Definition
Diatomite is a fine-grained sedimentary rock which is formed from consolidated diatomaceous earth
  
Mylonite is a metamorphic rock formed by ductile deformation during intense shearing encountered during folding and faulting, a process termed cataclastic or dynamic metamorphism
  
History
  
  
Origin
Germany
  
New Zealand
  
Discoverer
Unknown
  
Unknown
  
Etymology
From diatom + -ite1
  
From Greek mulōn mill + -ite
  
Class
Sedimentary Rocks
  
Metamorphic Rocks
  
Sub-Class
Durable Rock, Soft Rock
  
Durable Rock, Medium Hardness Rock
  
Family
  
  
Group
Not Applicable
  
Not Applicable
  
Other Categories
Fine Grained Rock, Opaque Rock
  
Fine Grained Rock, Opaque Rock
  
Texture
Clastic or Non-Clastic
  
Foliated
  
Color
Grey, White, Yellow
  
Black to Grey
  
Maintenance
Less
  
Less
  
Durability
Non-Durable
  
Durable
  
Water Resistant
No
  
Yes
  
Scratch Resistant
No
  
Yes
  
Stain Resistant
No
  
No
  
Wind Resistant
No
  
No
  
Acid Resistant
No
  
No
  
Appearance
Soft
  
Dull, Banded and Foilated
  
Architecture
  
  
Interior Uses
Decorative Aggregates, Homes, Interior Decoration
  
Decorative Aggregates, Interior Decoration
  
Exterior Uses
Garden Decoration, Paving Stone
  
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration
  
Other Architectural Uses
Curbing
  
Curbing
  
Industry
  
  
Construction Industry
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Source of calcium
  
for Road Aggregate, Landscaping, Roadstone
  
Medical Industry
Not Yet Used
  
Not Yet Used
  
Antiquity Uses
Artifacts
  
Artifacts, Monuments
  
Other Uses
  
  
Commercial Uses
Alumina Refineries, Animal feed filler, As a Feed Additive for Livestock, Creating Artwork, Drawing on blackboards, Fire resistant, Gymnasts, athletes and mountain climbers use for grip, In aquifers, Soil Conditioner, To ignite fire, Used as a filter medium, Used as an insecticide, Whiting material in toothpaste, paint and paper
  
Creating Artwork, Gemstone, Jewelry
  
Types
Not Available
  
Blastomylonites, Ultramylonites and Phyllonites
  
Features
Clasts are smooth to touch, Is one of the oldest rock, Smooth to touch, Very fine grained rock
  
Surfaces are often shiny
  
Archaeological Significance
  
  
Monuments
Not Yet Used
  
Used
  
Famous Monuments
Not Applicable
  
Data Not Available
  
Sculpture
Not Yet Used
  
Used
  
Famous Sculptures
Not Applicable
  
Data Not Available
  
Pictographs
Used
  
Used
  
Petroglyphs
Used
  
Used
  
Figurines
Not Yet Used
  
Used
  
Fossils
Present
  
Absent
  
Formation
Diatomite rock formed from the skeletal remains of single celled plants called diatoms. When diatoms die, their skeletal remains sink to the bottom of lakes and oceans etc. hence forming diatomite deposit.
  
Mylonites are ductilely deformed rocks formed by the accumulation of large shear strain, in ductile fault zones.
  
Composition
  
  
Mineral Content
Calcite, Clay, Clay Minerals, Quartz, Sand
  
Porphyroblasts
  
Compound Content
Ca, NaCl, CaO
  
Aluminium Oxide, Calcium Sulfate, Chromium(III) Oxide, Iron(III) Oxide, Magnesium Carbonate, Silicon Dioxide
  
Transformation
  
  
Metamorphism
No
  
No
  
Types of Metamorphism
Not Applicable
  
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, Coastal Erosion, Wind Erosion
  
Chemical Erosion, Sea Erosion, Wind Erosion
  
Physical Properties
  
  
Hardness
1
  
3-4
  
Grain Size
Very fine-grained
  
Fine Grained
  
Fracture
Not Available
  
Conchoidal
  
Streak
White
  
White
  
Porosity
Highly Porous
  
Highly Porous
  
Luster
Dull
  
Shiny
  
Compressive Strength
Not Available
  
Cleavage
Non-Existent
  
Conchoidal
  
Toughness
1
  
Not Available
  
Specific Gravity
2.3-2.4
  
2.97-3.05
  
Transparency
Opaque
  
Opaque
  
Density
2.49-2.51 g/cm3
  
2.6-4.8 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
0.90 kJ/Kg K
  
12
1.50 kJ/Kg K
  
3
Resistance
Heat Resistant
  
Heat Resistant, Impact Resistant, Pressure Resistant
  
Deposits in Eastern Continents
  
  
Asia
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
  
China, India, Indonesia, Saudi Arabia, South Korea
  
Africa
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
  
Eritrea, Ethiopia, Ghana, South Africa, Western Africa
  
Europe
England, France, Germany, Spain, United Kingdom
  
England, Finland, France, Germany, Great Britain, Greece, United Kingdom
  
Others
Not Yet Found
  
Not Yet Found
  
Deposits in Western Continents
  
  
North America
Canada, USA
  
USA
  
South America
Colombia
  
Not Yet Found
  
Deposits in Oceania Continent
  
  
Australia
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula
  
Central Australia, Western Australia
  
Diatomite vs Mylonite 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. Diatomite vs Mylonite characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Diatomite and Properties of Mylonite. Learn more about Diatomite vs Mylonite in the next section. The interior uses of Diatomite include Decorative aggregates, Homes and Interior decoration whereas the interior uses of Mylonite include Decorative aggregates and Interior decoration. Due to some exceptional properties of Diatomite and Mylonite, they have various applications in construction industry. The uses of Diatomite in construction industry include As dimension stone, Cement manufacture, Construction aggregate, For road aggregate, Landscaping, Making natural cement, Source of calcium and that of Mylonite include For road aggregate, Landscaping, Roadstone.
More about Diatomite and Mylonite
Here you can know more about Diatomite and Mylonite. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Diatomite and Mylonite consists of mineral content and compound content. The mineral content of Diatomite includes Calcite, Clay, Clay Minerals, Quartz, Sand and mineral content of Mylonite includes Porphyroblasts. You can also check out the list of all Sedimentary Rocks. When we have to compare Diatomite vs Mylonite, the texture, color and appearance plays an important role in determining the type of rock. Diatomite is available in grey, white, yellow colors whereas, Mylonite is available in black to grey colors. Appearance of Diatomite is Soft and that of Mylonite is Dull, Banded and Foilated. Properties of rock is another aspect for Diatomite vs Mylonite. The hardness of Diatomite is 1 and that of Mylonite is 3-4. The types of Diatomite are Not Available whereas types of Mylonite are Blastomylonites, Ultramylonites and Phyllonites. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Diatomite and Mylonite is white. The specific heat capacity of Diatomite is 0.90 kJ/Kg K and that of Mylonite is 1.50 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Diatomite is heat resistant whereas Mylonite is heat resistant, impact resistant, pressure resistant.