Travertine

Mylonite

Travertine and Mylonite

Travertine

Mylonite

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Definition

Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters

Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism

History

Origin

Italy

New Zealand

Discoverer

Marcus Vitruvius Pollio

Unknown

Etymology

From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy

From Greek mulōn mill + -ite

Class

Sedimentary Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Banded

Foliated

Color

Beige, Black, Blue, Brown, Grey, Red, White, Yellow

Black to Grey

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Fibrous

Dull, Banded and Foilated

Uses

Architecture

Interior Uses

Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration

Decorative Aggregates, Interior Decoration

Exterior Uses

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

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

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

for Road Aggregate, Landscaping, Roadstone

Medical Industry

Antiquity Uses

Artifacts, Jewellery, Monuments, Sculpture, Small Figurines

Artifacts, Monuments

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork, Gemstone, Jewelry, Paper Industry, Pottery

Creating Artwork, Gemstone, Jewelry

Types

Thermal Travertine and Tufa

Blastomylonites, Ultramylonites and Phyllonites

Features

Stalactites and stalagmites are formed from this rock, Surfaces are often shiny, Very fine grained rock

Surfaces are often shiny

Archaeological Significance

Monuments

Famous Monuments

Colosseum in Rome, Italy, Sacré Coeur in Paris, France, Trevi Fountain in Rome, Italy

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

Absent

Formation

Travertine is a type of sedimentary rock formed when a river carries or transports pieces of broken rock which then undergo sedimentation. They are then subjected to high temperature and pressure hence forming travertine rock.

Mylonites are ductilely deformed rocks formed by the accumulation of large shear strain, in ductile fault zones.

Composition

Mineral Content

Calcite, Clay, Feldspar, Micas, Quartz

Porphyroblasts

Compound Content

Ca, NaCl, CaO, Oxygen

Aluminium Oxide, Calcium Sulfate, Chromium(III) Oxide, Iron(III) Oxide, Magnesium Carbonate, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Chemical Erosion, Sea Erosion, Wind Erosion

Properties

Physical Properties

Hardness

3-43-4

1 7

👆🏻

Grain Size

Fine Grained

Fracture

Splintery

Conchoidal

Streak

White

Porosity

Highly Porous

Luster

Dull to Pearly

Shiny

Compressive Strength

80.00 N/mm²1.28 N/mm²

0.15 450

👆🏻

Cleavage

Conchoidal

Toughness

Specific Gravity

1.682.97-3.05

0 8.4

👆🏻

Transparency

Opaque

Density

2.71 g/cm³2.6-4.8 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

1.09 kJ/Kg K1.50 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant

Reserves

Deposits in Eastern Continents

Asia

China, Russia

China, India, Indonesia, Saudi Arabia, South Korea

Africa

Eritrea, Ethiopia, Ghana, South Africa, Western Africa

Europe

Austria, Italy, Portugal, United Kingdom

England, Finland, France, Germany, Great Britain, Greece, United Kingdom

Others

Deposits in Western Continents

North America

Canada, USA

USA

South America

Argentina, Bolivia, Ecuador

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

All about Travertine and Mylonite Properties

Know all about Travertine and Mylonite properties here. All properties of rocks are important as they define the type of rock and its application. Travertine belongs to Sedimentary Rocks while Mylonite belongs to Metamorphic Rocks.Texture of Travertine is Banded whereas that of Mylonite is Foliated. Travertine appears Fibrous and Mylonite appears Dull, Banded and Foilated. The luster of Travertine is dull to pearly while that of Mylonite is shiny. Travertine is available in beige, black, blue, brown, grey, red, white, yellow colors whereas Mylonite is available in black to grey colors. The commercial uses of Travertine and Mylonite are cemetery markers, creating artwork, gemstone, jewelry, paper industry, pottery.