Carbonatite

Kenyte

Carbonatite and Kenyte

Carbonatite

Kenyte

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Definition

Carbonatite is intrusive or extrusive igneous rock which is defined by mineralogic composition, consisting of greater than 50 percent carbonate minerals

Kenyte is a variety of porphyritic phonolite or trachyte rock with rhomb shaped phenocrysts of anorthoclase with variable olivine and augite in a glassy matrix

History

Origin

Tanzania

Mount Kenya

Discoverer

Unknown

J. W. Gregory

Etymology

From any intrusive igneous rock, having a majority of carbonate minerals

From the mountain ranges- Mount Kenya and is named by J. W. Gregory in 1900

Class

Igneous Rocks

Sub-Class

Durable Rock, Soft Rock

Durable Rock, Medium Hardness Rock

Family

Group

Plutonic

Other Categories

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

Fine Grained Rock, Opaque Rock

Texture

Granular, Poikiloblastic

Glassy, Granular

Color

Black, Brown, Green, Grey, Pink, White

Brown, Buff, Cream, Green, Grey, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Dull, Banded and Foilated

Banded and Foilated

Uses

Architecture

Interior Uses

Decorative Aggregates, Interior Decoration

Decorative Aggregates, Entryways, Homes, Interior Decoration, Kitchens

Exterior Uses

As Facing Stone, Garden Decoration

As Building Stone, Garden Decoration, Paving Stone

Other Architectural Uses

Curbing

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, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics

Medical Industry

Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts

Artifacts, Monuments, Sculpture

Other Uses

Commercial Uses

An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux

Cemetery Markers, Creating Artwork

Types

Carbonatite

Foidolite

Features

Available in lots of colors, Generally rough to touch, Is one of the oldest rock

Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

Carbonatites are intrusive or extrusive igneous rocks which are defined by mineralogic composition consisting of greater than 50 percent carbonate minerals and are formed due to low degrees of partial melting of rocks.

Kenyte 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.

Composition

Mineral Content

Ancylite, Apatite, Barite, Fluorite, Magnetite, Natrolite, Sodalite

Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite

Compound Content

CaO, Carbon Dioxide, Sodium Oxide

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

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Contact Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Impact Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Biological Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion

Properties

Physical Properties

Hardness

35.5-6

1 7

👆🏻

Grain Size

Medium to Fine Coarse Grained

Fine Grained

Fracture

Conchoidal

Conchoidal to Uneven

Streak

White

White, Greenish White or Grey

Porosity

Less Porous

Highly Porous

Luster

Subvitreous to Dull

Greasy to Dull

Compressive Strength

75.00 N/mm²150.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

Specific Gravity

2.86-2.872.6

0 8.4

👆🏻

Transparency

Opaque

Translucent to Opaque

Density

2.84-2.86 g/cm³2.6 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.51 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Pressure Resistant, Water Resistant

Heat Resistant, Impact Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India, Kazakhstan, Mongolia, Russia, Uzbekistan

Indonesia, Iran, Russia, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Turkmenistan, Vietnam

Africa

Namibia, Nigeria, South Africa

Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa

Europe

Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom

Andorra, Finland, France, Germany, Great Britain, Italy, Norway, Portugal, Spain, Sweden

Others

Greenland

Deposits in Western Continents

North America

Canada, USA

South America

Brazil

Brazil, Chile, Colombia, Uruguay, Venezuela

Deposits in Oceania Continent

Australia

New South Wales, New Zealand

New Zealand, Queensland, South Australia, Tasmania, Western Australia

All about Carbonatite and Kenyte Properties

Know all about Carbonatite and Kenyte properties here. All properties of rocks are important as they define the type of rock and its application. Carbonatite and Kenyte belong to Igneous Rocks.Texture of Carbonatite is Granular, Poikiloblastic whereas that of Kenyte is Glassy, Granular. Carbonatite appears Dull, Banded and Foilated and Kenyte appears Banded and Foilated. The luster of Carbonatite is subvitreous to dull while that of Kenyte is greasy to dull. Carbonatite is available in black, brown, green, grey, pink, white colors whereas Kenyte is available in brown, buff, cream, green, grey, pink, white colors. The commercial uses of Carbonatite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux and that of Kenyte are cemetery markers, creating artwork.