Dolomite

Phyllite

Dolomite and Phyllite

Dolomite

Phyllite

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Definition

Dolomite is a sedimentary rock containing more than 50 percent of the mineral dolomite by weight

Phyllite is a fine-grained metamorphic rock with a well-developed laminar structure, and is intermediate between slate and schist rocks

History

Origin

Southern Alps, France

Discoverer

Dolomieu

Unknown

Etymology

From French, from the name of Dolomieu (1750–1801), the French geologist who discovered the rock

From Greek phullon leaf + -ite1

Class

Sedimentary Rocks

Metamorphic Rocks

Sub-Class

Durable Rock, Medium Hardness Rock

Durable Rock, Soft Rock

Family

Group

Other Categories

Coarse Grained Rock, Fine Grained Rock, Medium Grained Rock, Opaque Rock

Texture

Earthy

Phyllitic Sheen, Slaty

Color

Black, Brown, Green, Grey, Pink, White

Black to Grey, Light Greenish Grey

Maintenance

Less

Durability

Durable

Water Resistant

✔ ✘

Scratch Resistant

✔ ✘

Stain Resistant

✔ ✘

Wind Resistant

✔ ✘

Acid Resistant

✔ ✘

Appearance

Glassy or Pearly

Crinkled or Wavy

Uses

Architecture

Interior Uses

Decorative Aggregates, Homes, Interior Decoration

Decorative Aggregates, Floor Tiles, Homes, Interior Decoration

Exterior Uses

Garden Decoration, Office Buildings

As Building Stone, As Facing Stone, Garden Decoration

Other Architectural Uses

Curbing

Industry

Construction Industry

As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics, Serves as an Oil and Gas Reservoir rock

As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate, Raw material for the manufacture of mortar, Roadstone

Medical Industry

Taken as a Supplement for Calcium or Magnesium

Antiquity Uses

Artifacts, Jewellery, Monuments, Sculpture, Small Figurines

Artifacts, Sculpture

Other Uses

Commercial Uses

An Oil and Gas Reservoir, As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Production of Lime, Soil Conditioner, Source of Magnesia (MgO)

Cemetery Markers, Commemorative Tablets, Creating Artwork, Writing Slates

Types

Boninite and Jasperoid

Phyllite

Features

Host Rock for Lead, Traps for subsurface fluids like Oil and Natural Gas., Zinc and Copper Deposits

Easily splits into thin plates, Is one of the oldest rock, Surfaces are often shiny

Archaeological Significance

Monuments

Famous Monuments

Sculpture

Famous Sculptures

Pictographs

Petroglyphs

Figurines

Fossils

Present

Absent

Formation

Dolomite rocks are originally deposited as calcite or aragonite rich limestone, but during diagenesis process, the calcite or aragonite is transformed into dolomite.

Phyllite is a metamorphic rock which is formed by regional metamorphism of argillaceous sediments since their cleavage arose due to deviatoric stress.

Composition

Mineral Content

Clay Minerals, Pyrite, Quartz, Sulfides

Albite, Alusite, Amphibole, Apatite, Biotite, Chlorite, Epidote, Feldspar, Garnet, Graphite, Hornblade, Kyanite, Micas, Muscovite or Illite, Porphyroblasts, Quartz, Sillimanite, Staurolite, Talc, Zircon

Compound Content

NaCl, CaO, Carbon Dioxide, Magnesium Carbonate, MgO

CaO, Carbon Dioxide, MgO

Transformation

Metamorphism

✔ ✘

Types of Metamorphism

Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism

Weathering

✔ ✘

Types of Weathering

Biological Weathering, Chemical Weathering, Mechanical Weathering

Erosion

✔ ✘

Types of Erosion

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

Properties

Physical Properties

Hardness

3.5-41-2

1 7

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Grain Size

Medium to Fine Coarse Grained

Fracture

Conchoidal

Streak

White

Porosity

Less Porous

Highly Porous

Luster

Vitreous and Pearly

Phyllitic

Compressive Strength

140.00 N/mm²50.00 N/mm²

0.15 450

👆🏻

Cleavage

Perfect

Crenulation and Pervasive

Toughness

1.2

Specific Gravity

2.8-32.72-2.73

0 8.4

👆🏻

Transparency

Transparent to Translucent

Opaque

Density

2.8-2.9 g/cm³2.18-3.3 g/cm³

0 1400

👆🏻

Thermal Properties

Specific Heat Capacity

0.92 kJ/Kg K0.79 kJ/Kg K

0.14 3.2

👆🏻

Resistance

Heat Resistant, Pressure Resistant, Wear Resistant

Heat Resistant, Pressure Resistant, Water Resistant

Reserves

Deposits in Eastern Continents

Asia

China, India

Afghanistan, Bangladesh, Bhutan, China, India, Japan, Kazakhstan, Malaysia, Pakistan, Russia, Thailand, Turkey, Vietnam

Africa

Morocco, Namibia

Egypt, Ethiopia, Morocco, Nigeria, South Africa

Europe

Austria, Italy, Romania, Spain, Switzerland

Austria, England, France, Georgia, Germany, Italy, Liechtenstein, Monaco, Norway, Slovenia, Spain, Sweden, Switzerland

Others

Deposits in Western Continents

North America

Mexico, USA

Canada, Costa Rica, Cuba, Mexico, Panama, USA

South America

Brazil, Colombia

Brazil, Colombia, Guyana

Deposits in Oceania Continent

Australia

New South Wales, Queensland, Yorke Peninsula

New South Wales, New Zealand, Queensland

All about Dolomite and Phyllite Properties

Know all about Dolomite and Phyllite properties here. All properties of rocks are important as they define the type of rock and its application. Dolomite belongs to Sedimentary Rocks while Phyllite belongs to Metamorphic Rocks.Texture of Dolomite is Earthy whereas that of Phyllite is Phyllitic Sheen, Slaty. Dolomite appears Glassy or Pearly and Phyllite appears Crinkled or Wavy. The luster of Dolomite is vitreous and pearly while that of Phyllite is phyllitic. Dolomite is available in black, brown, green, grey, pink, white colors whereas Phyllite is available in black to grey, light greenish grey colors. The commercial uses of Dolomite are an oil and gas reservoir, as a feed additive for livestock, gemstone, metallurgical flux, production of lime, soil conditioner, source of magnesia (mgo) and that of Phyllite are cemetery markers, commemorative tablets, creating artwork, writing slates.