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Conglomerate and Hornfels


Hornfels and Conglomerate


Definition

Definition
Conglomerate is a sedimentary rock which forms from rounded gravel and boulder sized clasts which are cemented together in a matrix   
Hornfels is a metamorphic rock formed by the contact between mudstone or other clay rich rock, and a hot igneous body, and represents a heat altered equivalent of the original rock   

History
  
  

Origin
Italy   
New Zealand   

Discoverer
Unknown   
Unknown   

Etymology
From Latin conglomeratus, to roll together, i.e. from com together + glomerare to gather into a ball, from glomus (genitive glomeris) a ball   
From German which means hornstone   

Class
Sedimentary Rocks   
Metamorphic Rocks   

Sub-Class
Durable Rock, Soft Rock   
Durable Rock, Soft Rock   

Family
  
  

Group
Not Applicable   
Not Applicable   

Other Categories
Coarse Grained Rock, Opaque Rock   
Fine Grained Rock, Opaque Rock   

Texture

Texture
Clastic   
Granular, Platy   

Color
Beige, Black, Brown, Buff, Light to Dark Grey, Orange, Rust, White, Yellow   
Brown, Dark Greenish - Grey, Green, Reddish Brown   

Maintenance
More   
Less   

Durability
Durable   
Durable   

Water Resistant
No   
Yes   

Scratch Resistant
Yes   
No   

Stain Resistant
No   
No   

Wind Resistant
No   
No   

Acid Resistant
No   
No   

Appearance
Shiny and Rounded   
Dull   

Uses

Architecture
  
  

Interior Uses
Decorative Aggregates, Floor Tiles, Homes   
Decorative Aggregates, Flooring, Homes, Interior Decoration   

Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Roof Tiles   
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone   

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Roadstone   
for Road Aggregate, Roadstone   

Medical Industry
Not Yet Used   
Not Yet Used   

Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines   
Artifacts, Monuments   

Other Uses
  
  

Commercial Uses
Cemetery Markers, In aquifers, Tombstones   
Cemetery Markers, Commemorative Tablets, Creating Artwork   

Types

Types
Not Available   
Biotite hornfels   

Features
Clasts are smooth to touch, Is one of the oldest rock, Matrix variable   
Smooth to touch   

Archaeological Significance
  
  

Monuments
Used   
Used   

Famous Monuments
Data Not Available   
Data Not Available   

Sculpture
Used   
Not Yet Used   

Famous Sculptures
Data Not Available   
Not Applicable   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Used   
Not Yet Used   

Fossils
Present   
Absent   

Formation

Formation
Conglomerate forms where sediments consisting mainly of pebble and cobble-size clasts at least two millimeters in diameter starts accumulating.   
Due to change in environmental conditions, rocks are heated and pressurized deep inside the Earth's surface. Hornfels is formed from the extreme heat caused by magma or by the intense collisions and friction of tectonic plates.   

Composition
  
  

Mineral Content
Clay, Sand, Silica, Silt   
Andalusite   

Compound Content
NaCl, CaO   
Fe, Mg   

Transformation
  
  

Metamorphism
Yes   
No   

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Regional Metamorphism   
Not Applicable   

Weathering
No   
Yes   

Types of Weathering
Not Applicable   
Biological Weathering   

Erosion
No   
Yes   

Types of Erosion
Chemical Erosion, Coastal Erosion   
Chemical Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion   

Properties

Physical Properties
  
  

Hardness
2-3   
2-3   

Grain Size
Coarse Grained   
Fine Grained   

Fracture
Uneven   
Conchoidal   

Streak
White   
Unknown   

Porosity
Highly Porous   
Highly Porous   

Luster
Dull   
Shiny   

Compressive Strength
Not Available   
5.80 N/mm2   
31

Cleavage
Non-Existent   
Perfect   

Toughness
Not Available   
Not Yet Found   

Specific Gravity
2.86-2.88   
3.4-3.9   

Transparency
Opaque   
Opaque   

Density
1.7-2.3 g/cm3   
0.25-0.30 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.92 kJ/Kg K   
10
0.84 kJ/Kg K   
15

Resistance
Heat Resistant   
Heat Resistant, Impact Resistant, Pressure Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan   
Bangladesh, Bhutan, China, India, North Korea, Qatar, Russia, Saudi Arabia, South Korea, Thailand   

Africa
Namibia, Nigeria, South Africa   
Cameroon, East Africa, Tanzania, Western Africa   

Europe
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom   
United Kingdom   

Others
Greenland   
Not Yet Found   

Deposits in Western Continents
  
  

North America
Canada, USA   
Canada, USA   

South America
Brazil   
Bolivia, Brazil, Colombia, Ecuador   

Deposits in Oceania Continent
  
  

Australia
New South Wales, New Zealand   
New South Wales, New Zealand, Queensland, Western Australia   

Summary >>
<< Reserves

All about Conglomerate and Hornfels Properties

Know all about Conglomerate and Hornfels properties here. All properties of rocks are important as they define the type of rock and its application. Conglomerate belongs to Sedimentary Rocks while Hornfels belongs to Metamorphic Rocks.Texture of Conglomerate is Clastic whereas that of Hornfels is Granular, Platy. Conglomerate appears Shiny and Rounded and Hornfels appears Dull. The luster of Conglomerate is dull while that of Hornfels is shiny. Conglomerate is available in beige, black, brown, buff, light to dark grey, orange, rust, white, yellow colors whereas Hornfels is available in brown, dark greenish - grey, green, reddish brown colors. The commercial uses of Conglomerate are cemetery markers, in aquifers, tombstones and that of Hornfels are cemetery markers, commemorative tablets, creating artwork.

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