Aplite and Coquina

Aplite

Coquina

Definition

Aplite is a fine-grained granite composed mainly of feldspar and quartz

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

Iran

European Foreland Basins

Discoverer

Unknown

Etymology

From German Aplit, from Greek haploos simple + -ite

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

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Soft Rock

Family

Group

Plutonic

Not Applicable

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Opaque Rock

Texture

Granular, Graphic

Clastic

Color

Black, Grey, Orange, Pink, White

Beige, Buff, Orange

Maintenance

Durability

Durable

Non-Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Veined or Pebbled

Layered, Banded, Veined and Shiny

Uses

Architecture

Interior Uses

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

Decorative Aggregates, Homes, Hotels, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Bridges, Paving Stone, Near Swimming Pools, Office Buildings, Resorts

Garden Decoration, Office Buildings

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone

Building houses or walls, Construction Aggregate

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Curling, Gemstone, Laboratory bench tops, Small Sculptures, Tombstones

Creating Artwork

Types

Not Available

Features

Available in lots of colors, Available in Lots of Colors and Patterns, 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

Not Used

Used

Petroglyphs

Not Used

Used

Figurines

Used

Fossils

Absent

Present

Formation

Aplites belong to intrusive igneous rocks which are mostly quart and alkali feldspar and are formed from residual eutectic granitic liquids and represent the final crystallization products of magma.

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, Biotite, Feldspar, Hornblade, Micas, Muscovite or Illite, Plagioclase, Pyroxene, Quartz

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

Compound Content

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

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

Transformation

Metamorphism

Yes

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Regional Metamorphism

Not Applicable

Weathering

Yes

Types of Weathering

Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

Chemical Erosion, Coastal Erosion, Wind Erosion

Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

6.5

1-2

Grain Size

Very fine-grained

Coarse Grained

Fracture

Not Available

Irregular

Streak

White

Porosity

Less Porous

Highly Porous

Luster

Dull to Pearly to Subvitreous

Dull to Vitreous to Submetallic

Compressive Strength

130.00 N/mm²

Not Available

Cleavage

Not Available

Toughness

Not Available

Specific Gravity

2.6

1.10-2.24

Transparency

Opaque

Density

2.6 g/cm³

2.8-2.9 g/cm³

Thermal Properties

Specific Heat Capacity

0.79 kJ/Kg K

Not Available

Resistance

Heat Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Not Yet Found

Africa

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

Not Yet Found

Europe

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

United Kingdom

Others

Not Yet Found

Deposits in Western Continents

North America

Canada, USA

USA

South America

Not Yet Found

Deposits in Oceania Continent

Australia

Not Yet Found

Summary >>

<< Reserves

All about Aplite and Coquina Properties

Know all about Aplite and Coquina properties here. All properties of rocks are important as they define the type of rock and its application. Aplite belongs to Igneous Rocks while Coquina belongs to Sedimentary Rocks.Texture of Aplite is Granular, Graphic whereas that of Coquina is Clastic. Aplite appears Veined or Pebbled and Coquina appears Layered, Banded, Veined and Shiny. The luster of Aplite is dull to pearly to subvitreous while that of Coquina is dull to vitreous to submetallic. Aplite is available in black, grey, orange, pink, white colors whereas Coquina is available in beige, buff, orange colors. The commercial uses of Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones and that of Coquina are creating artwork.