Gabbro and Marl

Gabbro

Marl

Marl and Gabbro

Definition

Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt

Marl is an unconsolidated sedimentary rock consisting of clay and lime

History

Origin

Germany

Unknown

Discoverer

Christian Leopold von Buch

Unknown

Etymology

From Latin glaber bare, smooth, bald

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

Plutonic

Not Applicable

Other Categories

Coarse Grained Rock, Opaque Rock

Fine Grained Rock, Opaque Rock

Texture

Phaneritic

Earthy

Color

Dark Grey to Black

Beige, Brown, Green, Grey, White

Maintenance

Less

Durability

Durable

Water Resistant

Yes

Scratch Resistant

Yes

Stain Resistant

Yes

Wind Resistant

Yes

Acid Resistant

Yes

Appearance

Veined and Shiny

Rough and Dull

Uses

Architecture

Interior Uses

Countertops, Decorative Aggregates, Homes, Interior Decoration

Decorative Aggregates, Floor Tiles

Exterior Uses

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

As Building Stone, Roof Tiles

Other Architectural Uses

Curbing

Industry

Construction Industry

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate

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

Medical Industry

Not Yet Used

Antiquity Uses

Artifacts, Monuments, Sculpture

Artifacts, Jewellery, Sculpture, Small Figurines

Other Uses

Commercial Uses

Cemetery Markers, Commemorative Tablets, Laboratory bench tops, Jewelry, Sea Defence, Tombstones

Creating Artwork, Soil Conditioner

Types

Not Available

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

Smooth to touch

Generally rough to touch, Is one of the oldest rock, Splintery, Very fine grained rock

Archaeological Significance

Monuments

Used

Not Yet Used

Famous Monuments

Data Not Available

Not Applicable

Sculpture

Used

Famous Sculptures

Data Not Available

Pictographs

Not Used

Used

Petroglyphs

Not Used

Used

Figurines

Used

Fossils

Absent

Present

Formation

Gabbro, a mafic rock, forms due to cooling and crystallization of magma underneath Earth's surface.

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, Olivine, Plagioclase, Pyroxene

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

Compound Content

Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide

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

Transformation

Metamorphism

Yes

Types of Metamorphism

Impact Metamorphism

Not Applicable

Weathering

Yes

Types of Weathering

Chemical Weathering

Biological Weathering, Chemical Weathering

Erosion

Yes

Types of Erosion

Coastal Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Properties

Physical Properties

Hardness

2-3

Grain Size

Coarse Grained

Very fine-grained

Fracture

Conchoidal

Streak

Black

White

Porosity

Highly Porous

Luster

Not Available

Dull

Compressive Strength

225.00 N/mm²

Not Available

Cleavage

Not Available

Toughness

1.6

2.6

Specific Gravity

2.86-2.87

2.2-2.8

Transparency

Opaque

Density

2.7-3.3 g/cm³

2.4-2.8 g/cm³

Thermal Properties

Resistance

Impact Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Impact Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Russia

India, Pakistan, Russia

Africa

South Africa

Ethiopia, Kenya, Morocco, South Africa

Europe

Germany, Greece, Italy, Scotland, Turkey

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

Others

Greenland

Not Yet Found

Deposits in Western Continents

North America

Canada, USA

USA

South America

Brazil, Colombia, Venezuela

Colombia, Ecuador, Peru

Deposits in Oceania Continent

Australia

New Zealand, Queensland

New South Wales, Victoria, Western Australia

Summary >>

<< Reserves

All about Gabbro and Marl Properties

Know all about Gabbro and Marl properties here. All properties of rocks are important as they define the type of rock and its application. Gabbro belongs to Igneous Rocks while Marl belongs to Sedimentary Rocks.Texture of Gabbro is Phaneritic whereas that of Marl is Earthy. Gabbro appears Veined and Shiny and Marl appears Rough and Dull. The luster of Gabbro is not available while that of Marl is dull. Gabbro is available in dark grey to black colors whereas Marl is available in beige, brown, green, grey, white colors. The commercial uses of Gabbro are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Marl are creating artwork, soil conditioner.