Phyllite and Aplite

Phyllite

Aplite

Definition

Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks

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

History

Origin

Unknown

Iran

Discoverer

Unknown

Etymology

From Greek phullon leaf + -ite1

From German Aplit, from Greek haploos simple + -ite

Class

Metamorphic Rocks

Igneous Rocks

Sub-Class

Durable Rock, Soft Rock

Durable Rock, Hard Rock

Family

Group

Not Applicable

Plutonic

Other Categories

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

Fine Grained Rock, Opaque Rock

Texture

Phyllitic Sheen, Slaty

Granular, Graphic

Color

Black to Grey, Light Greenish Grey

Black, Grey, Orange, Pink, White

Maintenance

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Crinkled or Wavy

Veined or Pebbled

Uses

Architecture

Interior Uses

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration

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

Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration

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

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar, Roadstone

As Dimension Stone

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Sculpture

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork, Writing Slates

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

Types

Not Available

Features

Easily splits into thin plates, Is one of the oldest rock, Surfaces are often shiny

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

Archaeological Significance

Monuments

Not Yet Used

Used

Famous Monuments

Not Applicable

Data Not Available

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Used

Not Used

Petroglyphs

Used

Not Used

Figurines

Used

Fossils

Absent

Formation

Phyllite is a metamorphic rock which is formed by regional metamorphism of argillaceous sediments since their cleavage arose due to deviatoric stress.

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.

Composition

Mineral Content

Albite, Alusite, Amphibole, Apatite, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc, Zircon

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

Compound Content

CaO, Carbon Dioxide, MgO

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

Transformation

Metamorphism

Yes

Types of Metamorphism

Not Applicable

Burial Metamorphism, Cataclastic Metamorphism, Hydrothermal Metamorphism, Regional Metamorphism

Weathering

Yes

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Chemical Weathering, Mechanical Weathering

Erosion

Yes

Types of Erosion

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

Chemical Erosion, Coastal Erosion, Wind Erosion

Properties

Physical Properties

Hardness

1-2

6.5

Grain Size

Medium to Fine Coarse Grained

Very fine-grained

Fracture

Conchoidal

Not Available

Streak

White

Porosity

Highly Porous

Less Porous

Luster

Phyllitic

Dull to Pearly to Subvitreous

Compressive Strength

Not Available

130.00 N/mm²

Cleavage

Crenulation and Pervasive

Not Available

Toughness

1.2

Not Available

Specific Gravity

2.72-2.73

2.6

Transparency

Opaque

Density

2.18-3.3 g/cm³

2.6 g/cm³

Thermal Properties

Specific Heat Capacity

Not Available

0.79 kJ/Kg K

Resistance

Heat Resistant, Pressure Resistant, Water Resistant

Heat Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam

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

Africa

Egypt, Ethiopia, Morocco, Nigeria, South Africa

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

Europe

Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland

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

Others

Not Yet Found

Deposits in Western Continents

North America

Canada, Costa Rica, Cuba, Mexico, Panama, USA

Canada, USA

South America

Brazil, Colombia, Guyana

Not Yet Found

Deposits in Oceania Continent

Australia

New South Wales, New Zealand, Queensland

Not Yet Found

Summary >>

<< Reserves

All about Phyllite and Aplite Properties

Know all about Phyllite and Aplite properties here. All properties of rocks are important as they define the type of rock and its application. Phyllite belongs to Metamorphic Rocks while Aplite belongs to Igneous Rocks.Texture of Phyllite is Phyllitic Sheen, Slaty whereas that of Aplite is Granular, Graphic. Phyllite appears Crinkled or Wavy and Aplite appears Veined or Pebbled. The luster of Phyllite is phyllitic while that of Aplite is dull to pearly to subvitreous. Phyllite is available in black to grey, light greenish grey colors whereas Aplite is available in black, grey, orange, pink, white colors. The commercial uses of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates and that of Aplite are curling, gemstone, laboratory bench tops, small sculptures, tombstones.