Borolanite

Basanite

Borolanite and Basanite

Borolanite

Basanite

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Definition

Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix

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

History

Origin

Scotland

Discoverer

Unknown

Etymology

From Alkalic Igneous complex near Loch Borralan in northwest Scotland

From Latin basanites + -ite

Class

Igneous Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Hard Rock

Family

Group

Plutonic

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Granular

Aphanitic to Porphyritic

Color

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

Black, Brown, Green, Grey, Red, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Banded and Foilated

Glassy or Pearly

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Flooring, Homes, Interior Decoration

Decorative Aggregates, Homes

Exterior Uses

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

As Building Stone, Garden Decoration, Office Buildings

Other Architectural Uses

Curbing

Whetstones

Industry

Construction Industry

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

Arrowheads, Construction Aggregate, Cutting Tool, Spear Points

Medical Industry

Antiquity Uses

Artifacts

Artifacts, Monuments

Other Uses

Commercial Uses

Cemetery Markers

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

Types

Nepheline-Basanite, Analcite-Basanite and Leucite-Basanite

Features

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

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

Borolanites are formed due to alkaline igneous activities and are generally formed in thick continental crustal areas or in Cordilleran subduction zones.

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

Composition

Mineral Content

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

Augite, Feldspar, Ilmenite, Olivine, Plagioclase

Compound Content

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

Potassium Oxide, Sodium Oxide, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Regional Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

Wind Erosion

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

Properties

Physical Properties

Hardness

5.5-67

1 7

👆🏻

Grain Size

Fine Grained

Fracture

Conchoidal to Uneven

Uneven, Splintery or Conchoidal

Streak

White

Porosity

Less Porous

Highly Porous

Luster

Greasy to Dull

Waxy and Dull

Compressive Strength

150.00 N/mm²100.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

1.5

Specific Gravity

2.62.5-2.8

0 8.4

👆🏻

Transparency

Translucent to Opaque

Density

2.6 g/cm³2.7 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.84 kJ/Kg K0.74 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Wear Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

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

Africa

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

Uganda

Europe

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

Germany, Hungary, Italy, Spain

Others

Greenland

Greenland, Mid-Atlantic Ridge

Deposits in Western Continents

North America

Canada, USA

USA

South America

Brazil, Chile, Colombia, Uruguay, Venezuela

Bolivia, Brazil

Deposits in Oceania Continent

Australia

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

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

All about Borolanite and Basanite Properties

Know all about Borolanite and Basanite properties here. All properties of rocks are important as they define the type of rock and its application. Borolanite and Basanite belong to Igneous Rocks.Texture of Borolanite is Granular whereas that of Basanite is Aphanitic to Porphyritic. Borolanite appears Banded and Foilated and Basanite appears Glassy or Pearly. The luster of Borolanite is greasy to dull while that of Basanite is waxy and dull. Borolanite is available in brown, buff, cream, green, grey, pink, white colors whereas Basanite is available in black, brown, green, grey, red, white colors. The commercial uses of Borolanite are cemetery markers 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.