Adakite

Amphibolite

Adakite and Amphibolite

Adakite

Amphibolite

Add ⊕

1 Definition

1.1 Definition

Adakite is an intermediate to felsic volcanic rock that has geochemical characteristics of magma which is said to be formed by partial melting of altered basalt that is subducted below volcanic arcs

Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase

1.2 History

1.2.1 Origin

Adak, Aleutian Islands

Unknown

1.2.2 Discoverer

Defant and Drummond

Alexandre Brongniart

1.3 Etymology

From Adak, Aleutian Islands

From Amphibole + -ite

1.4 Class

Igneous Rocks

Metamorphic Rocks

1.4.1 Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

1.5 Family

1.5.1 Group

Volcanic

Not Applicable

1.6 Other Categories

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Coarse Grained Rock, Medium Grained Rock, Opaque Rock

2 Texture

2.1 Texture

Porphyritic

Banded, Foliated, Massive

2.2 Color

Black, Brown, Light to Dark Grey

Black, Brown, Green, Grey

2.3 Maintenance

Less

2.4 Durability

Durable

2.4.1 Water Resistant

✔ ✘

2.4.2 Scratch Resistant

✔ ✘

2.4.3 Stain Resistant

✔ ✘

2.4.4 Wind Resistant

✔ ✘

2.4.5 Acid Resistant

✔ ✘

2.5 Appearance

Dull and Soft

Foliated

3 Uses

3.1 Architecture

3.1.1 Interior Uses

Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens

Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Kitchens

3.1.2 Exterior Uses

As Building Stone, As Facing Stone, Office Buildings

As Building Stone, As Facing Stone, Paving Stone, Office Buildings

3.1.3 Other Architectural Uses

Whetstones

Curbing

3.2 Industry

3.2.1 Construction Industry

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

As Dimension Stone, Building houses or walls, Cobblestones, Construction Aggregate, for Road Aggregate, Landscaping, Production of Glass and Ceramics, Roadstone

3.2.2 Medical Industry

Not Yet Used

3.3 Antiquity Uses

Monuments, Sculpture, Small Figurines

Artifacts, Sculpture, Small Figurines

3.4 Other Uses

3.4.1 Commercial Uses

Commemorative Tablets, Pottery, Used in aquariums

Cemetery Markers, Commemorative Tablets, Creating Artwork

4 Types

4.1 Types

Not Available

Hornblendite

4.2 Features

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

Clasts are smooth to touch, Matrix variable, Surfaces are often shiny

4.3 Archaeological Significance

4.3.1 Monuments

Used

4.3.2 Famous Monuments

Data Not Available

4.3.3 Sculpture

Used

4.3.4 Famous Sculptures

Data Not Available

4.3.5 Pictographs

Used

Not Used

4.3.6 Petroglyphs

Used

Not Used

4.3.7 Figurines

Used

4.4 Fossils

Absent

5 Formation

5.1 Formation

Adakite rocks are formed when the hydrous fluids are released from minerals that break down in metamorphosed basalt, and rise into the mantle they initiate partial melting.

Amphibolite is a coarse-grained metamorphic rock which forms by metamorphism of mafic igneous rocks like basalt and gabbro or from the metamorphism of clay-rich sedimentary rocks like marl or graywacke.

5.2 Composition

5.2.1 Mineral Content

Olivine, Plagioclase, Pyroxene

Amphibole, Andalusite, Biotite, Calcite, Epidote, Garnet, Hornblade, Kyanite, Magnetite, Olivine, Plagioclase, Pyroxene, Staurolite, Wollastonite

5.2.2 Compound Content

Aluminium Oxide, MgO, Silicon Dioxide

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

5.3 Transformation

5.3.1 Metamorphism

✔ ✘

5.3.2 Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Not Applicable

5.3.3 Weathering

✔ ✘

5.3.4 Types of Weathering

Chemical Weathering, Mechanical Weathering

5.3.5 Erosion

✔ ✘

5.3.6 Types of Erosion

Coastal Erosion, Sea Erosion, Water Erosion

Chemical Erosion, Glacier Erosion, Sea Erosion, Wind Erosion

6 Properties

6.1 Physical Properties

6.1.1 Hardness

3-46-7

1 7

6.1.2 Grain Size

Fine to Medium Grained

Medium to Coarse Grained

6.1.3 Fracture

Conchoidal

Irregular to Conchoidal

6.1.4 Streak

Bluish Black

White to Grey

6.1.5 Porosity

Less Porous

6.1.6 Luster

Grainy, Pearly and Vitreous

Vitreous to Dull

6.1.7 Compressive Strength

NANA

0.15 450

6.1.8 Cleavage

Not Available

Irregular

6.1.9 Toughness

Not Available

2.3

6.1.10 Specific Gravity

Not Available2.5

0 8.4

6.1.11 Transparency

Opaque

6.1.12 Density

Not Available2.85-3.07 g/cm³

0 1400

6.2 Thermal Properties

6.2.1 Specific Heat Capacity

NANA

0.14 3.2

6.2.2 Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

7 Reserves

7.1 Deposits in Eastern Continents

7.1.1 Asia

India, Russia

Russia, Turkey

7.1.2 Africa

Ethiopia, Somalia, South Africa

Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda

7.1.3 Europe

Iceland

Germany, Greece, Iceland, Norway, Poland

7.1.4 Others

Not Yet Found

7.2 Deposits in Western Continents

7.2.1 North America

Canada, USA

7.2.2 South America

Brazil

7.3 Deposits in Oceania Continent

7.3.1 Australia

Not Yet Found

South Australia, Western Australia

All about Adakite and Amphibolite Properties

Know all about Adakite and Amphibolite properties here. All properties of rocks are important as they define the type of rock and its application. Adakite belongs to Igneous Rocks while Amphibolite belongs to Metamorphic Rocks.Texture of Adakite is Porphyritic whereas that of Amphibolite is Banded, Foliated, Massive. Adakite appears Dull and Soft and Amphibolite appears Foliated. The luster of Adakite is grainy, pearly and vitreous while that of Amphibolite is vitreous to dull. Adakite is available in black, brown, light to dark grey colors whereas Amphibolite is available in black, brown, green, grey colors. The commercial uses of Adakite are commemorative tablets, pottery, used in aquariums and that of Amphibolite are cemetery markers, commemorative tablets, creating artwork.