Granophyre and Arkose

Granophyre

Arkose

Definition

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

Arkose is a sedimentary rock, specifically a type of sandstone containing at least 25% feldspar

History

Origin

Unknown

France

Discoverer

Unknown

Alexandre Brongniart

Etymology

From German Granophyr, from Granit granite + Porphyr

From Auvergne region of France used by a French geologist Alexandre Brongniart in 1826 who applied this term to some feldspathic sandstones

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Volcanic

Not Applicable

Other Categories

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

Coarse Grained Rock, Opaque Rock

Texture

Granophyric

Clastic

Color

Black, Grey, Orange, Pink, White

Reddish Brown

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Veined or Pebbled

Rough and Dull

Uses

Architecture

Interior Uses

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

Decorative Aggregates, Homes, Interior Decoration

Exterior Uses

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

Paving Stone, Office Buildings

Other Architectural Uses

Not Yet Used

Whetstones

Industry

Construction Industry

As Dimension Stone

Cement Manufacture, Construction Aggregate, for Road Aggregate, Production of Glass and Ceramics, Raw material for the manufacture of mortar

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Sculpture, Small Figurines

Other Uses

Commercial Uses

Curling, Gemstone, Laboratory bench tops, Tombstones

In aquifers, Soil Conditioner, Source of Magnesia (MgO), Tombstones

Types

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 and Patterns, Generally rough to touch, 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

Present

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.

Arkose rock forms from the weathering of feldspar-rich igneous or metamorphic rock, most commonly granitic rocks, which are primarily composed of quartz and feldspar.

Composition

Mineral Content

Hornblade, Orthoclase, Plagioclase, Quartz

Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz

Compound Content

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

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

Transformation

Metamorphism

Yes

Types of Metamorphism

Burial Metamorphism, Impact Metamorphism

Not Applicable

Weathering

Yes

Types of Weathering

Biological Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

Glacier Erosion, Sea Erosion, Wind Erosion

Coastal Erosion, Glacier Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

6-7

Grain Size

Medium to Fine Coarse Grained

Coarse Grained

Fracture

Not Available

Conchoidal

Streak

White

Porosity

Less Porous

Highly Porous

Luster

Dull to Grainy with Sporadic parts Pearly and Vitreous

Dull

Compressive Strength

175.00 N/mm²

Not Available

Cleavage

Not Available

Toughness

Not Available

Specific Gravity

2.6-2.7

Transparency

Opaque

Density

2.6-2.8 g/cm³

Not Available

Thermal Properties

Specific Heat Capacity

0.79 kJ/Kg K

Not Available

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

China, India, Kazakhstan, Mongolia, Russia, Uzbekistan

Africa

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

Namibia, Nigeria, South Africa

Europe

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

Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom

Others

Not Yet Found

Greenland

Deposits in Western Continents

North America

Canada, USA

South America

Not Yet Found

Brazil

Deposits in Oceania Continent

Australia

Not Yet Found

New South Wales, New Zealand

Summary >>

<< Reserves

All about Granophyre and Arkose Properties

Know all about Granophyre and Arkose properties here. All properties of rocks are important as they define the type of rock and its application. Granophyre belongs to Igneous Rocks while Arkose belongs to Sedimentary Rocks.Texture of Granophyre is Granophyric whereas that of Arkose is Clastic. Granophyre appears Veined or Pebbled and Arkose appears Rough and Dull. The luster of Granophyre is dull to grainy with sporadic parts pearly and vitreous while that of Arkose is dull. Granophyre is available in black, grey, orange, pink, white colors whereas Arkose is available in reddish brown colors. The commercial uses of Granophyre are curling, gemstone, laboratory bench tops, tombstones and that of Arkose are in aquifers, soil conditioner, source of magnesia (mgo), tombstones.