Theralite and Rapakivi Granite

Theralite

Definition

Theralite is a plutonic hylocrystalline igneous rock consisting of augite, olivine, calcic plagioclase and nepheline

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

History

Origin

Unknown

Finland, Europe

Discoverer

Unknown

Jakob Sederholm

Etymology

From Greek to pursue

From Finnish Rapakivi which stands for crumbly rock

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Plutonic

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Opaque Rock

Texture

Phaneritic

Granular, Phaneritic

Color

Dark Grey to Black

Black, Grey, Orange, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Veined and Shiny

Veined or Pebbled

Uses

Architecture

Interior Uses

Decorative Aggregates, Flooring, Interior Decoration

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

Exterior Uses

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

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

Other Architectural Uses

Curbing

Not Yet Used

Industry

Construction Industry

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

As Dimension Stone

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork, Laboratory bench tops, Jewelry, Sea Defence, Tombstones

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

Types

Teschenite and Essexite

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

Features

Smooth to touch

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

Theralite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

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

Composition

Mineral Content

Augite, Olivine, Plagioclase, Pyroxene

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

Compound Content

Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide

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

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

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering

Yes

Types of Weathering

Biological Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

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

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

6-7

Grain Size

Fine Grained

Large and Coarse Grained

Fracture

Uneven, Splintery or Conchoidal

Not Available

Streak

White

Porosity

Highly Porous

Less Porous

Luster

Waxy and Dull

Dull to Grainy with Sporadic parts Pearly and Vitreous

Compressive Strength

Not Available

175.00 N/mm²

Cleavage

Non-Existent

Not Available

Toughness

1.5

Not Available

Specific Gravity

2.5-2.8

2.6-2.7

Transparency

Translucent to Opaque

Opaque

Density

2.7 g/cm³

2.6-2.8 g/cm³

Thermal Properties

Specific Heat Capacity

0.74 kJ/Kg K

0.79 kJ/Kg K

Resistance

Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Russia

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

Africa

South Africa

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

Europe

Germany, Greece, Italy, Scotland, Turkey

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

Others

Greenland, Mid-Atlantic Ridge

Not Yet Found

Deposits in Western Continents

North America

Canada, USA

South America

Bolivia, Brazil, Colombia, Venezuela

Not Yet Found

Deposits in Oceania Continent

Australia

New Zealand, Queensland

Not Yet Found

Summary >>

<< Reserves

All about Theralite and Rapakivi Granite Properties

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