Lherzolite

Andesite

Lherzolite and Andesite

Lherzolite

Andesite

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Definition

Lherzolite is a type of ultramafic igneous rock which contains essential olivine and clinopyroxene and orthopyroxene in equal proportions

Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava

History

Origin

France

North America

Discoverer

Unknown

Theodor von Gümbel

Etymology

From the Lherz Massif, an alpine peridotite complex, at Étang de Lers, near Massat in the French Pyrenees; Lherz is the archaic spelling of this location

From Andes mountains, where it is found in abundance

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Plutonic

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Grenue

Aphanitic to Porphyritic

Color

Black, Dark Greenish - Grey, Green, Pink, Purple

Bluish - Grey, Grey, Pink, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy, Vesicular and Foilated

Dull and Soft

Uses

Architecture

Interior Uses

Decorative Aggregates, Entryways, Homes, Interior Decoration

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

Exterior Uses

As Building Stone, As Facing Stone, Office Buildings

Office Buildings, Roof Tiles

Other Architectural Uses

Curbing

Industry

Construction Industry

Landscaping, Manufacture of Magnesium and Dolomite Refractories, Used for flooring, stair treads, borders and window sills.

Cobblestones, Construction Aggregate, for Road Aggregate

Medical Industry

Antiquity Uses

Artifacts, Sculpture

Artifacts, Monuments, Sculpture, Small Figurines

Other Uses

Commercial Uses

As armour rock for sea walls, Source of Magnesia (MgO), Used in aquariums

Commemorative Tablets, Creating Artwork

Types

Garnet Lherzolite

Icelandite

Features

Host Rock for Lead

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

Archaeological Significance

Monuments

Famous Monuments

Middle of the Earth in Ecuador

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

Lherzolite 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.

Andesite is a fine-grained igneous rock that forms when the magma is erupted onto the surface and is crystallized quickly.

Composition

Mineral Content

Harzburgite, Olivine, Pyroxene, Pyrrhotite

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

Compound Content

CaO, Cr, Chromium(III) Oxide, MgO

Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism

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

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

6.57

1 7

👆🏻

Grain Size

Fine Grained

Very fine-grained

Fracture

Conchoidal

Uneven

Streak

White

Porosity

Less Porous

Luster

Subvitreous to Dull

Vitreous

Compressive Strength

290.00 N/mm²225.00 N/mm²

0.15 450

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Cleavage

Perfect

Toughness

2.7

1.1

Specific Gravity

2.862.5-2.8

0 8.4

👆🏻

Transparency

Opaque

Density

2.8-2.9 g/cm³2.11-2.36 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.95 kJ/Kg K2.39 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Russia, South Korea

India, Indonesia, Japan, Nepal, South Korea

Africa

Western Africa

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

Europe

United Kingdom

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

Others

Deposits in Western Continents

North America

USA

Mexico, USA

South America

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

Deposits in Oceania Continent

Australia

Central Australia, Western Australia

New South Wales, New Zealand, Western Australia

All about Lherzolite and Andesite Properties

Know all about Lherzolite and Andesite properties here. All properties of rocks are important as they define the type of rock and its application. Lherzolite and Andesite belong to Igneous Rocks.Texture of Lherzolite is Grenue whereas that of Andesite is Aphanitic to Porphyritic. Lherzolite appears Glassy, Vesicular and Foilated and Andesite appears Dull and Soft. The luster of Lherzolite is subvitreous to dull while that of Andesite is vitreous. Lherzolite is available in black, dark greenish - grey, green, pink, purple colors whereas Andesite is available in bluish - grey, grey, pink, yellow colors. The commercial uses of Lherzolite are as armour rock for sea walls, source of magnesia (mgo), used in aquariums and that of Andesite are commemorative tablets, creating artwork.