Definition
Breccia is a rock consisting of angular fragments of stones which are cemented by finer calcareous material
  
Argillites are highly compact sedimentary or slightly metamorphosed rocks that consist largely or wholly of particles of clay or silt but lack the fissility of shale or the cleavage characteristic of slate
  
History
  
  
Origin
England
  
Unknown
  
Discoverer
Unknown
  
Unknown
  
Etymology
From Italian, literally gravel, Germanic origin and related to break
  
From Latin Argilla (clay) and -ite in English which became agrilla+ -ite = Argillite
  
Class
Sedimentary Rocks
  
Sedimentary Rocks
  
Sub-Class
Durable Rock, Hard Rock
  
Durable Rock, Soft Rock
  
Family
  
  
Group
Not Applicable
  
Not Applicable
  
Other Categories
Coarse Grained Rock, Medium Grained Rock, Opaque Rock
  
Fine Grained Rock, Opaque Rock
  
Texture
Brecciated, Clastic
  
Clastic, Polished
  
Color
Beige, Black, Blue, Brown, Buff, Green, Grey, Orange, Pink, Purple, Red, Rust, White, Yellow
  
Dark Grey to Black, Pink, Red, White
  
Maintenance
Less
  
Less
  
Durability
Durable
  
Durable
  
Water Resistant
Yes
  
No
  
Scratch Resistant
Yes
  
Yes
  
Stain Resistant
Yes
  
Yes
  
Wind Resistant
Yes
  
Yes
  
Acid Resistant
No
  
Yes
  
Appearance
Layered, Banded, Veined and Shiny
  
Rough and Dull
  
Architecture
  
  
Interior Uses
Countertops, Decorative Aggregates, Entryways, Floor Tiles, Flooring, Homes, Hotels, Interior Decoration
  
Decorative Aggregates, Homes, Interior Decoration
  
Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Garden Decoration, Office Buildings
  
As Building Stone, Garden Decoration, Office Buildings
  
Other Architectural Uses
Curbing
  
Curbing, Whetstones
  
Industry
  
  
Construction Industry
As Dimension Stone, Construction Aggregate, Landscaping, Roadstone
  
Used for flooring, stair treads, borders and window sills.
  
Medical Industry
Not Yet Used
  
Not Yet Used
  
Antiquity Uses
Artifacts, Sculpture
  
Artifacts, Monuments, Sculpture
  
Other Uses
  
  
Commercial Uses
Creating Artwork, Gemstone, Jewelry
  
Fire resistant, Used to manufracture paperweights and bookends
  
Types
Collapse Breccia, Fault Breccia, Flow Breccia, Pyroclastic Breccia, Igneous Breccia and Impact Breccia
  
Not Available
  
Features
Available in Lots of Colors and Patterns, Clasts are smooth to touch
  
Is one of the oldest rock
  
Archaeological Significance
  
  
Monuments
Not Yet Used
  
Used
  
Famous Monuments
Not Applicable
  
Data Not Available
  
Sculpture
Used
  
Used
  
Famous Sculptures
Data Not Available
  
Data Not Available
  
Pictographs
Not Used
  
Used
  
Petroglyphs
Not Used
  
Used
  
Figurines
Used
  
Used
  
Fossils
Present
  
Present
  
Formation
Breccia is a clastic sedimentary rock which is composed of broken fragments of minerals or rock which are cemented together by a fine-grained matrix and it forms where broken, angular fragments of rock or mineral debris accumulate.
  
An argillite is a fine-grained sedimentary rock mainly composed of clay particles which forms from lithified muds which contain variable amounts of silt-sized particles.
  
Composition
  
  
Mineral Content
Calcite, Clay, Feldspar, Phosphates, Quartz, Silica
  
Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz
  
Compound Content
Aluminium Oxide, Ca, NaCl, CaO, Iron(III) Oxide, Potassium Oxide, Sodium Oxide, Silicon Dioxide, Titanium Dioxide
  
Iron(III) Oxide, Potassium Oxide, MgO, Silicon Dioxide
  
Transformation
  
  
Metamorphism
Yes
  
No
  
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism
  
Not Applicable
  
Weathering
Yes
  
Yes
  
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
  
Biological Weathering
  
Erosion
Yes
  
Yes
  
Types of Erosion
Chemical Erosion
  
Chemical Erosion
  
Physical Properties
  
  
Hardness
7
  
2-3
  
Grain Size
Medium to Coarse Grained
  
Fine Grained
  
Fracture
Uneven
  
Conchoidal to Uneven
  
Streak
White
  
White to Grey
  
Porosity
Less Porous
  
Highly Porous
  
Luster
Dull to Pearly
  
Waxy and Dull
  
Cleavage
Non-Existent
  
Slaty
  
Toughness
Not Available
  
2.6
  
Specific Gravity
2.86-2.87
  
2.56-2.68
  
Transparency
Opaque
  
Opaque
  
Density
0 g/cm3
  
2.54-2.66 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
Not Available
  
0.87 kJ/Kg K
  
14
Resistance
Heat Resistant, Impact Resistant, Pressure Resistant, Wear Resistant
  
Heat Resistant, Impact Resistant
  
Deposits in Eastern Continents
  
  
Asia
China, India, Kazakhstan, Mongolia, Russia, South Korea, Uzbekistan
  
Bangladesh, China, India, Russia
  
Africa
Namibia, Nigeria, South Africa
  
Ethiopia, Kenya, Morocco, South Africa, Tanzania
  
Europe
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom
  
Austria, France, Germany, Greece, Italy, Romania, Scotland, Spain, Switzerland
  
Others
Greenland
  
Not Yet Found
  
Deposits in Western Continents
  
  
North America
Barbados, Canada, Mexico, Panama, USA
  
USA
  
South America
Brazil
  
Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
  
Deposits in Oceania Continent
  
  
Australia
New South Wales, New Zealand
  
New South Wales, New Zealand, Queensland, Victoria, Western Australia
  
All about Breccia and Argillite Properties
Know all about Breccia and Argillite properties here. All properties of rocks are important as they define the type of rock and its application. Breccia and Argillite belong to Sedimentary Rocks.Texture of Breccia is Brecciated, Clastic whereas that of Argillite is Clastic, Polished. Breccia appears Layered, Banded, Veined and Shiny and Argillite appears Rough and Dull. The luster of Breccia is dull to pearly while that of Argillite is waxy and dull. Breccia is available in beige, black, blue, brown, buff, green, grey, orange, pink, purple, red, rust, white, yellow colors whereas Argillite is available in dark grey to black, pink, red, white colors. The commercial uses of Breccia are creating artwork, gemstone, jewelry and that of Argillite are fire resistant, used to manufracture paperweights and bookends.