Basanite

Marl

Basanite and Marl

Basanite

Marl

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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

Marl is an unconsolidated sedimentary rock consisting of clay and lime

History

Origin

Discoverer

Unknown

William Smith

Etymology

From Latin basanites + -ite

From Old French marle, from Late Latin marglia

Class

Igneous Rocks

Sedimentary Rocks

Sub-Class

Durable Rock, Hard Rock

Durable Rock, Soft Rock

Family

Group

Other Categories

Fine Grained Rock, Opaque Rock

Texture

Aphanitic to Porphyritic

Earthy

Color

Black, Brown, Green, Grey, Red, White

Beige, Brown, Green, Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy or Pearly

Rough and Dull

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes

Decorative Aggregates, Floor Tiles

Exterior Uses

As Building Stone, Garden Decoration, Office Buildings

As Building Stone, Roof Tiles

Other Architectural Uses

Whetstones

Curbing

Industry

Construction Industry

Arrowheads, Construction Aggregate, Cutting Tool, Spear Points

Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar

Medical Industry

Antiquity Uses

Artifacts, Monuments

Artifacts, Jewellery, 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

Creating Artwork, Soil Conditioner

Types

Nepheline-Basanite, Analcite-Basanite and Leucite-Basanite

Clay Marl ,Blue Marl, Red Marl, High Bank Marl, Shell Layer Marl, Under Shell Layer Marl, Sand Marl, Green Marl, Grey Marl and Clayey Marl

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, Is one of the oldest rock, Splintery, Very fine grained rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Absent

Present

Formation

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

Marl forms when very fine-grained clay particles are deposited in water which settles at the bottom of water bodies and are compacted by overlying sediment; the water squeezes out and hence forming Marl rock.

Composition

Mineral Content

Augite, Feldspar, Ilmenite, Olivine, Plagioclase

Calcite, Clay, Dolomite, Gypsum, Micas, Pyrite, Quartz

Compound Content

Potassium Oxide, Sodium Oxide, Silicon Dioxide

Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Regional Metamorphism

Weathering

✔ ✘

Types of Weathering

Chemical Weathering, Mechanical Weathering

Biological Weathering, Chemical Weathering

Erosion

✔ ✘

Types of Erosion

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

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

72-3

1 7

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Grain Size

Fine Grained

Very fine-grained

Fracture

Uneven, Splintery or Conchoidal

Conchoidal

Streak

White

Porosity

Highly Porous

Luster

Waxy and Dull

Dull

Compressive Strength

100.00 N/mm²30.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

1.5

2.6

Specific Gravity

2.5-2.82.2-2.8

0 8.4

👆🏻

Transparency

Translucent to Opaque

Opaque

Density

2.7 g/cm³2.4-2.8 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.74 kJ/Kg K0.80 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Pakistan, Russia

Africa

Uganda

Ethiopia, Kenya, Morocco, South Africa

Europe

Germany, Hungary, Italy, Spain

Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland

Others

Greenland, Mid-Atlantic Ridge

Deposits in Western Continents

North America

USA

South America

Bolivia, Brazil

Colombia, Ecuador, Peru

Deposits in Oceania Continent

Australia

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

New South Wales, Victoria, Western Australia

All about Basanite and Marl Properties

Know all about Basanite and Marl properties here. All properties of rocks are important as they define the type of rock and its application. Basanite belongs to Igneous Rocks while Marl belongs to Sedimentary Rocks.Texture of Basanite is Aphanitic to Porphyritic whereas that of Marl is Earthy. Basanite appears Glassy or Pearly and Marl appears Rough and Dull. The luster of Basanite is waxy and dull while that of Marl is dull. Basanite is available in black, brown, green, grey, red, white colors whereas Marl is available in beige, brown, green, grey, white 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 Marl are creating artwork, soil conditioner.