Pegmatite and Granite

Pegmatite

Granite

Definition

Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals

Granite is a very hard, granular, crystalline igneous rock which consists mainly of quartz, mica, and feldspar and is often used as building stone

History

Discoverer

R. J. Hauy

Unknown

Etymology

From Greek pegma, pegmat which means- thing joined together + -ite

From Italian granito, which means grained rock, from grano grain, and from Latin granum

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Plutonic

Other Categories

Coarse Grained Rock, Opaque Rock

Texture

Pegmatitic

Granular, Phaneritic

Color

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

Black, Grey, Orange, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Appearance

Layered, Banded, Veined and Shiny

Veined or Pebbled

Uses

Architecture

Interior Uses

Decorative Aggregates, Flooring, Interior Decoration

Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Interior Decoration, Kitchens, Stair Treads

Exterior Uses

As Building Stone, As Facing Stone, Paving Stone

As Building Stone, As Facing Stone, Bridges, Paving Stone, Garden Decoration, Near Swimming Pools, Office Buildings, Resorts

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Building houses or walls, Construction Aggregate, for Road Aggregate, Landscaping

As Dimension Stone

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Sculpture, Small Figurines

Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Creating Artwork, Jewelry, Source of corundum, tourmalines, beryls and topaz

Curling, Gemstone, Laboratory bench tops, Tombstones, Used in aquariums

Types

Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite

Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite, Hybrid Granite, Granodiorite and Alkali Feldspar Granite

Features

Generally rough to touch, Is one of the oldest rock, Source of corundum, tourmalines, beryls and topaz

Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock

Archaeological Significance

Monuments

Not Yet Used

Used

Famous Monuments

Not Applicable

Agia Sophia in Istanbul, Turkey, Blue Domed Church in Santorini, Greece, Blue Mosque in Istanbul, Charminar in Hyderabad, India, Diana, Princess of Wales Memorial Fountain in London, UK, Ephesus in Turkey, Georgia Guidestones in Georgia, US, Hermitage in Saint Petersburg, Khajuraho Temples, India, Mahabalipuram in Tamil Nadu, India, Mysore Palace in Karnataka, India, Signers Monument in Augusta, Georgia, Statue of Liberty in New York, USA, Taj Mahal in Agra, India, Tower Bridge in London, Vietnam Veterans Memorial in Washington, US, Washington Monument, US

Sculpture

Used

Famous Sculptures

Data Not Available

Avukana Buddha Statue in Sri Lanka, Lincoln Memorial in America, Mount Rushmore National Memorial in South Dakota, US, The Colossal Red Granite Statue of Amenhotep III in Karnak, Egypt

Pictographs

Not Used

Petroglyphs

Not Used

Figurines

Used

Fossils

Absent

Formation

Pegmatite rock is holocrystalline, intrusive igneous rock which is formed by partial melting and dewatering during the process of metamorphism.

Granite is an intrusive igneous rock which is very hard, crystalline and is visibly homogeneous in texture and forms by melting of continental rocks

Composition

Mineral Content

Apatite, Beryl, Feldspar, Fluorite, Garnet, Lepidolite, Quartz, Silica, Spodumene, Topaz

Amphibole, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz

Compound Content

Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, Phosphorus Pentoxide

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

Transformation

Metamorphism

Yes

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering

Erosion

Yes

Types of Erosion

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

Chemical Erosion, Sea Erosion, Water Erosion

Properties

Physical Properties

Hardness

6-7

Grain Size

Medium to Coarse Grained

Large and Coarse Grained

Fracture

Conchoidal

Not Available

Streak

White

Porosity

Less Porous

Luster

Grainy, Pearly and Vitreous

Dull to Grainy with Sporadic parts Pearly and Vitreous

Compressive Strength

178.54 N/mm²

175.00 N/mm²

Cleavage

Perfect

Not Available

Toughness

2.1

Not Available

Specific Gravity

2.6-2.63

2.6-2.7

Transparency

Translucent to Opaque

Opaque

Density

2.6-2.65 g/cm³

2.65-2.75 g/cm³

Thermal Properties

Specific Heat Capacity

Not Available

0.79 kJ/Kg K

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant

Heat Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Iran, Japan, Nepal, North Korea, Russia, Saudi Arabia, South Korea

China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam

Africa

South Africa

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

Europe

Austria, France, Greece, Ireland, Italy, Netherlands, Slovakia, Spain, Turkey, Ukraine

Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela

Others

Not Yet Found

Deposits in Western Continents

North America

Canada

Canada, USA

South America

Brazil

Not Yet Found

Deposits in Oceania Continent

Australia

New South Wales, Queensland, South Australia, Western Australia

Not Yet Found

Summary >>

<< Reserves

All about Pegmatite and Granite Properties

Know all about Pegmatite and Granite properties here. All properties of rocks are important as they define the type of rock and its application. Pegmatite and Granite belong to Igneous Rocks.Texture of Pegmatite is Pegmatitic whereas that of Granite is Granular, Phaneritic. Pegmatite appears Layered, Banded, Veined and Shiny and Granite appears Veined or Pebbled. The luster of Pegmatite is grainy, pearly and vitreous while that of Granite is dull to grainy with sporadic parts pearly and vitreous. Pegmatite is available in black, brown, cream, green, grey, pink, red, rust, silver, white, yellow colors whereas Granite is available in black, grey, orange, pink, white colors. The commercial uses of Pegmatite are creating artwork, jewelry, source of corundum, tourmalines, beryls and topaz and that of Granite are curling, gemstone, laboratory bench tops, tombstones, used in aquariums.