Basanite

Andesite

Basanite and Andesite

Basanite

Andesite

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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

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

History

Origin

North America

Discoverer

Unknown

Theodor von Gümbel

Etymology

From Latin basanites + -ite

From Andes mountains, where it is found in abundance

Class

Igneous Rocks

Sub-Class

Durable Rock, Hard Rock

Family

Group

Volcanic

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Aphanitic to Porphyritic

Color

Black, Brown, Green, Grey, Red, White

Bluish - Grey, Grey, Pink, Yellow

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy or Pearly

Dull and Soft

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes

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

Exterior Uses

As Building Stone, Garden Decoration, Office Buildings

Office Buildings, Roof Tiles

Other Architectural Uses

Whetstones

Curbing

Industry

Construction Industry

Arrowheads, Construction Aggregate, Cutting Tool, Spear Points

Cobblestones, Construction Aggregate, for Road Aggregate

Medical Industry

Antiquity Uses

Artifacts, Monuments

Artifacts, Monuments, Sculpture, Small Figurines

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

Commemorative Tablets, Creating Artwork

Types

Nepheline-Basanite, Analcite-Basanite and Leucite-Basanite

Icelandite

Features

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

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

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

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

Composition

Mineral Content

Augite, Feldspar, Ilmenite, Olivine, Plagioclase

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

Compound Content

Potassium Oxide, Sodium Oxide, Silicon Dioxide

Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional 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, Coastal Erosion, Glacier Erosion

Properties

Physical Properties

Hardness

1 7

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Grain Size

Fine Grained

Very fine-grained

Fracture

Uneven, Splintery or Conchoidal

Uneven

Streak

White

Porosity

Highly Porous

Less Porous

Luster

Waxy and Dull

Vitreous

Compressive Strength

100.00 N/mm²225.00 N/mm²

0.15 450

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Cleavage

Toughness

1.5

1.1

Specific Gravity

2.5-2.82.5-2.8

0 8.4

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Transparency

Translucent to Opaque

Opaque

Density

2.7 g/cm³2.11-2.36 g/cm³

0 1400

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Thermal Properties

Specific Heat Capacity

0.74 kJ/Kg K2.39 kJ/Kg K

0.14 3.2

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Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Indonesia, Japan, Nepal, South Korea

Africa

Uganda

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

Europe

Germany, Hungary, Italy, Spain

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

Others

Greenland, Mid-Atlantic Ridge

Deposits in Western Continents

North America

USA

Mexico, USA

South America

Bolivia, Brazil

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

Deposits in Oceania Continent

Australia

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

New South Wales, New Zealand, Western Australia

All about Basanite and Andesite Properties

Know all about Basanite and Andesite properties here. All properties of rocks are important as they define the type of rock and its application. Basanite and Andesite belong to Igneous Rocks.Texture of Basanite is Aphanitic to Porphyritic whereas that of Andesite is Aphanitic to Porphyritic. Basanite appears Glassy or Pearly and Andesite appears Dull and Soft. The luster of Basanite is waxy and dull while that of Andesite is vitreous. Basanite is available in black, brown, green, grey, red, white colors whereas Andesite is available in bluish - grey, grey, pink, yellow 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 Andesite are commemorative tablets, creating artwork.