Definition
Peridotite is a dense, coarse-grained plutonic is the main constituent of the earth's mantle
  
Shale is a fine-grained sedimentary rock which is formed by the compaction of silt and clay-size mineral particles
  
History
  
  
Origin
Pike County, U.S
  
Unknown
  
Discoverer
Unknown
  
Unknown
  
Etymology
From French, from peridot + -ite
  
From German Schalstein laminated limestone, and Schalgebirge layer of stone in stratified rock. From Old English scealu in its base sense of- thing that divides or separate,
  
Class
Igneous Rocks
  
Sedimentary Rocks
  
Sub-Class
Durable Rock, Medium Hardness Rock
  
Durable Rock, Medium Hardness Rock
  
Family
  
  
Group
Plutonic
  
Not Applicable
  
Other Categories
Coarse Grained Rock, Opaque Rock
  
Fine Grained Rock, Opaque Rock
  
Texture
Phaneritic
  
Clastic, Splintery
  
Color
Dark Greenish - Grey
  
Black, Brown, Buff, Green, Grey, Red, Yellow
  
Maintenance
Less
  
More
  
Durability
Durable
  
Durable
  
Water Resistant
Yes
  
No
  
Scratch Resistant
Yes
  
No
  
Stain Resistant
No
  
No
  
Wind Resistant
No
  
No
  
Acid Resistant
No
  
No
  
Appearance
Rough and Shiny
  
Muddy
  
Architecture
  
  
Interior Uses
Decorative Aggregates, Interior Decoration
  
Decorative Aggregates, Homes, Interior Decoration
  
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration
  
As Building Stone, As Facing Stone, Office Buildings
  
Other Architectural Uses
Curbing
  
Curbing
  
Industry
  
  
Construction Industry
As Dimension Stone, Cobblestones
  
Cement Manufacture, Construction Aggregate, for Road Aggregate, Making natural cement, Raw material for the manufacture of mortar
  
Medical Industry
Not Yet Used
  
Not Yet Used
  
Antiquity Uses
Monuments, Sculpture, Small Figurines
  
Artifacts, Sculpture
  
Other Uses
  
  
Commercial Uses
Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds
  
Creating Artwork, Pottery
  
Types
Dunite, Wehrlite, Harzburgite, Lherzolite and Pyrolite
  
Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale
  
Features
Constitutes upper part of the Earth's mantle, Generally rough to touch, Host rock for Diamond, Is one of the oldest rock
  
Easily splits into thin plates, Generally rough to touch, Very fine grained rock
  
Archaeological Significance
  
  
Monuments
Used
  
Used
  
Famous Monuments
Data Not Available
  
Jantar Mantar in India
  
Sculpture
Used
  
Used
  
Famous Sculptures
Data Not Available
  
Data Not Available
  
Pictographs
Used
  
Used
  
Petroglyphs
Used
  
Used
  
Figurines
Used
  
Used
  
Fossils
Absent
  
Present
  
Formation
Peridotites can be formed in two ways: as mantle rocks formed during the accretion and differentiation of the Earth or as cumulate rocks formed by precipitation of olivine and pyroxenes from basaltic magmas.
  
Shale forms when very fine-grained clay particles are deposited in water which settle at the bottom of water bodies. They are later compacted hence forming shale.
  
Composition
  
  
Mineral Content
Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene
  
Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides
  
Compound Content
Ca, Fe, Mg, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide
  
Ca, Fe, Mg, Silicon Dioxide, Sodium
  
Transformation
  
  
Metamorphism
Yes
  
No
  
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
  
Not Applicable
  
Weathering
Yes
  
Yes
  
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
  
Biological Weathering, Chemical Weathering, Mechanical Weathering
  
Erosion
Yes
  
Yes
  
Types of Erosion
Chemical Erosion
  
Chemical Erosion, Coastal Erosion, Glacier Erosion
  
Physical Properties
  
  
Hardness
5.5-6
  
3
  
Grain Size
Coarse Grained
  
Very fine-grained
  
Fracture
Irregular
  
Not Available
  
Streak
White
  
White
  
Porosity
Less Porous
  
Highly Porous
  
Luster
Shiny
  
Dull
  
Compressive Strength
107.55 N/mm2
  
19
95.00 N/mm2
  
20
Cleavage
Imperfect
  
Slaty
  
Toughness
2.1
  
2.6
  
Specific Gravity
3-3.01
  
2.2-2.8
  
Transparency
Translucent to Opaque
  
Opaque
  
Density
3.1-3.4 g/cm3
  
2.4-2.8 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
1.26 kJ/Kg K
  
5
0.39 kJ/Kg K
  
23
Resistance
Heat Resistant, Pressure Resistant, Wear Resistant
  
Heat Resistant, Impact Resistant
  
Deposits in Eastern Continents
  
  
Asia
China, India, Indonesia, Kazakhstan, Russia, South Korea, Thailand, Turkey
  
Bangladesh, China, India, Russia
  
Africa
Morocco, South Africa
  
Ethiopia, Kenya, Morocco, South Africa, Tanzania
  
Europe
Finland, France, Georgia, Germany, Great Britain, Italy, Kazakhstan, Netherlands, Norway, Spain, Switzerland, Venezuela
  
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
  
Others
Not Yet Found
  
Not Yet Found
  
Deposits in Western Continents
  
  
North America
Canada, USA
  
USA
  
South America
Brazil
  
Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
  
Deposits in Oceania Continent
  
  
Australia
New Zealand, Western Australia
  
New South Wales, New Zealand, Queensland, Victoria, Western Australia
  
Peridotite vs Shale Characteristics
Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Peridotite vs Shale characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Peridotite and Properties of Shale. Learn more about Peridotite vs Shale in the next section. The interior uses of Peridotite include Decorative aggregates and Interior decoration whereas the interior uses of Shale include Decorative aggregates, Homes and Interior decoration. Due to some exceptional properties of Peridotite and Shale, they have various applications in construction industry. The uses of Peridotite in construction industry include As dimension stone, Cobblestones and that of Shale include Cement manufacture, Construction aggregate, For road aggregate, Making natural cement, Raw material for the manufacture of mortar.
More about Peridotite and Shale
Here you can know more about Peridotite and Shale. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Peridotite and Shale consists of mineral content and compound content. The mineral content of Peridotite includes Amphibole, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene and mineral content of Shale includes Albite, Biotite, Calcite, Chert, Chlorite, Dolomite, Hematite, Micas, Muscovite or Illite, Pyrite, Quartz, Silica, Sulfides. You can also check out the list of all Igneous Rocks. When we have to compare Peridotite vs Shale, the texture, color and appearance plays an important role in determining the type of rock. Peridotite is available in dark greenish - grey colors whereas, Shale is available in black, brown, buff, green, grey, red, yellow colors. Appearance of Peridotite is Rough and Shiny and that of Shale is Muddy. Properties of rock is another aspect for Peridotite vs Shale. The hardness of Peridotite is 5.5-6 and that of Shale is 3. The types of Peridotite are Dunite, Wehrlite, Harzburgite, Lherzolite and Pyrolite whereas types of Shale are Red Shale, Black Shale, Green Shale, Grey Shale and Yellow Shale. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Peridotite and Shale is white. The specific heat capacity of Peridotite is 1.26 kJ/Kg K and that of Shale is 0.39 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Peridotite is heat resistant, pressure resistant, wear resistant whereas Shale is heat resistant, impact resistant.