Definition
Skarns are formed during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, and/or marine origin
Diamictite is a sedimentary rock that consists of non-sorted to poorly sorted terrigenous sediment containing particles that range in size from clay to boulders, suspended in a matrix of mudstone or sandstone
Origin
USA, Australia
Southern Mongolia
Discoverer
Tornebohm
Unknown
Etymology
From an old Swedish mining term originally used to describe a type of silicate gangue or waste rock.
From Greek dia through and meiktós or mixed
Class
Metamorphic Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock
Texture
Earthy, Mud-rich, Rough
Clastic
Color
Black, Brown, Green, Grey, White
Brown, Buff
Durability
Durable
Durable
Interior Uses
Decorative Aggregates, Entryways, Interior Decoration
Decorative Aggregates, Interior Decoration
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Paving Stone
As Building Stone, Paving Stone
Other Architectural Uses
Curbing
Curbing
Construction Industry
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, Gold and Silver production, Manufacture of Magnesium and Dolomite Refractories
As Dimension Stone, Construction Aggregate, for Road Aggregate, Landscaping, Roadstone
Antiquity Uses
Artifacts, Monuments, Sculpture
Artifacts
Commercial Uses
Creating Artwork, Gemstone, Jewelry, Metallurgical Flux, Source of Magnesia (MgO)
Commemorative Tablets, Creating Artwork, Production of Lime
Types
Endoskarns
Bedded Diamictite and Laminated Diamictite
Features
Host Rock for Lead, Zinc and Copper Deposits
Host Rock for Lead, Is one of the oldest rock
Archaeological Significance
Formation
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Skarn is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.
Diamictite is unevenly sorted terrigenous, non-calcareous sedimentary rock which forms due to weathering of mudstone and sandstone.
Mineral Content
Calcite, Enstatite, Epidote, Garnet, Magnetite, Pyroxene, Titanite
Calcite, Clay, Feldspar, Micas, Quartz
Compound Content
Au, CaO, Carbon Dioxide, Cu, Fe, MgO
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Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
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Types of Weathering
-
Biological Weathering, Chemical Weathering
Types of Erosion
-
Chemical Erosion, Coastal Erosion, Water Erosion
Grain Size
Fine Grained
Coarse Grained
Fracture
Irregular
Conchoidal to Uneven
Streak
Light to dark brown
Light to dark brown
Porosity
Less Porous
Highly Porous
Luster
Waxy and Dull
Grainy, Pearly and Vitreous
Specific Gravity
2.86
4.3-5.0
Transparency
Opaque
Opaque
Density
2.8-2.9 g/cm3
2.2-2.35 g/cm3
Resistance
Heat Resistant
Heat Resistant, Impact Resistant
Deposits in Eastern Continents
Asia
China, India, Russia, Saudi Arabia, South Korea, Sri Lanka
China, India, Kazakhstan, Mongolia, Russia
Africa
South Africa, Western Africa
Namibia, Nigeria, South Africa
Europe
United Kingdom
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom
Deposits in Western Continents
North America
Canada
Canada, USA
South America
Brazil, Colombia, Paraguay
Brazil, Venezuela
Deposits in Oceania Continent
Australia
Central Australia, Western Australia
New South Wales, New Zealand
All about Skarn and Diamictite Properties
Know all about Skarn and Diamictite properties here. All properties of rocks are important as they define the type of rock and its application. Skarn belongs to Metamorphic Rocks while Diamictite belongs to Sedimentary Rocks.Texture of Skarn is Earthy, Mud-rich, Rough whereas that of Diamictite is Clastic. Skarn appears Dull and Diamictite appears Banded. The luster of Skarn is waxy and dull while that of Diamictite is grainy, pearly and vitreous. Skarn is available in black, brown, green, grey, white colors whereas Diamictite is available in brown, buff colors. The commercial uses of Skarn are creating artwork, gemstone, jewelry, metallurgical flux, source of magnesia (mgo) and that of Diamictite are commemorative tablets, creating artwork, production of lime.