Tachylite and Marl
Definition
Definition
Tachylite is a vitreous form of basaltic volcanic glass. This glass is formed naturally by the rapid cooling of molten basalt
Marl is an unconsolidated sedimentary rock consisting of clay and lime
History
Origin
Iceland
Unknown
Discoverer
Unknown
Unknown
Etymology
From German Tachylite, from tachy- + Greek lutos soluble, melting
From Old French marle, from Late Latin marglia
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Medium Hardness Rock
Durable Rock, Soft Rock
Family
Group
Volcanic
Not Applicable
Other Categories
Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Opaque Rock
Texture
Texture
Vitreous
Earthy
Color
Black, Dark Brown
Beige, Brown, Green, Grey, White
Maintenance
More
Less
Durability
Durable
Durable
Water Resistant
Yes
Yes
Scratch Resistant
No
No
Stain Resistant
No
No
Wind Resistant
Yes
No
Acid Resistant
Yes
No
Appearance
Glassy
Rough and Dull
Uses
Architecture
Interior Uses
Decorative Aggregates, Interior Decoration
Decorative Aggregates, Floor Tiles
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
As Building Stone, Roof Tiles
Other Architectural Uses
Curbing
Curbing
Industry
Construction Industry
Cutting Tool, Knives, Landscaping, Scrapers
Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts
Artifacts, Jewellery, Sculpture, Small Figurines
Other Uses
Commercial Uses
Cemetery Markers, Creating Artwork
Creating Artwork, Soil Conditioner
Types
Types
Not Available
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
Features
Available in Lots of Colors and Patterns, Clasts are smooth to touch, NA
Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock
Archaeological Significance
Monuments
Not Yet Used
Not Yet Used
Famous Monuments
Not Applicable
Not Applicable
Sculpture
Not Yet Used
Used
Famous Sculptures
Not Applicable
Data Not Available
Pictographs
Used
Used
Petroglyphs
Used
Used
Figurines
Not Yet Used
Used
Fossils
Absent
Present
Formation
Formation
Tachylite 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.
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.
Composition
Mineral Content
Feldspar, Olivine
Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz
Compound Content
Fe, Mg
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide
Transformation
Metamorphism
Yes
No
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
Not Applicable
Weathering
Yes
Yes
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering
Erosion
Yes
Yes
Types of Erosion
Chemical Erosion, Sea Erosion, Water Erosion, Wind Erosion
Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion
Properties
Physical Properties
Hardness
5.5
2-3
Grain Size
Medium to Fine Coarse Grained
Very fine-grained
Fracture
Conchoidal
Conchoidal
Streak
Vermilion
White
Porosity
Less Porous
Highly Porous
Luster
Resinous
Dull
Compressive Strength
206.00 N/mm2
8
Not Available
Cleavage
Not Available
Not Available
Toughness
Not Available
2.6
Specific Gravity
2.4
2.2-2.8
Transparency
Opaque
Opaque
Density
3.058 g/cm3
2.4-2.8 g/cm3
Thermal Properties
Specific Heat Capacity
0.56 kJ/Kg K
22
Not Available
Resistance
Heat Resistant, Impact Resistant, Wear Resistant
Heat Resistant, Impact Resistant
Reserves
Deposits in Eastern Continents
Asia
Cambodia, Russia, South Korea
India, Pakistan, Russia
Africa
East Africa
Ethiopia, Kenya, Morocco, South Africa
Europe
England, Germany, Hungary, Iceland, Scotland, Sweden
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
Others
Hawaii Islands
Not Yet Found
Deposits in Western Continents
North America
USA
USA
South America
Not Yet Found
Colombia, Ecuador, Peru
Deposits in Oceania Continent
Australia
Victoria
New South Wales, Victoria, Western Australia
All about Tachylite and Marl Properties
Know all about Tachylite and Marl properties here. All properties of rocks are important as they define the type of rock and its application. Tachylite belongs to Igneous Rocks while Marl belongs to Sedimentary Rocks.Texture of Tachylite is Vitreous whereas that of Marl is Earthy. Tachylite appears Glassy and Marl appears Rough and Dull. The luster of Tachylite is resinous while that of Marl is dull. Tachylite is available in black, dark brown colors whereas Marl is available in beige, brown, green, grey, white colors. The commercial uses of Tachylite are cemetery markers, creating artwork and that of Marl are creating artwork, soil conditioner.
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