Granophyre and Icelandite

Granophyre

Icelandite

Definition

Granophyre is a type of granitic rock which consists of intergrown feldspar and quartz crystals in a medium to fine grained groundmass

Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock

History

Origin

Unknown

Iceland

Discoverer

Unknown

Ian S. E. Carmichael

Etymology

From German Granophyr, from Granit granite + Porphyr

From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Volcanic

Other Categories

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Granophyric

Aphanitic to Porphyritic

Color

Black, Grey, Orange, Pink, White

Bluish - Grey, Grey, Pink, Yellow

Maintenance

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Appearance

Veined or Pebbled

Dull and Soft

Uses

Architecture

Interior Uses

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

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration, Kitchens

Exterior Uses

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

Office Buildings, Roof Tiles

Other Architectural Uses

Not Yet Used

Curbing

Industry

Construction Industry

As Dimension Stone

Cobblestones, Construction Aggregate, for Road Aggregate

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Jewellery, Sculpture, Small Figurines

Other Uses

Commercial Uses

Curling, Gemstone, Laboratory bench tops, Tombstones

Cemetery Markers, Creating Artwork

Types

Not Available

Features

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

Generally rough to touch, High silica content, Is one of the oldest rock

Archaeological Significance

Monuments

Used

Not Yet Used

Famous Monuments

Data Not Available

Not Applicable

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Not Used

Petroglyphs

Not Used

Figurines

Used

Fossils

Absent

Formation

Granophyre 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.

Icelandite 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.

Composition

Mineral Content

Hornblade, Orthoclase, Plagioclase, Quartz

Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon

Compound Content

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

Silicon Dioxide

Transformation

Metamorphism

Yes

Types of Metamorphism

Burial Metamorphism, Impact Metamorphism

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

Weathering

Yes

Types of Weathering

Biological Weathering

Erosion

Yes

Types of Erosion

Glacier Erosion, Sea Erosion, Wind Erosion

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

Properties

Physical Properties

Hardness

6-7

Grain Size

Medium to Fine Coarse Grained

Very fine-grained

Fracture

Not Available

Uneven

Streak

White

Porosity

Less Porous

Luster

Dull to Grainy with Sporadic parts Pearly and Vitreous

Vitreous

Compressive Strength

175.00 N/mm²

Not Available

Cleavage

Not Available

Toughness

Not Available

1.1

Specific Gravity

2.6-2.7

2.5-2.8

Transparency

Opaque

Density

2.6-2.8 g/cm³

2.11-2.36 g/cm³

Thermal Properties

Specific Heat Capacity

0.79 kJ/Kg K

2.39 kJ/Kg K

Resistance

Heat Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

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

India, Indonesia, Japan, Nepal, South Korea

Africa

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

Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania

Europe

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

Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom

Others

Not Yet Found

Deposits in Western Continents

North America

Canada, USA

Mexico, USA

South America

Not Yet Found

Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela

Deposits in Oceania Continent

Australia

Not Yet Found

New South Wales, New Zealand, Western Australia

Summary >>

<< Reserves

All about Granophyre and Icelandite Properties

Know all about Granophyre and Icelandite properties here. All properties of rocks are important as they define the type of rock and its application. Granophyre and Icelandite belong to Igneous Rocks.Texture of Granophyre is Granophyric whereas that of Icelandite is Aphanitic to Porphyritic. Granophyre appears Veined or Pebbled and Icelandite appears Dull and Soft. The luster of Granophyre is dull to grainy with sporadic parts pearly and vitreous while that of Icelandite is vitreous. Granophyre is available in black, grey, orange, pink, white colors whereas Icelandite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Granophyre are curling, gemstone, laboratory bench tops, tombstones and that of Icelandite are cemetery markers, creating artwork.