Rapakivi Granite and Blue Granite

Blue Granite

Definition

Rapakivi Granite is a hornblende-biotite Granite containing large rounded crystals of orthoclase which are mantled with oligoclase

Blue Granite is an igneous rock and a variety of Larvikite, notable for the presence of thumbnail-sized blue crystals of feldspar

History

Origin

Finland, Europe

Unknown

Discoverer

Jakob Sederholm

Unknown

Etymology

From Finnish Rapakivi which stands for crumbly rock

From the color of rock, Blue

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

Family

Group

Plutonic

Volcanic

Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Granular, Phaneritic

Phaneritic

Color

Black, Grey, Orange, Pink, White

Black, Brown, Light to Dark Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Veined or Pebbled

Shiny

Uses

Architecture

Interior Uses

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

Decorative Aggregates, Floor Tiles, Flooring, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Office Buildings, Paving Stone, Resorts

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

Other Architectural Uses

Not Yet Used

Curbing

Industry

Construction Industry

As Dimension Stone

As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling, Laboratory bench tops, Tombstones

Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling

Types

Igneous Protolith Granite, Sedimentary Protolith Granite, Mantle Granite, Anorogenic Granite and Hybrid Granite

Not Available

Features

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

Available in lots of colors, Is one of the oldest rock

Archaeological Significance

Monuments

Used

Famous Monuments

Data Not Available

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Not Used

Petroglyphs

Not Used

Figurines

Used

Fossils

Absent

Formation

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

Blue Granite is an igneous rock which is a variety of Larvikite and is known mainly for the presence of thumbnail-sized crystals of feldspar.

Composition

Mineral Content

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

Albite, Amphibole, Apatite, Biotite, Feldspar, Hornblade, Ilmenite, Magnetite, Muscovite or Illite, Olivine, Plagioclase, Pyroxene, Quartz, Sulfides, Titanite, Zircon

Compound Content

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

Burial Metamorphism, Cataclastic Metamorphism

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering

Erosion

Yes

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Water Erosion

Properties

Physical Properties

Hardness

6-7

Grain Size

Large and Coarse Grained

Medium to Fine Coarse Grained

Fracture

Not Available

Streak

White

Porosity

Less Porous

Luster

Dull to Grainy with Sporadic parts Pearly and Vitreous

Subvitreous to Dull

Compressive Strength

175.00 N/mm²

Cleavage

Not Available

Toughness

Not Available

Specific Gravity

2.6-2.7

2.8-3

Transparency

Opaque

Density

2.6-2.8 g/cm³

2.9-2.91 g/cm³

Thermal Properties

Specific Heat Capacity

0.79 kJ/Kg K

Resistance

Heat Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Not Yet Found

Africa

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

Not Yet Found

Europe

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

Bulgaria, England, Germany, Norway, Romania, Switzerland

Others

Not Yet Found

Deposits in Western Continents

North America

Canada, USA

USA

South America

Not Yet Found

Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru

Deposits in Oceania Continent

Australia

Not Yet Found

New South Wales, New Zealand, Queensland, South Australia, Western Australia

Summary >>

<< Reserves

All about Rapakivi Granite and Blue Granite Properties

Know all about Rapakivi Granite and Blue Granite properties here. All properties of rocks are important as they define the type of rock and its application. Rapakivi Granite and Blue Granite belong to Igneous Rocks.Texture of Rapakivi Granite is Granular, Phaneritic whereas that of Blue Granite is Phaneritic. Rapakivi Granite appears Veined or Pebbled and Blue Granite appears Shiny. The luster of Rapakivi Granite is dull to grainy with sporadic parts pearly and vitreous while that of Blue Granite is subvitreous to dull. Rapakivi Granite is available in black, grey, orange, pink, white colors whereas Blue Granite is available in black, brown, light to dark grey, white colors. The commercial uses of Rapakivi Granite and Blue Granite are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, tombstones.