Definition
Marl is an unconsolidated sedimentary rock consisting of clay and lime
Boninite is a mafic extrusive rock which is high in magnesium and silica content, formed in fore-arc environments, typically during the early stages of subduction
Discoverer
William Smith
Unknown
Etymology
From Old French marle, from Late Latin marglia
From its occurrence in the Izu-Bonin arc south of Japan
Class
Sedimentary Rocks
Igneous Rocks
Sub-Class
Durable Rock, Soft Rock
Durable Rock, Hard Rock
Other Categories
Fine Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Texture
Earthy
Aphanitic to Porphyritic
Color
Beige, Brown, Green, Grey, White
Bluish - Grey, Brown, Green, Grey
Durability
Durable
Durable
Appearance
Rough and Dull
Dull and Soft
Interior Uses
Decorative Aggregates, Floor Tiles
Decorative Aggregates, Homes, Kitchens
Exterior Uses
As Building Stone, Roof Tiles
Garden Decoration, Office Buildings
Other Architectural Uses
Curbing
-
Construction Industry
Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories
Antiquity Uses
Artifacts, Jewellery, Sculpture, Small Figurines
Artifacts
Commercial Uses
Creating Artwork, Soil Conditioner
An Oil and Gas Reservoir, Cemetery Markers, Creating Artwork, Soil Conditioner, Source of Magnesia (MgO)
Types
Clay Marl ,Blue Marl, Red Marl, High Bank Marl, Shell Layer Marl, Under Shell Layer Marl, Sand Marl, Green Marl, Grey Marl and Clayey Marl
Basalt
Features
Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock
Available in Lots of Colors and Patterns, High Mg content, Is one of the oldest rock
Archaeological Significance
Formation
Marl forms when very fine-grained clay particles are deposited in water which settles at the bottom of water bodies and are compacted by overlying sediment; the water squeezes out and hence forming Marl rock.
Boninite is a type of Igneous rock which is formed through the cooling and solidification of lava or existing rocks.
Mineral Content
Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite
Compound Content
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide
Silicon Dioxide
Types of Metamorphism
-
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism
Types of Weathering
Biological Weathering, Chemical Weathering
Biological Weathering
Types of Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion, Wind Erosion
Grain Size
Very fine-grained
Fine Grained
Fracture
Conchoidal
Uneven
Porosity
Highly Porous
Less Porous
Specific Gravity
2.2-2.8
2.5-2.8
Transparency
Opaque
Opaque
Density
2.4-2.8 g/cm3
-9999 g/cm3
Resistance
Heat Resistant, Impact Resistant
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
Deposits in Eastern Continents
Asia
India, Pakistan, Russia
-
Africa
Ethiopia, Kenya, Morocco, South Africa
South Africa
Europe
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
England, Finland, United Kingdom
Others
-
Antarctica, Greenland
Deposits in Western Continents
South America
Colombia, Ecuador, Peru
Colombia, Uruguay
Deposits in Oceania Continent
Australia
New South Wales, Victoria, Western Australia
New Zealand, Western Australia
All about Marl and Boninite Properties
Know all about Marl and Boninite properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Boninite belongs to Igneous Rocks.Texture of Marl is Earthy whereas that of Boninite is Aphanitic to Porphyritic. Marl appears Rough and Dull and Boninite appears Dull and Soft. The luster of Marl is dull while that of Boninite is vitreous. Marl is available in beige, brown, green, grey, white colors whereas Boninite is available in bluish - grey, brown, green, grey colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Boninite are an oil and gas reservoir, cemetery markers, creating artwork, soil conditioner, source of magnesia (mgo).