Peridotite and Rhyodacite

Peridotite

Rhyodacite

Rhyodacite and Peridotite

Definition

Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle

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

History

Origin

Pike County, U.S

USA

Discoverer

Unknown

Etymology

From French, from peridot +‎ -ite

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

Class

Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Plutonic

Volcanic

Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Phaneritic

Earthy

Color

Dark Greenish - Grey

Black to Grey, Dark Greenish - Grey

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Rough and Shiny

Skeletal

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration

As Building Stone, Garden Decoration

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Cobblestones

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

Medical Industry

Not Yet Used

Antiquity Uses

Monuments, Sculpture, Small Figurines

Artifacts

Other Uses

Commercial Uses

Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds

Cemetery Markers, Creating Artwork

Types

Dunite, Wehrlite, Harzburgite, Lherzolite and Pyrolite

Not Available

Features

Constitutes upper part of the Earth's mantle, Generally rough to touch, Host rock for Diamond, Is one of the oldest 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

Used

Petroglyphs

Used

Figurines

Used

Not Yet Used

Fossils

Absent

Formation

Peridotites can be formed in two ways: as mantle rocks formed during the accretion and differentiation of the Earth or as cumulate rocks formed by precipitation of olivine and pyroxenes from basaltic magmas.

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

Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene

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

Compound Content

Ca, Fe, Mg, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide

Ca, Fe, Potassium Oxide, NA, Potassium, Silicon Dioxide

Transformation

Metamorphism

Yes

Types of Metamorphism

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

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

Chemical Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

5.5-6

Grain Size

Coarse Grained

Fine Grained

Fracture

Irregular

Conchoidal

Streak

White

Black

Porosity

Less Porous

Luster

Shiny

Greasy to Dull

Compressive Strength

107.55 N/mm²

200.50 N/mm²

Cleavage

Imperfect

Not Available

Toughness

2.1

Specific Gravity

3-3.01

2.34-2.40

Transparency

Translucent to Opaque

Opaque

Density

3.1-3.4 g/cm³

Not Available

Thermal Properties

Specific Heat Capacity

1.26 kJ/Kg K

1.12 kJ/Kg K

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Indonesia, Kazakhstan, Russia, South Korea, Thailand, Turkey

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

Africa

Morocco, South Africa

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

Europe

Finland, France, Georgia, Germany, Great Britain, Italy, Kazakhstan, Netherlands, Norway, Spain, Switzerland, 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

Brazil

Not Yet Found

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

Not Yet Found

Summary >>

<< Reserves

All about Peridotite and Rhyodacite Properties

Know all about Peridotite and Rhyodacite properties here. All properties of rocks are important as they define the type of rock and its application. Peridotite and Rhyodacite belong to Igneous Rocks.Texture of Peridotite is Phaneritic whereas that of Rhyodacite is Earthy. Peridotite appears Rough and Shiny and Rhyodacite appears Skeletal. The luster of Peridotite is shiny while that of Rhyodacite is greasy to dull. Peridotite is available in dark greenish - grey colors whereas Rhyodacite is available in black to grey, dark greenish - grey colors. The commercial uses of Peridotite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds and that of Rhyodacite are cemetery markers, creating artwork.