Definition
Travertine is a mineral consisting of layered calcium carbonate formed by deposition from spring waters
Rhyolite is a fine-grained igneous rock which is rich in silica
Origin
Italy
North America
Discoverer
Marcus Vitruvius Pollio
Ferdinand von Richthofen
Etymology
From Italian travertino a kind of building stone, from Tiburs, adjective from Tibur (Tivoli), in Italy
From German Rhyolit, from Greek rhuax lava stream + lithos stone
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Hard Rock
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock
Texture
Banded
Aphanitic, Glassy, Porphyritic
Color
Beige, Black, Blue, Brown, Grey, Red, White, Yellow
Grey, White, Light Black
Durability
Durable
Durable
Scratch Resistant
Yes
Yes
Appearance
Fibrous
Banded
Interior Uses
Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration
Decorative Aggregates, Homes, Hotels, Interior Decoration, Kitchens
Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings
As Building Stone, As Facing Stone, Paving Stone, Office Buildings
Other Architectural Uses
Curbing
-
Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar
Arrowheads, As Dimension Stone, Building houses or walls, Construction Aggregate, Cutting Tool, for Road Aggregate, Knives
Antiquity Uses
Artifacts, Jewellery, Monuments, Sculpture, Small Figurines
Artifacts
Commercial Uses
Cemetery Markers, Creating Artwork, Gemstone, Jewelry, Paper Industry, Pottery
Gemstone, Laboratory bench tops, Jewelry
Types
Thermal Travertine and Tufa
Pumice Rocks, Obsidian Rocks, Perlite Rocks, Porphyritic Rocks.
Features
Stalactites and stalagmites are formed from this rock, Surfaces are often shiny, Very fine grained rock
Acidic in nature, Available in lots of colors
Archaeological Significance
Famous Monuments
Colosseum in Rome, Italy, Sacré Coeur in Paris, France, Trevi Fountain in Rome, Italy
-
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.
Rhyolite is a felsic extrusive rock and due to its high silica content, rhyolite lava is very viscous and is volcanic equivalent of granite.
Mineral Content
Calcite, Clay, Feldspar, Micas, Quartz
Biotite, Feldspar, Hornblade, Plagioclase, Pyroxene, Quartz
Compound Content
Ca, NaCl, CaO, Oxygen
Ca, Fe, Potassium Oxide, Mg, Potassium, Silicon Dioxide, Sodium
Types of Metamorphism
-
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion
Chemical Erosion, Sea Erosion, Water Erosion, Wind Erosion
Grain Size
Fine Grained
Large and Coarse Grained
Fracture
Splintery
Sub-conchoidal
Porosity
Highly Porous
Highly Porous
Luster
Dull to Pearly
Earthy
Specific Gravity
1.68
2.65-2.67
Transparency
Opaque
Opaque
Density
2.71 g/cm3
2.4-2.6 g/cm3
Resistance
Impact Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Wear Resistant
Deposits in Eastern Continents
Asia
China, Russia
China, India
Africa
-
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
Europe
Austria, Italy, Portugal, United Kingdom
Germany, Iceland, Ireland, Italy, Spain
Deposits in Western Continents
North America
Canada, USA
Canada, USA
South America
Argentina, Bolivia, Ecuador
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
Deposits in Oceania Continent
Australia
-
New Zealand, Queensland, Western Australia
All about Travertine and Rhyolite Properties
Know all about Travertine and Rhyolite properties here. All properties of rocks are important as they define the type of rock and its application. Travertine belongs to Sedimentary Rocks while Rhyolite belongs to Igneous Rocks.Texture of Travertine is Banded whereas that of Rhyolite is Aphanitic, Glassy, Porphyritic. Travertine appears Fibrous and Rhyolite appears Banded. The luster of Travertine is dull to pearly while that of Rhyolite is earthy. Travertine is available in beige, black, blue, brown, grey, red, white, yellow colors whereas Rhyolite is available in grey, white, light black colors. The commercial uses of Travertine are cemetery markers, creating artwork, gemstone, jewelry, paper industry, pottery and that of Rhyolite are gemstone, laboratory bench tops, jewelry.