Granophyre and Rhyodacite

Granophyre

Rhyodacite

Definition

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

Rhyodacite is an extrusive volcanic rock intermediate in composition between dacite and rhyolite

History

Origin

Unknown

USA

Discoverer

Unknown

Etymology

From German Granophyr, from Granit granite + Porphyr

Rhyo lite + dacite : a rock intermediate between rhyolite and dacite that is the extrusive equivalent of granodiorite

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Other Categories

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

Fine Grained Rock, Opaque Rock

Texture

Granophyric

Earthy

Color

Black, Grey, Orange, Pink, White

Black to Grey, Dark Greenish - Grey

Maintenance

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Appearance

Veined or Pebbled

Skeletal

Uses

Architecture

Interior Uses

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

Decorative Aggregates, Interior Decoration

Exterior Uses

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

As Building Stone, Garden Decoration

Other Architectural Uses

Not Yet Used

Curbing

Industry

Construction Industry

As Dimension Stone

As Dimension Stone, Construction Aggregate, for Road Aggregate, Landscaping

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts

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

Available in Lots of Colors and Patterns

Archaeological Significance

Monuments

Used

Not Yet Used

Famous Monuments

Data Not Available

Not Applicable

Sculpture

Used

Not Yet Used

Famous Sculptures

Data Not Available

Not Applicable

Pictographs

Not Used

Used

Petroglyphs

Not Used

Used

Figurines

Used

Not Yet 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.

Rhyodacite 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, 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

Ca, Fe, Potassium Oxide, NA, Potassium, 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

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

Glacier Erosion, Sea Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

6-7

5.5-6

Grain Size

Medium to Fine Coarse Grained

Fine Grained

Fracture

Not Available

Conchoidal

Streak

White

Black

Porosity

Less Porous

Luster

Dull to Grainy with Sporadic parts Pearly and Vitreous

Greasy to Dull

Compressive Strength

175.00 N/mm²

200.50 N/mm²

Cleavage

Not Available

Toughness

Not Available

2.1

Specific Gravity

2.6-2.7

2.34-2.40

Transparency

Opaque

Density

2.6-2.8 g/cm³

Not Available

Thermal Properties

Specific Heat Capacity

0.79 kJ/Kg K

1.12 kJ/Kg K

Resistance

Heat Resistant, Wear Resistant

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Africa

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

Europe

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

Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland

Others

Not Yet Found

Deposits in Western Continents

North America

Canada, USA

South America

Not Yet Found

Deposits in Oceania Continent

Australia

Not Yet Found

Summary >>

<< Reserves

All about Granophyre and Rhyodacite Properties

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