Adamellite and Skarn

Adamellite

Skarn

Definition

Adamellite is a coarse-grained porphyritic igneous rock, a variety of Monzogranite and dominated by phenocrysts of orthoclase in a granular groundmass of perthite, plagioclase and quartz

Skarns are formed during regional or contact metamorphism and from a variety of metasomatic processes involving fluids of magmatic, metamorphic, and/or marine origin

History

Origin

Italy

USA, Australia

Discoverer

Unknown

Tornebohm

Etymology

From German adamellit and from Monte Adamello, a mountain in Italy, its locality

From an old Swedish mining term originally used to describe a type of silicate gangue or waste rock.

Class

Igneous Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Plutonic

Not Applicable

Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Porphyritic

Earthy, Mud-rich, Rough

Color

Black, Grey, Orange, Pink, White

Black, Brown, Colourless, Green, Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Veined or Pebbled

Dull

Uses

Architecture

Interior Uses

Bathrooms, Countertops, Decorative Aggregates, Entryways, Floor Tiles, Homes, Hotels, Kitchens, Stair Treads

Decorative Aggregates, Entryways, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Bridges, Paving Stone, Near Swimming Pools, Office Buildings, Resorts

As Building Stone, As Facing Stone, Garden Decoration, Paving Stone

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone

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

Medical Industry

Not Yet Used

Not Applicable

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

Curling, Gemstone, Laboratory bench tops, Tombstones

Creating Artwork, Gemstone, Jewelry, Metallurgical Flux, Source of Magnesia (MgO)

Types

Not Available

Endoskarns

Features

Available in Lots of Colors and Patterns, It is One of the Oldest, Strongest and Hardest Rock

Host Rock for Lead, Zinc and Copper Deposits

Archaeological Significance

Monuments

Used

Famous Monuments

Data Not Available

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Not Used

Petroglyphs

Not Used

Figurines

Used

Fossils

Absent

Formation

Adamellite is a type of Igneous rock which is formed through the cooling and solidification of lava or magma and is a variety of Monzogranite.

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.

Composition

Mineral Content

Apatite, Biotite, Chlorite, Orthoclase, Perthite, Plagioclase, Quartz, Titanite, Zircon

Calcite, Enstatite, Epidote, Garnet, Magnetite, Pyroxene, Titanite

Compound Content

Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide

Au, CaO, Carbon Dioxide, Cu, Fe, MgO

Transformation

Metamorphism

Yes

Types of Metamorphism

Burial Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

Yes

Types of Weathering

Biological Weathering

Not Applicable

Erosion

Yes

Types of Erosion

Chemical Erosion, Glacier Erosion, Wind Erosion

Not Applicable

Properties

Physical Properties

Hardness

6-7

6.5

Grain Size

Coarse Grained

Fine Grained

Fracture

Not Available

Irregular

Streak

White

Light to dark brown

Porosity

Less Porous

Luster

Dull to Grainy with Sporadic parts Pearly and Vitreous

Waxy and Dull

Compressive Strength

175.00 N/mm²

Not Available

Cleavage

Not Available

Slaty

Toughness

Not Available

2.4

Specific Gravity

2.6-2.7

2.86

Transparency

Opaque

Density

2.6-2.8 g/cm³

2.8-2.9 g/cm³

Thermal Properties

Specific Heat Capacity

0.79 kJ/Kg K

0.92 kJ/Kg K

Resistance

Heat Resistant, Wear Resistant

Heat Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Iran, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Vietnam

China, India, Russia, Saudi Arabia, South Korea, Sri Lanka

Africa

Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

South Africa, Western Africa

Europe

Austria, Belgium, Finland, France, Germany, Italy, Norway, Sardinia, Spain, Switzerland, The Czech Republic, Venezuela

United Kingdom

Others

Not Yet Found

Deposits in Western Continents

North America

Canada, USA

Canada

South America

Not Yet Found

Brazil, Colombia, Paraguay

Deposits in Oceania Continent

Australia

Not Yet Found

Central Australia, Western Australia

Summary >>

<< Reserves

All about Adamellite and Skarn Properties

Know all about Adamellite and Skarn properties here. All properties of rocks are important as they define the type of rock and its application. Adamellite belongs to Igneous Rocks while Skarn belongs to Metamorphic Rocks.Texture of Adamellite is Porphyritic whereas that of Skarn is Earthy, Mud-rich, Rough. Adamellite appears Veined or Pebbled and Skarn appears Dull. The luster of Adamellite is dull to grainy with sporadic parts pearly and vitreous while that of Skarn is waxy and dull. Adamellite is available in black, grey, orange, pink, white colors whereas Skarn is available in black, brown, colourless, green, grey, white colors. The commercial uses of Adamellite are curling, gemstone, laboratory bench tops, tombstones and that of Skarn are creating artwork, gemstone, jewelry, metallurgical flux, source of magnesia (mgo).