Trachyandesite

Adamellite

Trachyandesite and Adamellite

Trachyandesite

Adamellite

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Definition

Trachyandesite is an extrusive igneous rock.

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

History

Origin

Indonesia

Italy

Discoverer

Unknown

Etymology

From French trachyandésite, trachy + andésite andesite, a lava intermediate in composition between trachyte and andesite

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

Class

Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

Family

Group

Volcanic

Plutonic

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Opaque Rock

Texture

Glassy, Massive, Porphyritic, Scoriaceous, Vesicular

Porphyritic

Color

Black, Brown, Light to Dark Grey

Black, Grey, Orange, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull and Soft

Veined or Pebbled

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Homes, Interior Decoration

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

Exterior Uses

As Building Stone, As Facing Stone, Garden Decoration

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

Other Architectural Uses

Curbing

Industry

Construction Industry

Building houses or walls, Cobblestones, for Road Aggregate, Rail Track Ballast, Roadstone

As Dimension Stone

Medical Industry

Antiquity Uses

Artifacts, Sculpture

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Creating Artwork, Pottery

Curling, Gemstone, Laboratory bench tops, Tombstones

Types

Basaltic Trachyandesite

Granite

Features

Has High structural resistance against erosion and climate, Very fine grained rock

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

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

Trachyandesite 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.

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.

Composition

Mineral Content

Alkali feldspar, Biotite, Olivine, Plagioclase, Pyroxene, Sodic plagioclase

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

Compound Content

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

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

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

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Glacier Erosion, Wind Erosion

Properties

Physical Properties

Hardness

4-56-7

1 7

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Grain Size

Fine Grained

Coarse Grained

Fracture

Conchoidal

Streak

Light to dark brown

White

Porosity

Less Porous

Luster

Earthy

Dull to Grainy with Sporadic parts Pearly and Vitreous

Compressive Strength

37.40 N/mm²175.00 N/mm²

0.15 450

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Cleavage

Perfect

Toughness

2.3

Specific Gravity

2.8-32.6-2.7

0 8.4

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Transparency

Opaque

Density

2.9-3.1 g/cm³2.6-2.8 g/cm³

0 1400

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Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.79 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Russia

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

Africa

South Africa

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

Europe

Iceland

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

Others

Deposits in Western Continents

North America

Canada, USA

South America

Brazil

Deposits in Oceania Continent

Australia

All about Trachyandesite and Adamellite Properties

Know all about Trachyandesite and Adamellite properties here. All properties of rocks are important as they define the type of rock and its application. Trachyandesite and Adamellite belong to Igneous Rocks.Texture of Trachyandesite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular whereas that of Adamellite is Porphyritic. Trachyandesite appears Dull and Soft and Adamellite appears Veined or Pebbled. The luster of Trachyandesite is earthy while that of Adamellite is dull to grainy with sporadic parts pearly and vitreous. Trachyandesite is available in black, brown, light to dark grey colors whereas Adamellite is available in black, grey, orange, pink, white colors. The commercial uses of Trachyandesite are creating artwork, pottery and that of Adamellite are curling, gemstone, laboratory bench tops, tombstones.