Blueschist

Pumice

Blueschist and Pumice

Blueschist

Pumice

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1 Definition

1.1 Definition

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

Pumice is a volcanic rock that consists of highly vesicular rough textured volcanic glass, which may or may not contain crystals

1.2 History

1.2.1 Origin

USA

Spain

1.2.2 Discoverer

Edgar Bailey

Unknown

1.3 Etymology

From French schiste, Greek skhistos i.e. split

From Old French pomis, from a Latin dialect variant of pumex

1.4 Class

Metamorphic Rocks

Igneous Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

1.5 Family

1.5.1 Group

Not Applicable

Volcanic

1.6 Other Categories

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Foliated

Vesicular

2.2 Color

Blue, Bluish - Grey, Purple, Shades of Blue

Beige, Colourless, Grey, Light Green, Light Grey, Pink, White, Yellow- grey

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Dull and Banded

Vesicular

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Floor Tiles, Flooring, Homes, Hotels, Kitchens

Decorative Aggregates, Flooring, Homes, Interior Decoration

3.1.2 Exterior Uses

Garden Decoration, Office Buildings

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

3.1.3 Other Architectural Uses

Not Yet Used

Curbing, Powder

3.2 Industry

3.2.1 Construction Industry

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

As Dimension Stone, Cement Manufacture, for Road Aggregate, In landscaping and horticulture, Making natural cement, Production of lightweight concrete blocks

3.2.2 Medical Industry

Not Yet Used

As an abrasive in skin exfoliating products, In Chemical and Pharmaceutical Industry, Medicines and Cosmetics

3.3 Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts

3.4 Other Uses

3.4.1 Commercial Uses

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

As a traction material on snow-covered roads, As an abrasive in pencil erasers, Fine abrasive used for polishing, Manufacture of Soap, Solvents, Dyes, Plastics and Fibres, Used in aquariums

4 Types

4.1 Types

Not Available

Scoria

4.2 Features

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

Host Rock for Lead

4.3 Archaeological Significance

4.3.1 Monuments

Used

Not Yet Used

4.3.2 Famous Monuments

Data Not Available

Not Applicable

4.3.3 Sculpture

Used

Not Yet Used

4.3.4 Famous Sculptures

Data Not Available

Not Applicable

4.3.5 Pictographs

Used

4.3.6 Petroglyphs

Used

4.3.7 Figurines

Used

Not Yet Used

4.4 Fossils

Absent

5 Formation

5.1 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.

Pumice rock forms when the magma cools so quickly that atoms in the melt are not able to arrange themselves into a crystalline structure.

5.2 Composition

5.2.1 Mineral Content

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

Aluminum Oxides, Calcite, Carbonate, Iron Oxides, Silica

5.2.2 Compound Content

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

Al, Aluminium Oxide, CaO, Carbon Dioxide, MgO, Silicon Dioxide

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Not Applicable

Burial Metamorphism, Impact Metamorphism

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Mechanical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

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

6 Properties

6.1 Physical Properties

6.1.1 Hardness

3.5-46

1 7

6.1.2 Grain Size

Fine to Medium Grained

Fine Grained

6.1.3 Fracture

Conchoidal

Planar

6.1.4 Streak

White to Grey

White, Greenish White or Grey

6.1.5 Porosity

Highly Porous

6.1.6 Luster

Dull

Earthy

6.1.7 Compressive Strength

NA51.20 N/mm²

0.15 450

6.1.8 Cleavage

Slaty

Perfect

6.1.9 Toughness

1.5

6.1.10 Specific Gravity

3-3.22.86

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

2.8-2.9 g/cm³0.25-0.3 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NA0.87 kJ/Kg K

0.14 3.2

6.2.2 Resistance

Impact Resistant, Pressure Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

Japan, Turkey

Afghanistan, Indonesia, Japan, Russia

7.1.2 Africa

Egypt, Ethiopia, South Africa

Ethiopia, Kenya, Tanzania

7.1.3 Europe

France, Greece, Iceland

Greece, Hungary, Iceland, Italy, Turkey

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

USA

Bahamas, Barbados, Canada, Costa Rica, Cuba, Jamaica, Mexico, USA

7.2.2 South America

Not Yet Found

Argentina, Chile, Ecuador, Peru

7.3 Deposits in Oceania Continent

7.3.1 Australia

New Zealand

New Zealand, Western Australia

All about Blueschist and Pumice Properties

Know all about Blueschist and Pumice properties here. All properties of rocks are important as they define the type of rock and its application. Blueschist belongs to Metamorphic Rocks while Pumice belongs to Igneous Rocks.Texture of Blueschist is Foliated whereas that of Pumice is Vesicular. Blueschist appears Dull and Banded and Pumice appears Vesicular. The luster of Blueschist is dull while that of Pumice is earthy. Blueschist is available in blue, bluish - grey, purple, shades of blue colors whereas Pumice is available in beige, colourless, grey, light green, light grey, pink, white, yellow- grey colors. The commercial uses of Blueschist are cemetery markers, commemorative tablets, creating artwork, curling, tombstones and that of Pumice are as a traction material on snow-covered roads, as an abrasive in pencil erasers, fine abrasive used for polishing, manufacture of soap, solvents, dyes, plastics and fibres, used in aquariums.