Jaspillite

Adakite

Jaspillite and Adakite

Jaspillite

Adakite

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Definition

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

Western Australia, Minnesota

Adak, Aleutian Islands

Discoverer

Unknown

Defant and Drummond

Etymology

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

From Adak, Aleutian Islands

Class

Sedimentary Rocks

Igneous Rocks

Sub-Class

Durable Rock, Soft Rock

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Banded, Trellis

Porphyritic

Color

Red, Reddish Brown

Black, Brown, Light to Dark Grey

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Banded and Glassy

Dull and Soft

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Floor Tiles, Homes, Hotels, Kitchens

Exterior Uses

As Facing Stone, Garden Decoration, Paving Stone

As Building Stone, As Facing Stone, Office Buildings

Other Architectural Uses

Curbing

Whetstones

Industry

Construction Industry

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

As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone

Medical Industry

Antiquity Uses

Artifacts, Jewellery, Monuments

Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

Creating Artwork, Jewelry

Commemorative Tablets, Pottery, Used in aquariums

Types

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

Intermediate volcanic rock

Features

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

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

Absent

Formation

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

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

Coesite, Quartz, Sand

Olivine, Plagioclase, Pyroxene

Compound Content

Fe, Iron(III) Oxide, Silicon Dioxide

Aluminium Oxide, MgO, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering

Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion

Coastal Erosion, Sea Erosion, Water Erosion

Properties

Physical Properties

Hardness

33-4

1 7

👆🏻

Grain Size

Large and Coarse Grained

Fine to Medium Grained

Fracture

Conchoidal

Streak

White

Bluish Black

Porosity

Very Less Porous

Less Porous

Luster

Earthy

Grainy, Pearly and Vitreous

Compressive Strength

230.00 N/mm²200.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

5.0-5.3-9999

0 8.4

👆🏻

Transparency

Translucent to Opaque

Opaque

Density

0-5.7 g/cm³-9999 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

3.20 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Russia

India, Russia

Africa

Ethiopia, Somalia, South Africa

Europe

Ukraine

Iceland

Others

Deposits in Western Continents

North America

Canada, USA

South America

Brazil

Deposits in Oceania Continent

Australia

Western Australia

All about Jaspillite and Adakite Properties

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