Definition
Marble is a non-foliated metamorphic rock which is composed of recrystallized carbonate which is formed when limestone is exposed to high temperatures and pressures over a long time
Coquina is a sedimentary rock that is composed either wholly or almost entirely of the transported, abraded, and mechanically-sorted fragments of the shells of molluscs, trilobites, brachiopods, or other invertebrates
Origin
Egypt
European Foreland Basins
Discoverer
Unknown
Unknown
Etymology
From the Greek marmaros, shining stone and also from the English word marmoreal meaning marble-like
From Concha (Latin)+ Coquina(Spanish) +conch(English)= Couquina (mid 19th century)
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Other Categories
Medium Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock
Color
Black, Blue, Brown, Grey, Pink, White
Beige, Buff, Orange
Durability
Durable
Non-Durable
Appearance
Veined and Shiny
Layered, Banded, Veined and Shiny
Interior Uses
Bathrooms, Countertops, Decorative Aggregates, Entryways, Floor Tiles, Homes, Hotels, Interior Decoration, Kitchens, Stair Treads
Decorative Aggregates, Homes, Hotels, Interior Decoration
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
Garden Decoration, Office Buildings
Other Architectural Uses
-
Curbing
Construction Industry
As Dimension Stone
Building houses or walls, Construction Aggregate
Antiquity Uses
Artifacts, Jewellery, Monuments, Sculpture, Small Figurines
Artifacts, Monuments, Sculpture, Small Figurines
Commercial Uses
Cemetery Markers, Commemorative Tablets, Creating Artwork, Curling, Laboratory bench tops, Paper Industry, Tombstones, Used in aquariums, Whiting material in toothpaste, paint and paper
Creating Artwork
Types
Breccia Marble, Carrara Marble, Calacatta marble, Cultured Marble, Polished Marble, Honed Marble, Sand Marble
Sedimentary rock
Features
Available in Lots of Colors and Patterns, Easily splits into thin plates, Generally rough to touch, Is one of the oldest rock
Available in Lots of Colors and Patterns, Is one of the oldest rock
Archaeological Significance
Famous Monuments
Al Aqsa Mosque in Jerusalem, Buland Darwaza in Agra, India, Capitol Hill Building, Washington DC, Charminar in Hyderabad, India, Chhatrapati Shivaji Terminus in Maharashtra, India, Ephesus in Turkey, Faisal Mosque in Islamabad, Pakistan, Humayun's Tomb in Delhi, India, Jama Masjid in Delhi, India, Lotus Temple in New Delhi, India, Louvre in Paris, France, Mysore Palace in Karnataka, India, Neuschwanstein in Bavaria, Palace of Parliament in Bucharest, Romania, Parthenon in Greece, Potala Palace in Lahasa, Tibet, Prophet’s Mosque in Medina, Qutb Minar in India, Saint Basil's Cathedral in Moscow, Russia, St. Peter’s Cathedral in Vatican City, Taj Mahal in Agra, India, Tower of Pisa, Italy, Victoria Memorial in Kolkata, India, Washington Monument, US
-
Famous Sculptures
Ajanta Caves in Maharashtra, India, Bust of Artemis, Elephanta Caves in Maharashtra, India, Lincoln Memorial in America
-
Formation
Marble is a metamorphic rock produced from limestone in the earth crust. It is formed by the metamorphism of limestone.
Coquina is a sedimentary rock which is formed when billions of small clam-like seashell, called Coquina, or cockleshell are die and hence are deposited, buried and turns into a rock when pressure is applied.
Mineral Content
Garnet, Graphite, Olivine, Pyrite, Quartz
Apatite, Augite, Bronzite, Calcite, Chert, Chlorite, Clay Minerals, Epidote, Feldspar, Garnet, Micas, Muscovite or Illite
Compound Content
CaO, Iron(III) Oxide, FeO, MgO, Silicon Dioxide
CaO, Carbon Dioxide, Iron(III) Oxide, MgO
Types of Metamorphism
Impact Metamorphism
-
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Types of Erosion
Chemical Erosion, Coastal Erosion
Coastal Erosion, Sea Erosion, Water Erosion, Wind Erosion
Grain Size
Medium Grained
Coarse Grained
Porosity
Less Porous
Highly Porous
Luster
Dull to Pearly to Subvitreous
Dull to Vitreous to Submetallic
Specific Gravity
2.86-2.87
1.10-2.24
Transparency
Opaque
Opaque
Density
2.4-2.7 g/cm3
2.8-2.9 g/cm3
Resistance
Heat Resistant
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
Deposits in Eastern Continents
Europe
Italy, Spain
United Kingdom
Deposits in Western Continents
Deposits in Oceania Continent
Australia
New South Wales, New Zealand, Queensland, Victoria
-
All about Marble and Coquina Properties
Know all about Marble and Coquina properties here. All properties of rocks are important as they define the type of rock and its application. Marble belongs to Metamorphic Rocks while Coquina belongs to Sedimentary Rocks.Texture of Marble is Granular whereas that of Coquina is Clastic. Marble appears Veined and Shiny and Coquina appears Layered, Banded, Veined and Shiny. The luster of Marble is dull to pearly to subvitreous while that of Coquina is dull to vitreous to submetallic. Marble is available in black, blue, brown, grey, pink, white colors whereas Coquina is available in beige, buff, orange colors. The commercial uses of Marble and Coquina are cemetery markers, commemorative tablets, creating artwork, curling, laboratory bench tops, paper industry, tombstones, used in aquariums, whiting material in toothpaste, paint and paper.