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Tachylite
Tachylite

Phyllite
Phyllite



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Tachylite
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Phyllite

Tachylite vs Phyllite

Definition

Definition

Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt
Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks

History

Origin

Iceland
-

Discoverer

Unknown
Unknown

Etymology

From German Tachylite, from tachy- + Greek lutos soluble, melting
From Greek phullon leaf + -ite1

Class

Igneous Rocks
Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock

Family

Group

Volcanic
-

Other Categories

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

Texture

Texture

Vitreous
Phyllitic Sheen, Slaty

Color

Black, Dark Brown
Black to Grey, Light Greenish Grey

Maintenance

More
More

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Glassy
Crinkled or Wavy

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

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

Medical Industry

-
-

Antiquity Uses

Artifacts
Artifacts, Sculpture

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork
Cemetery Markers, Commemorative Tablets, Creating Artwork, Writing Slates

Types

Types

Volcanic glass
Phyllite

Features

Available in Lots of Colors and Patterns, Clasts are smooth to touch
Easily splits into thin plates, Is one of the oldest rock, Surfaces are often shiny

Archaeological Significance

Monuments

-
-

Famous Monuments

-
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

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

Composition

Mineral Content

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

Compound Content

Fe, Mg
CaO, Carbon Dioxide, MgO

Transformation

Metamorphism

Types of Metamorphism

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

Weathering

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

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

Properties

Physical Properties

Hardness

5.51-2
1 7
👆🏻

Grain Size

Medium to Fine Coarse Grained
Medium to Fine Coarse Grained

Fracture

Conchoidal
Conchoidal

Streak

Vermilion
White

Porosity

Less Porous
Highly Porous

Luster

Resinous
Phyllitic

Compressive Strength

206.00 N/mm250.00 N/mm2
0.15 450
👆🏻

Cleavage

-
Crenulation and Pervasive

Toughness

-
1.2

Specific Gravity

2.42.72-2.73
0 8.4
👆🏻

Transparency

Opaque
Opaque

Density

3.058 g/cm32.18-3.3 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.56 kJ/Kg K0.79 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Impact Resistant, Wear Resistant
Heat Resistant, Pressure Resistant, Water Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Africa

East Africa
Egypt, Ethiopia, Morocco, Nigeria, South Africa

Europe

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

Others

Hawaii Islands
-

Deposits in Western Continents

North America

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

South America

-
Brazil, Colombia, Guyana

Deposits in Oceania Continent

Australia

Victoria
New South Wales, New Zealand, Queensland

Tachylite vs Phyllite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Tachylite and Phyllite Reserves. Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt. Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Tachylite vs Phyllite information and Tachylite vs Phyllite characteristics in the upcoming sections.

Tachylite vs Phyllite Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Tachylite vs Phyllite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Tachylite and Properties of Phyllite. Learn more about Tachylite vs Phyllite in the next section. The interior uses of Tachylite include Decorative aggregates and Interior decoration whereas the interior uses of Phyllite include Decorative aggregates, Floor tiles, Homes and Interior decoration. Due to some exceptional properties of Tachylite and Phyllite, they have various applications in construction industry. The uses of Tachylite in construction industry include Cutting tool, Knives, Landscaping, Scrapers and that of Phyllite include As dimension stone, Building houses or walls, Cement manufacture, Construction aggregate, For road aggregate, Raw material for the manufacture of mortar, Roadstone.

More about Tachylite and Phyllite

Here you can know more about Tachylite and Phyllite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Tachylite and Phyllite consists of mineral content and compound content. The mineral content of Tachylite includes Feldspar, Olivine and mineral content of Phyllite includes Albite, Alusite, Amphibole, Apatite, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc, Zircon. You can also check out the list of all Igneous Rocks. When we have to compare Tachylite vs Phyllite, the texture, color and appearance plays an important role in determining the type of rock. Tachylite is available in black, dark brown colors whereas, Phyllite is available in black to grey, light greenish grey colors. Appearance of Tachylite is Glassy and that of Phyllite is Crinkled or Wavy. Properties of rock is another aspect for Tachylite vs Phyllite. The hardness of Tachylite is 5.5 and that of Phyllite is 1-2. The types of Tachylite are Volcanic glass whereas types of Phyllite are Phyllite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Tachylite is vermilion while that of Phyllite is white. The specific heat capacity of Tachylite is 0.56 kJ/Kg K and that of Phyllite is 0.79 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Tachylite is heat resistant, impact resistant, wear resistant whereas Phyllite is heat resistant, pressure resistant, water resistant.