×

Gneiss
Gneiss

Adakite
Adakite



ADD
Compare
X
Gneiss
X
Adakite

Gneiss vs Adakite

Add ⊕

Definition

Definition

Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks
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

History

Origin

-
Adak, Aleutian Islands

Discoverer

Unknown
Defant and Drummond

Etymology

From the Middle High German verb gneist (to spark; so called because the rock glitters)
From Adak, Aleutian Islands

Class

Metamorphic Rocks
Igneous Rocks

Sub-Class

Durable Rock, Hard Rock
Durable Rock, Medium Hardness Rock

Family

Group

-
Volcanic

Other Categories

Coarse Grained Rock, Medium Grained Rock, Opaque Rock
Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Texture

Banded, Foliated, Platy
Porphyritic

Color

Black, Brown, Pink, Red, White
Black, Brown, Light to Dark Grey

Maintenance

More
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Foliated
Dull and Soft

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Flooring, Interior Decoration
Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens

Exterior Uses

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

Other Architectural Uses

Curbing
Whetstones

Industry

Construction Industry

As Dimension Stone
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

Medical Industry

-
-

Antiquity Uses

Artifacts
Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Jewelry, Tombstones, Used in aquariums
Commemorative Tablets, Pottery, Used in aquariums

Types

Types

Augen Gneiss, Henderson Gneiss, Lewisian Gneiss, Archean and Proterozoic Gneiss.
Intermediate volcanic rock

Features

Generally rough to touch, Is one of the oldest rock
Has High structural resistance against erosion and climate, Host rock for Diamond, Very fine grained rock

Archaeological Significance

Monuments

-
-

Famous Monuments

Konark Sun Temple in India, Washington Monument, US
-

Sculpture

-
-

Famous Sculptures

-
-

Pictographs

-
-

Petroglyphs

-
-

Figurines

-
-

Fossils

Absent
Absent

Formation

Formation

Gneiss is a high grade metamorphic rock i.e. it has been subjected to higher temperatures and pressures than schist. It is formed by the metamorphosis of Gneiss forms from volcanic rock, shale or granitie.
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.

Composition

Mineral Content

Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon
Olivine, Plagioclase, Pyroxene

Compound Content

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

Transformation

Metamorphism

Types of Metamorphism

Impact Metamorphism
Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

Types of Weathering

Biological Weathering, Mechanical Weathering
Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

Chemical Erosion, Coastal Erosion, Sea Erosion
Coastal Erosion, Sea Erosion, Water Erosion

Properties

Physical Properties

Hardness

73-4
1 7
👆🏻

Grain Size

Medium to Coarse Grained
Fine to Medium Grained

Fracture

Irregular
Conchoidal

Streak

White
Bluish Black

Porosity

Very Less Porous
Less Porous

Luster

Dull
Grainy, Pearly and Vitreous

Compressive Strength

125.00 N/mm2200.00 N/mm2
0.15 450
👆🏻

Cleavage

-
-

Toughness

1.2
-

Specific Gravity

2.5-2.7-9999
0 8.4
👆🏻

Transparency

Translucent to Opaque
Opaque

Density

2.6-2.9 g/cm3-9999 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

0.70 kJ/Kg K0.84 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant
Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Iran, Iraq, Kazakhstan, Kyrgyzstan, Mongolia, Russia
India, Russia

Africa

Cameroon, Ethiopia, Ghana, Kenya, Madagascar, Morocco, Mozambique, Namibia, Nigeria, Tanzania, Togo
Ethiopia, Somalia, South Africa

Europe

Albania, Austria, Bosnia and Herzegovina, Finland, France, Georgia, Germany, Hungary, Italy, Kosovo, Monaco, Norway, Poland, Romania, Serbia, Slovakia, Slovenia, Switzerland, Ukraine, United Kingdom
Iceland

Others

-
-

Deposits in Western Continents

North America

Canada, Costa Rica, Cuba, Mexico, Panama, USA
Canada, USA

South America

Argentina, Bolivia, Brazil, Chile, Colombia, Ecuador, Peru, Venezuela
Brazil

Deposits in Oceania Continent

Australia

New South Wales, New Zealand, Queensland, Victoria
-

Gneiss vs Adakite Information

Earth’s outer layer is covered by rocks and these rocks have different physical and chemical properties. As two rocks are not same, it’s fun to compare them. You can also know more about Gneiss and Adakite Reserves. Gneiss is a common and widely distributed type of rock formed by high-grade regional metamorphic processes from pre-existing formations that were originally either igneous or sedimentary rocks. 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. These rocks are composed of many distinct minerals. The process of formation of rocks is different for various rocks. Rocks are quarried from many years for various purposes. You can check out Gneiss vs Adakite information and Gneiss vs Adakite characteristics in the upcoming sections.

Gneiss vs Adakite Characteristics

Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Gneiss vs Adakite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Gneiss and Properties of Adakite. Learn more about Gneiss vs Adakite in the next section. The interior uses of Gneiss include Countertops, Decorative aggregates, Flooring and Interior decoration whereas the interior uses of Adakite include Decorative aggregates, Floor tiles, Homes, Hotels and Kitchens. Due to some exceptional properties of Gneiss and Adakite, they have various applications in construction industry. The uses of Gneiss in construction industry include As dimension stone and that of Adakite include As dimension stone, Cobblestones, Rail track ballast, Roadstone.

More about Gneiss and Adakite

Here you can know more about Gneiss and Adakite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Gneiss and Adakite consists of mineral content and compound content. The mineral content of Gneiss includes Biotite, Chlorite, Feldspar, Garnet, Graphite, Hornblade, Micas, Muscovite or Illite, Quartz, Quartzite, Silica, Zircon and mineral content of Adakite includes Olivine, Plagioclase, Pyroxene. You can also check out the list of all Metamorphic Rocks. When we have to compare Gneiss vs Adakite, the texture, color and appearance plays an important role in determining the type of rock. Gneiss is available in black, brown, pink, red, white colors whereas, Adakite is available in black, brown, light to dark grey colors. Appearance of Gneiss is Foliated and that of Adakite is Dull and Soft. Properties of rock is another aspect for Gneiss vs Adakite. The hardness of Gneiss is 7 and that of Adakite is 3-4. The types of Gneiss are Augen Gneiss, Henderson Gneiss, Lewisian Gneiss, Archean and Proterozoic Gneiss. whereas types of Adakite are Intermediate volcanic rock. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Gneiss is white while that of Adakite is bluish black. The specific heat capacity of Gneiss is 0.70 kJ/Kg K and that of Adakite is 0.84 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Gneiss is heat resistant, pressure resistant, scratch resistant, wear resistant whereas Adakite is heat resistant, pressure resistant, wear resistant.