Adakite

Jaspillite

Adakite and Jaspillite

Adakite

Jaspillite

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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

Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks

History

Origin

Adak, Aleutian Islands

Western Australia, Minnesota

Discoverer

Defant and Drummond

Unknown

Etymology

From Adak, Aleutian Islands

From Jaspilite (Mineral), a compact siliceous rock which resembles jasper

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Soft Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Coarse Grained Rock, Opaque Rock

Texture

Porphyritic

Banded, Trellis

Color

Black, Brown, Light to Dark Grey

Red, Reddish Brown

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull and Soft

Banded and Glassy

Uses

Architecture

Interior Uses

Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens

Decorative Aggregates, Interior Decoration

Exterior Uses

As Building Stone, As Facing Stone, Office Buildings

As Facing Stone, Garden Decoration, Paving Stone

Other Architectural Uses

Whetstones

Curbing

Industry

Construction Industry

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

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, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories

Medical Industry

Antiquity Uses

Monuments, Sculpture, Small Figurines

Artifacts, Jewellery, Monuments

Other Uses

Commercial Uses

Commemorative Tablets, Pottery, Used in aquariums

Creating Artwork, Jewelry

Types

Intermediate volcanic rock

Algoma-type , Lake Superior-type and Superior-type

Features

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

Is one of the oldest rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

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.

Jaspillite is a type of sedimentary rock which is formed by the compaction and sedimentation of pieces of broken or weathered rocks and minerals.

Composition

Mineral Content

Olivine, Plagioclase, Pyroxene

Coesite, Quartz, Sand

Compound Content

Aluminium Oxide, MgO, Silicon Dioxide

Fe, Iron(III) Oxide, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering

Erosion

✔ ✘

Types of Erosion

Coastal Erosion, Sea Erosion, Water Erosion

Chemical Erosion, Coastal Erosion

Properties

Physical Properties

Hardness

3-43

1 7

👆🏻

Grain Size

Fine to Medium Grained

Large and Coarse Grained

Fracture

Conchoidal

Streak

Bluish Black

White

Porosity

Less Porous

Very Less Porous

Luster

Grainy, Pearly and Vitreous

Earthy

Compressive Strength

200.00 N/mm²230.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

-99995.0-5.3

0 8.4

👆🏻

Transparency

Opaque

Translucent to Opaque

Density

-9999 g/cm³0-5.7 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K3.20 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Russia

Russia

Africa

Ethiopia, Somalia, South Africa

Europe

Iceland

Ukraine

Others

Deposits in Western Continents

North America

Canada, USA

South America

Brazil

Deposits in Oceania Continent

Australia

Western Australia

All about Adakite and Jaspillite Properties

Know all about Adakite and Jaspillite properties here. All properties of rocks are important as they define the type of rock and its application. Adakite belongs to Igneous Rocks while Jaspillite belongs to Sedimentary Rocks.Texture of Adakite is Porphyritic whereas that of Jaspillite is Banded, Trellis. Adakite appears Dull and Soft and Jaspillite appears Banded and Glassy. The luster of Adakite is grainy, pearly and vitreous while that of Jaspillite is earthy. Adakite is available in black, brown, light to dark grey colors whereas Jaspillite is available in red, reddish brown colors. The commercial uses of Adakite are commemorative tablets, pottery, used in aquariums and that of Jaspillite are creating artwork, jewelry.