Icelandite

Jasperoid

Icelandite and Jasperoid

Icelandite

Jasperoid

Add ⊕

Definition

Icelandite belongs to volcanic igneous rocks which is rich in iron and belongs to andesite rock

Jasperoid is a rare, peculiar type of metasomatic alteration of rocks

History

Origin

Iceland

USA

Discoverer

Ian S. E. Carmichael

Unknown

Etymology

From its origin place near Cenozoic volcano near the parsonage Þingmúli in East Iceland

From silica, the main mineral content of Jasperoid

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Medium Hardness Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

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

Texture

Aphanitic to Porphyritic

Earthy

Color

Bluish - Grey, Grey, Pink, Yellow

Black, Brown, Green, Grey, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull and Soft

Glassy or Pearly

Uses

Architecture

Interior Uses

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration, Kitchens

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration

Exterior Uses

Office Buildings, Roof Tiles

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

Other Architectural Uses

Curbing

Industry

Construction Industry

Cobblestones, Construction Aggregate, for Road Aggregate

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, Production of Glass and Ceramics, Serves as an Oil and Gas Reservoir rock

Medical Industry

Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts, Jewellery, Sculpture, Small Figurines

Artifacts, Jewellery, Monuments, Sculpture

Other Uses

Commercial Uses

Cemetery Markers, Creating Artwork

An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)

Types

Intermediate volcanic rock

Features

Generally rough to touch, High silica content, Is one of the oldest rock

Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

Formation

Icelandite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.

Jasperoid is a rare and peculiar type of metasomatic alteration of rocks. It is formed by extreme alteration of wall rocks within a shear zone which may occur in sediments, andesites, trachytes and basalts.

Composition

Mineral Content

Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Quartz, Zircon

Clay Minerals, Pyrite, Quartz, Sulfides

Compound Content

Silicon Dioxide

NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering

Erosion

✔ ✘

Types of Erosion

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

Properties

Physical Properties

Hardness

73.5-4

1 7

👆🏻

Grain Size

Very fine-grained

Medium to Fine Coarse Grained

Fracture

Uneven

Conchoidal

Streak

White

Porosity

Less Porous

Luster

Vitreous

Vitreous and Pearly

Compressive Strength

200.00 N/mm²140.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

1.1

Specific Gravity

2.5-2.82.8-3

0 8.4

👆🏻

Transparency

Opaque

Transparent to Translucent

Density

2.11-2.36 g/cm³2.8-2.9 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

2.39 kJ/Kg K0.92 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

India, Indonesia, Japan, Nepal, South Korea

China, India

Africa

Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania

Morocco, Namibia

Europe

Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom

Austria, Italy, Romania, Spain, Switzerland

Others

Deposits in Western Continents

North America

Mexico, USA

South America

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

Brazil, Colombia

Deposits in Oceania Continent

Australia

New South Wales, New Zealand, Western Australia

New South Wales, Queensland, Yorke Peninsula

All about Icelandite and Jasperoid Properties

Know all about Icelandite and Jasperoid properties here. All properties of rocks are important as they define the type of rock and its application. Icelandite belongs to Igneous Rocks while Jasperoid belongs to Sedimentary Rocks.Texture of Icelandite is Aphanitic to Porphyritic whereas that of Jasperoid is Earthy. Icelandite appears Dull and Soft and Jasperoid appears Glassy or Pearly. The luster of Icelandite is vitreous while that of Jasperoid is vitreous and pearly. Icelandite is available in bluish - grey, grey, pink, yellow colors whereas Jasperoid is available in black, brown, green, grey, pink, white colors. The commercial uses of Icelandite are cemetery markers, creating artwork and that of Jasperoid are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo).