Marl

Anorthosite

Marl and Anorthosite

Marl

Anorthosite

Add ⊕

Definition

Marl is an unconsolidated sedimentary rock consisting of clay and lime

Anorthosite is a granular igneous rock composed largely of labradorite or plagioclase

History

Origin

Discoverer

William Smith

Unknown

Etymology

From Old French marle, from Late Latin marglia

From French anorthose plagioclase + -ite1

Class

Sedimentary Rocks

Igneous Rocks

Sub-Class

Durable Rock, Soft Rock

Durable Rock, Medium Hardness Rock

Family

Group

Plutonic

Other Categories

Fine Grained Rock, Opaque Rock

Coarse Grained Rock, Opaque Rock

Texture

Earthy

Foliated, Glassy

Color

Beige, Brown, Green, Grey, White

Black, Bluish - Grey, Brown, Green, Grey, Light Greenish Grey, Pink, White

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Rough and Dull

Layered, Banded, Veined and Shiny

Uses

Architecture

Interior Uses

Decorative Aggregates, Floor Tiles

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration

Exterior Uses

As Building Stone, Roof Tiles

As Building Stone, As Facing Stone, Garden Decoration

Other Architectural Uses

Curbing

Industry

Construction Industry

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

As Dimension Stone, Cement Manufacture, for Road Aggregate

Medical Industry

Antiquity Uses

Artifacts, Jewellery, Sculpture, Small Figurines

Artifacts, Sculpture, Small Figurines

Other Uses

Commercial Uses

Creating Artwork, Soil Conditioner

Creating Artwork, Curling

Types

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

Proterozoic Anorthosite and Archean Anorthosite

Features

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

Generally rough to touch, Is one of the oldest rock

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

Absent

Formation

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.

Anorthosite is a phaneritic, intrusive igneous rock which is characterized by a predominance of plagioclase feldspar which is almost 90–100%, and a minimal mafic component.

Composition

Mineral Content

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

Amphibole, Clinopyroxene, Ilmenite, Magnetite, Olivine, Orthopyroxene

Compound Content

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

Ca, CaO, Chromium(III) Oxide, MgO, Sulfur Trioxide

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Cataclastic Metamorphism, Contact Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering

Biological Weathering

Erosion

✔ ✘

Types of Erosion

Chemical Erosion, Coastal Erosion, Water Erosion, Wind Erosion

Chemical Erosion, Wind Erosion

Properties

Physical Properties

Hardness

2-35-6

1 7

👆🏻

Grain Size

Very fine-grained

Coarse Grained

Fracture

Conchoidal

Irregular

Streak

White

Porosity

Highly Porous

Less Porous

Luster

Dull

Pearly to Subvitreous

Compressive Strength

30.00 N/mm²180.00 N/mm²

0.15 450

👆🏻

Cleavage

Toughness

2.6

Specific Gravity

2.2-2.82.62-2.82

0 8.4

👆🏻

Transparency

Opaque

Translucent

Density

2.4-2.8 g/cm³2.7-4 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.80 kJ/Kg K0.84 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Impact Resistant

Heat Resistant, Impact Resistant, Pressure Resistant, Scratch Resistant, Wear Resistant

Reserves

Deposits in Eastern Continents

Asia

India, Pakistan, Russia

Africa

Ethiopia, Kenya, Morocco, South Africa

Europe

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

Bulgaria, France, Germany, Greece, Hungary, Italy, Latvia, Lithuania, Malta, Poland, Portugal, Romania, Slovenia, Spain, Sweden, The Czech Republic

Others

Deposits in Western Continents

North America

USA

Canada

South America

Colombia, Ecuador, Peru

Bolivia, Colombia

Deposits in Oceania Continent

Australia

New South Wales, Victoria, Western Australia

Central Australia, South Australia, Western Australia

All about Marl and Anorthosite Properties

Know all about Marl and Anorthosite properties here. All properties of rocks are important as they define the type of rock and its application. Marl belongs to Sedimentary Rocks while Anorthosite belongs to Igneous Rocks.Texture of Marl is Earthy whereas that of Anorthosite is Foliated, Glassy. Marl appears Rough and Dull and Anorthosite appears Layered, Banded, Veined and Shiny. The luster of Marl is dull while that of Anorthosite is pearly to subvitreous. Marl is available in beige, brown, green, grey, white colors whereas Anorthosite is available in black, bluish - grey, brown, green, grey, light greenish grey, pink, white colors. The commercial uses of Marl are creating artwork, soil conditioner and that of Anorthosite are creating artwork, curling.