Travertine

Trachyandesite

Travertine and Trachyandesite

Travertine

Trachyandesite

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Definition

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

Trachyandesite is an extrusive igneous rock.

History

Origin

Italy

Indonesia

Discoverer

Marcus Vitruvius Pollio

Unknown

Etymology

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

From French trachyandésite, trachy + andésite andesite, a lava intermediate in composition between trachyte and andesite

Class

Sedimentary Rocks

Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Banded

Glassy, Massive, Porphyritic, Scoriaceous, Vesicular

Color

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

Black, Brown, Light to Dark Grey

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Fibrous

Dull and Soft

Uses

Architecture

Interior Uses

Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration

Countertops, Decorative Aggregates, Homes, Interior Decoration

Exterior Uses

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

As Building Stone, As Facing 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

Building houses or walls, Cobblestones, for Road Aggregate, Rail Track Ballast, Roadstone

Medical Industry

Antiquity Uses

Artifacts, Jewellery, Monuments, Sculpture, Small Figurines

Artifacts, Sculpture

Other Uses

Commercial Uses

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

Creating Artwork, Pottery

Types

Thermal Travertine and Tufa

Basaltic Trachyandesite

Features

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

Has High structural resistance against erosion and climate, Very fine grained rock

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.

Trachyandesite 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.

Composition

Mineral Content

Calcite, Clay, Feldspar, Micas, Quartz

Alkali feldspar, Biotite, Olivine, Plagioclase, Pyroxene, Sodic plagioclase

Compound Content

Ca, NaCl, CaO, Oxygen

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

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

3-44-5

1 7

👆🏻

Grain Size

Fine Grained

Fracture

Splintery

Conchoidal

Streak

White

Light to dark brown

Porosity

Highly Porous

Less Porous

Luster

Dull to Pearly

Earthy

Compressive Strength

80.00 N/mm²37.40 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

2.3

Specific Gravity

1.682.8-3

0 8.4

👆🏻

Transparency

Opaque

Density

2.71 g/cm³2.9-3.1 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

1.09 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

China, Russia

India, Russia

Africa

South Africa

Europe

Austria, Italy, Portugal, United Kingdom

Iceland

Others

Deposits in Western Continents

North America

Canada, USA

South America

Argentina, Bolivia, Ecuador

Brazil

Deposits in Oceania Continent

Australia

All about Travertine and Trachyandesite Properties

Know all about Travertine and Trachyandesite properties here. All properties of rocks are important as they define the type of rock and its application. Travertine belongs to Sedimentary Rocks while Trachyandesite belongs to Igneous Rocks.Texture of Travertine is Banded whereas that of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Travertine appears Fibrous and Trachyandesite appears Dull and Soft. The luster of Travertine is dull to pearly while that of Trachyandesite is earthy. Travertine is available in beige, black, blue, brown, grey, red, white, yellow colors whereas Trachyandesite is available in black, brown, light to dark grey colors. The commercial uses of Travertine and Trachyandesite are cemetery markers, creating artwork, gemstone, jewelry, paper industry, pottery.