Pyrolite and Coquina

Pyrolite

Coquina

Definition

Pyrolite is an igneous rock consisting of about three parts of peridotite and one part of basalt

Coquina is a sedimentary rock that is composed either wholly or almost entirely of the transported, abraded, and mechanically-sorted fragments of the shells of molluscs, trilobites, brachiopods, or other invertebrates

History

Origin

Pike County, U.S

European Foreland Basins

Discoverer

Unknown

Etymology

From the chemical and mineralogical composition of the upper mantle of the Earth

From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century)

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Soft Rock

Family

Group

Plutonic

Not Applicable

Other Categories

Coarse Grained Rock, Opaque Rock

Texture

Phaneritic

Clastic

Color

Dark Greenish - Grey

Beige, Buff, Orange

Maintenance

Less

Durability

Durable

Non-Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Wind Resistant

Acid Resistant

Yes

Appearance

Rough and Shiny

Layered, Banded, Veined and Shiny

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Homes, Hotels, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration, Paving Stone

Garden Decoration, Office Buildings

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Cobblestones

Building houses or walls, Construction Aggregate

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

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

Creating Artwork

Types

Dunite, Wehrlite, Harzburgite, Lherzolite

Not Available

Features

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

Available in Lots of Colors and Patterns, Is one of the oldest rock

Archaeological Significance

Monuments

Used

Famous Monuments

Data Not Available

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Used

Petroglyphs

Used

Figurines

Used

Fossils

Absent

Present

Formation

Pyrolite 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.

Coquina is a sedimentary rock which is formed when billions of small clam-like seashell, called Coquina, or cockleshell are die and hence are deposited, buried and turns into a rock when pressure is applied.

Composition

Mineral Content

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

Apatite, Augite, Bronzite, Calcite, Chert, Chlorite, Clay Minerals, Epidote, Feldspar, Garnet, Micas, Muscovite or Illite

Compound Content

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

CaO, Carbon Dioxide, Iron(III) Oxide, MgO

Transformation

Metamorphism

Yes

Types of Metamorphism

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

Not Applicable

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

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

Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

5.5-6

1-2

Grain Size

Coarse Grained

Fracture

Irregular

Streak

White

Porosity

Less Porous

Highly Porous

Luster

Shiny

Dull to Vitreous to Submetallic

Compressive Strength

107.55 N/mm²

Not Available

Cleavage

Imperfect

Not Available

Toughness

2.1

Not Available

Specific Gravity

3-3.01

1.10-2.24

Transparency

Translucent to Opaque

Opaque

Density

3.1-3.4 g/cm³

2.8-2.9 g/cm³

Thermal Properties

Specific Heat Capacity

1.25 kJ/Kg K

Not Available

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Not Yet Found

Africa

Morocco, South Africa

Not Yet Found

Europe

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

United Kingdom

Others

Not Yet Found

Deposits in Western Continents

North America

Canada, USA

USA

South America

Brazil

Not Yet Found

Deposits in Oceania Continent

Australia

New Zealand, Western Australia

Not Yet Found

Summary >>

<< Reserves

All about Pyrolite and Coquina Properties

Know all about Pyrolite and Coquina properties here. All properties of rocks are important as they define the type of rock and its application. Pyrolite belongs to Igneous Rocks while Coquina belongs to Sedimentary Rocks.Texture of Pyrolite is Phaneritic whereas that of Coquina is Clastic. Pyrolite appears Rough and Shiny and Coquina appears Layered, Banded, Veined and Shiny. The luster of Pyrolite is shiny while that of Coquina is dull to vitreous to submetallic. Pyrolite is available in dark greenish - grey colors whereas Coquina is available in beige, buff, orange colors. The commercial uses of Pyrolite and Coquina are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds.