Basanite

Lherzolite

Basanite and Lherzolite

Basanite

Lherzolite

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Definition

Basanite is a black basaltic rock which mainly contains plagioclase, augite, olivine and nepheline and is formerly used as a touchstone

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

History

Origin

France

Discoverer

Unknown

Etymology

From Latin basanites + -ite

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

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Plutonic

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Aphanitic to Porphyritic

Grenue

Color

Black, Brown, Green, Grey, Red, White

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

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy or Pearly

Glassy, Vesicular and Foilated

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes

Decorative Aggregates, Entryways, Homes, Interior Decoration

Exterior Uses

As Building Stone, Garden Decoration, Office Buildings

As Building Stone, As Facing Stone, Office Buildings

Other Architectural Uses

Whetstones

Curbing

Industry

Construction Industry

Arrowheads, Construction Aggregate, Cutting Tool, Spear Points

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

Medical Industry

Antiquity Uses

Artifacts, Monuments

Artifacts, Sculpture

Other Uses

Commercial Uses

As a touchstone, Creating Artwork, Gemstone, In fire-starting tools, Manufacture of tools, Metallurgical Flux, Jewelry, To ignite fire, Used in flintlock firearms

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

Types

Nepheline-Basanite, Analcite-Basanite and Leucite-Basanite

Garnet Lherzolite

Features

Clasts are smooth to touch, Easily splits into thin plates, Has High structural resistance against erosion and climate, Used as a touchstone

Host Rock for Lead

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

Basanite is a fine-grained, hard rock that forms when bits of lava shoot out of volcanoes.

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.

Composition

Mineral Content

Augite, Feldspar, Ilmenite, Olivine, Plagioclase

Harzburgite, Olivine, Pyroxene, Pyrrhotite

Compound Content

Potassium Oxide, Sodium Oxide, Silicon Dioxide

CaO, Cr, Chromium(III) Oxide, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Cataclastic Metamorphism, Contact Metamorphism

Weathering

✔ ✘

Types of Weathering

Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

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

Chemical Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

76.5

1 7

👆🏻

Grain Size

Fine Grained

Fracture

Uneven, Splintery or Conchoidal

Conchoidal

Streak

White

Porosity

Highly Porous

Less Porous

Luster

Waxy and Dull

Subvitreous to Dull

Compressive Strength

100.00 N/mm²290.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Toughness

1.5

2.7

Specific Gravity

2.5-2.82.86

0 8.4

👆🏻

Transparency

Translucent to Opaque

Opaque

Density

2.7 g/cm³2.8-2.9 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.74 kJ/Kg K0.95 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Russia, South Korea

Africa

Uganda

Western Africa

Europe

Germany, Hungary, Italy, Spain

United Kingdom

Others

Greenland, Mid-Atlantic Ridge

Deposits in Western Continents

North America

USA

South America

Bolivia, Brazil

Deposits in Oceania Continent

Australia

New South Wales, New Zealand, Queensland, South Australia, Western Australia

Central Australia, Western Australia

All about Basanite and Lherzolite Properties

Know all about Basanite and Lherzolite properties here. All properties of rocks are important as they define the type of rock and its application. Basanite and Lherzolite belong to Igneous Rocks.Texture of Basanite is Aphanitic to Porphyritic whereas that of Lherzolite is Grenue. Basanite appears Glassy or Pearly and Lherzolite appears Glassy, Vesicular and Foilated. The luster of Basanite is waxy and dull while that of Lherzolite is subvitreous to dull. Basanite is available in black, brown, green, grey, red, white colors whereas Lherzolite is available in black, dark greenish - grey, green, pink, purple colors. The commercial uses of Basanite are as a touchstone, creating artwork, gemstone, in fire-starting tools, manufacture of tools, metallurgical flux, jewelry, to ignite fire, used in flintlock firearms and that of Lherzolite are as armour rock for sea walls, source of magnesia (mgo), used in aquariums.