Harzburgite

Basanite

Harzburgite and Basanite

Harzburgite

Basanite

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Definition

Harzburgite is a plutonic rock of the peridotite group consisting largely of orthopyroxene and olivine

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

History

Origin

Germany

Discoverer

Unknown

Etymology

From the name of a town in Harzburg, Germany

From Latin basanites + -ite

Class

Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

Family

Group

Plutonic

Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Phaneritic

Aphanitic to Porphyritic

Color

Dark Greenish - Grey

Black, Brown, Green, Grey, Red, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Shiny

Glassy or Pearly

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration

Decorative Aggregates, Homes

Exterior Uses

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

As Building Stone, Garden Decoration, Office Buildings

Other Architectural Uses

Curbing

Whetstones

Industry

Construction Industry

As Dimension Stone, Cobblestones

Arrowheads, Construction Aggregate, Cutting Tool, Spear Points

Medical Industry

Antiquity Uses

Artifacts, Monuments, Sculpture, Small Figurines

Artifacts, Monuments

Other Uses

Commercial Uses

Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds

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

Types

Ultramafic rock

Nepheline-Basanite, Analcite-Basanite and Leucite-Basanite

Features

Constitutes upper part of the Earth's mantle, Generally rough to touch, Is one of the oldest rock

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

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Formation

Harzburgite 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.

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

Composition

Mineral Content

Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene

Augite, Feldspar, Ilmenite, Olivine, Plagioclase

Compound Content

Ca, Fe, Mg, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide

Potassium Oxide, Sodium Oxide, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Impact Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Sea Erosion

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

Properties

Physical Properties

Hardness

5.5-67

1 7

👆🏻

Grain Size

Coarse Grained

Fine Grained

Fracture

Irregular

Uneven, Splintery or Conchoidal

Streak

White

Porosity

Less Porous

Highly Porous

Luster

Shiny

Waxy and Dull

Compressive Strength

150.00 N/mm²100.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

2.1

1.5

Specific Gravity

3-3.012.5-2.8

0 8.4

👆🏻

Transparency

Translucent to Opaque

Density

3.1-3.4 g/cm³2.7 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

1.25 kJ/Kg K0.74 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

Japan, Oman

Africa

South Africa

Uganda

Europe

France, Germany, Italy

Germany, Hungary, Italy, Spain

Others

Hawaii Islands, Mid-Atlantic Ridge

Greenland, Mid-Atlantic Ridge

Deposits in Western Continents

North America

Canada, USA

USA

South America

Bolivia, Brazil

Deposits in Oceania Continent

Australia

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

All about Harzburgite and Basanite Properties

Know all about Harzburgite and Basanite properties here. All properties of rocks are important as they define the type of rock and its application. Harzburgite and Basanite belong to Igneous Rocks.Texture of Harzburgite is Phaneritic whereas that of Basanite is Aphanitic to Porphyritic. Harzburgite appears Rough and Shiny and Basanite appears Glassy or Pearly. The luster of Harzburgite is shiny while that of Basanite is waxy and dull. Harzburgite is available in dark greenish - grey colors whereas Basanite is available in black, brown, green, grey, red, white colors. The commercial uses of Harzburgite are creating artwork, gemstone, jewelry, source of chromite, platinum, nickel and garnet, source of diamonds and that 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.