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Amphibolite
Amphibolite

Dacite
Dacite



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Amphibolite
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Dacite

Amphibolite vs Dacite

Definition

Definition

Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase
Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite

History

Origin

Unknown
Romania and Moldova, Europe

Discoverer

Alexandre Brongniart
Unknown

Etymology

From Amphibole + -ite
From Dacia, a province of the Roman Empire which lay between the Danube River and Carpathian Mountains where the rock was first described

Class

Metamorphic Rocks
Igneous Rocks

Sub-Class

Durable Rock, Hard Rock
Durable Rock, Soft Rock

Family

Group

Not Applicable
Volcanic

Other Categories

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

Texture

Texture

Banded, Foliated, Massive
Aphanitic to Porphyritic

Color

Black, Brown, Green, Grey
Bluish - Grey, Brown, Grey, Light to Dark Grey

Maintenance

Less
Less

Durability

Durable
Durable

Water Resistant

Scratch Resistant

Stain Resistant

Wind Resistant

Acid Resistant

Appearance

Foliated
Vesicular

Uses

Architecture

Interior Uses

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

Exterior Uses

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

Other Architectural Uses

Curbing
Curbing

Industry

Construction Industry

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

Medical Industry

Not Available
Not Available

Antiquity Uses

Artifacts, Sculpture, Small Figurines
Artifacts

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Creating Artwork
Commemorative Tablets, Creating Artwork

Types

Types

Hornblendite
Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite

Features

Clasts are smooth to touch, Matrix variable, Surfaces are often shiny
Host Rock for Lead, Is one of the oldest rock

Archaeological Significance

Monuments

Used
Not Yet Used

Famous Monuments

Not Available
Not Applicable

Sculpture

Used
Not Yet Used

Famous Sculptures

Not Available
Not Applicable

Pictographs

Not Used
Used

Petroglyphs

Not Used
Used

Figurines

Used
Not Yet Used

Fossils

Absent
Absent

Formation

Formation

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.
Dacitic magma is formed by the subduction of young oceanic crust under a thick felsic continental plate. Further, the Oceanic crust is hydrothermally altered as quartz and sodium are added.

Composition

Mineral Content

Amphibole, Andalusite, Biotite, Calcite, Epidote, Garnet, Hornblade, Kyanite, Magnetite, Olivine, Plagioclase, Pyroxene, Staurolite, Wollastonite
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon

Compound Content

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

Transformation

Metamorphism

Types of Metamorphism

Not Applicable
Burial Metamorphism, Cataclastic Metamorphism

Weathering

Types of Weathering

Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

Types of Erosion

Chemical Erosion, Glacier Erosion, Sea Erosion, Wind Erosion
Chemical Erosion

Properties

Physical Properties

Hardness

6-72-2.25
1 7
👆🏻

Grain Size

Medium to Coarse Grained
Medium to Fine Coarse Grained

Fracture

Irregular to Conchoidal
Conchoidal

Streak

White to Grey
White

Porosity

Less Porous
Less Porous

Luster

Vitreous to Dull
Subvitreous to Dull

Compressive Strength

NANA
0.15 450
👆🏻

Cleavage

Not Available
Perfect

Toughness

2.3
Not Available

Specific Gravity

2.52.86-2.87
0 8.4
👆🏻

Transparency

Opaque
Translucent

Density

2.85-3.07 g/cm32.77-2.771 g/cm3
0 1400
👆🏻

Thermal Properties

Specific Heat Capacity

NA0.92 kJ/Kg K
0.14 3.2
👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Russia, Turkey
Not Available

Africa

Burundi, Djibouti, Eritrea, Ethiopia, Kenya, Madagascar, Rwanda, Somalia, South Africa, Sudan, Tanzania, Uganda
Not Available

Europe

Germany, Greece, Iceland, Norway, Poland
France, Greece, Romania, Scotland, Spain

Others

Not Available
Not Available

Deposits in Western Continents

North America

Canada, USA
USA

South America

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

Deposits in Oceania Continent

Australia

South Australia, Western Australia
New Zealand, South Australia, Western Australia

Amphibolite vs Dacite 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 Amphibolite and Dacite Reserves. Amphibolite can be defined as a granular metamorphic rock which mainly consist of hornblende and plagioclase. Dacite is a volcanic igneous rock which is rintermediate in composition between andesite and rhyolite. 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 Amphibolite vs Dacite information and Amphibolite vs Dacite characteristics in the upcoming sections.

Amphibolite vs Dacite 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. Amphibolite vs Dacite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Amphibolite and Properties of Dacite. Learn more about Amphibolite vs Dacite in the next section. The interior uses of Amphibolite include Countertops, Decorative aggregates, Entryways, Floor tiles, Flooring, Homes, Hotels and Kitchens whereas the interior uses of Dacite include Decorative aggregates, Entryways and Interior decoration. Due to some exceptional properties of Amphibolite and Dacite, they have various applications in construction industry. The uses of Amphibolite in construction industry include As dimension stone, Building houses or walls, Cobblestones, Construction aggregate, For road aggregate, Landscaping, Production of glass and ceramics, Roadstone and that of Dacite include As dimension stone, Construction aggregate, For road aggregate, Landscaping.

More about Amphibolite and Dacite

Here you can know more about Amphibolite and Dacite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Amphibolite and Dacite consists of mineral content and compound content. The mineral content of Amphibolite includes Amphibole, Andalusite, Biotite, Calcite, Epidote, Garnet, Hornblade, Kyanite, Magnetite, Olivine, Plagioclase, Pyroxene, Staurolite, Wollastonite and mineral content of Dacite includes Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon. You can also check out the list of all Igneous Rocks. When we have to compare Amphibolite vs Dacite, the texture, color and appearance plays an important role in determining the type of rock. Amphibolite is available in black, brown, green, grey colors whereas, Dacite is available in bluish - grey, brown, grey, light to dark grey colors. Appearance of Amphibolite is Foliated and that of Dacite is Vesicular. Properties of rock is another aspect for Amphibolite vs Dacite. The hardness of Amphibolite is 6-7 and that of Dacite is 2-2.25. The types of Amphibolite are Hornblendite whereas types of Dacite are Footwall Dacite, Hanging wall Dacite, Tuff and Biotite Dacite. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Amphibolite is white to grey while that of Dacite is white. The specific heat capacity of Amphibolite is Not Available and that of Dacite is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Amphibolite is heat resistant, pressure resistant, wear resistant whereas Dacite is heat resistant, impact resistant, pressure resistant, wear resistant.