Phyllite

Cataclasite

Phyllite and Cataclasite

Phyllite

Cataclasite

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Definition

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

Cataclasite is a type of cataclastic rock that is formed by fracturing and comminution during faulting. It is normally cohesive and non-foliated, consisting of angular clasts in a finer-grained matrix

History

Origin

Swiss Alps, Europe

Discoverer

Unknown

Michael Tellinger

Etymology

From Greek phullon leaf + -ite1

From the Italian word cataclasi

Class

Metamorphic Rocks

Sub-Class

Durable Rock, Soft Rock

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

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

Fine Grained Rock, Opaque Rock

Texture

Phyllitic Sheen, Slaty

Clastic

Color

Black to Grey, Light Greenish Grey

Brown, Green, White, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Crinkled or Wavy

Dull and Banded

Uses

Architecture

Interior Uses

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration

Decorative Aggregates, Homes

Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration

As Building Stone, As Facing Stone, Paving Stone

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, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate

Medical Industry

Antiquity Uses

Artifacts, Sculpture

Artifacts

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork, Writing Slates

Commemorative Tablets, Creating Artwork

Types

Phyllite

Protocataclasite, Mesocataclasite, Ultracataclasite and Foliated cataclasite

Features

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

Easily splits into thin plates, Is one of the oldest rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

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.

Cataclasiste rocks mainly form by pressure deep under the Earth's surface, from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.

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

Albite, Apatite, Augite, Biotite, Calcite, Enstatite, Epidote, Feldspar, Micas, Muscovite or Illite, Pyroxene, Quartz

Compound Content

CaO, Carbon Dioxide, MgO

Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

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

Coastal Erosion, Wind Erosion

Properties

Physical Properties

Hardness

1-23-4

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Fine Grained

Fracture

Conchoidal

Streak

White

Black

Porosity

Highly Porous

Less Porous

Luster

Phyllitic

Vitreous

Compressive Strength

50.00 N/mm²50.00 N/mm²

0.15 450

👆🏻

Cleavage

Crenulation and Pervasive

Toughness

1.2

Specific Gravity

2.72-2.732.1

0 8.4

👆🏻

Transparency

Opaque

Translucent to Opaque

Density

2.18-3.3 g/cm³2.9-3.1 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.79 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Pressure Resistant, Water Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

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

China, India, Russia, Saudi Arabia, South Korea

Africa

Egypt, Ethiopia, Morocco, Nigeria, South Africa

Egypt, Ethiopia, Kenya, Madagascar, Morocco, South Africa

Europe

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

England, Finland, France, Spain, United Kingdom

Others

Deposits in Western Continents

North America

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

Canada, USA

South America

Brazil, Colombia, Guyana

Argentina, Colombia

Deposits in Oceania Continent

Australia

New South Wales, New Zealand, Queensland

Central Australia, Western Australia

All about Phyllite and Cataclasite Properties

Know all about Phyllite and Cataclasite properties here. All properties of rocks are important as they define the type of rock and its application. Phyllite and Cataclasite belong to Metamorphic Rocks.Texture of Phyllite is Phyllitic Sheen, Slaty whereas that of Cataclasite is Clastic. Phyllite appears Crinkled or Wavy and Cataclasite appears Dull and Banded. The luster of Phyllite is phyllitic while that of Cataclasite is vitreous. Phyllite is available in black to grey, light greenish grey colors whereas Cataclasite is available in brown, green, white, yellow colors. The commercial uses of Phyllite and Cataclasite are cemetery markers, commemorative tablets, creating artwork, writing slates.