America

USA

South America

Colombia

Deposits in Oceania Continent

Australia

New Zealand

Adelaide, New Zealand, Queensland, Victoria, Yorke Peninsula

All about Blueschist and Limestone Properties

Know all about Blueschist and Limestone properties here. All properties of rocks are important as they define the type of rock and its application. Blueschist belongs to Metamorphic Rocks while Limestone belongs to Sedimentary Rocks.Texture of Blueschist is Foliated whereas that of Limestone is Clastic or Non-Clastic. Blueschist appears Dull and Banded and Limestone appears Rough and Banded. The luster of Blueschist is dull while that of Limestone is dull to pearly. Blueschist is available in blue, bluish - grey, purple, shades of blue colors whereas Limestone is available in beige, black, blue, brown, cream, gold, green, grey, light green, light grey, linen, pink, red, rust, silver, white, yellow colors. The commercial uses of Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones and that of Limestone are animal feed filler, as a feed additive for livestock, paper industry, raw material for manufacture of quicklime, slaked lime, soil conditioner, used in aquariums, whiting material in toothpaste, paint and paper.