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Gossan and Wackestone


Wackestone and Gossan


Definition

Definition
Gossan is intensely oxidized, weathered or decomposed rock, usually the upper and exposed part of an ore deposit or mineral vein.   
A carbonate rock which is matrix supported and contains over 10% allochems in a carbonate mud matrix.   

History
  
  

Origin
Indonesia   
Unknown   

Discoverer
Cornish Gossen   
Unknown   

Etymology
From Cornish gossen from gos, blood from Old Cornish guit   
From the English mud and stone, from low German mudde and stainaz   

Class
Metamorphic Rocks   
Sedimentary Rocks   

Sub-Class
Durable Rock, Medium Hardness Rock   
Durable Rock, Soft Rock   

Family
  
  

Group
Not Applicable   
Not Applicable   

Other Categories
Fine Grained Rock, Medium Grained Rock, Opaque Rock   
Fine Grained Rock, Opaque Rock   

Texture

Texture
Rough, Sandy   
Clastic   

Color
Brown, Brown- Black, Gold, Green, Rust   
Black, Blue, Brown, Green, Grey, Orange, Red, White, Yellow   

Maintenance
Less   
Less   

Durability
Durable   
Durable   

Water Resistant
Yes   
Yes   

Scratch Resistant
Yes   
Yes   

Stain Resistant
Yes   
No   

Wind Resistant
No   
No   

Acid Resistant
No   
No   

Appearance
Dull and Banded   
Rough and Dull   

Uses

Architecture
  
  

Interior Uses
Countertops, Decorative Aggregates, Interior Decoration   
Decorative Aggregates, Flooring, Interior Decoration   

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

Other Architectural Uses
Curbing   
Curbing   

Industry
  
  

Construction Industry
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate   
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
Artifacts   
Artifacts, Sculpture   

Other Uses
  
  

Commercial Uses
Cemetery Markers, Commemorative Tablets, Gemstone   
Cemetery Markers, Pottery   

Types

Types
Translocated gossan and Leakage gossan   
Marl, Shale and Argillite   

Features
Clasts are smooth to touch, Easily splits into thin plates   
Available in Lots of Colors and Patterns, Smooth to touch, Very fine grained rock   

Archaeological Significance
  
  

Monuments
Not Yet Used   
Not Yet Used   

Famous Monuments
Not Applicable   
Not Applicable   

Sculpture
Not Yet Used   
Used   

Famous Sculptures
Not Applicable   
Data Not Available   

Pictographs
Used   
Used   

Petroglyphs
Used   
Used   

Figurines
Not Yet Used   
Used   

Fossils
Absent   
Present   

Formation

Formation
Earth movements can cause rocks to be either deeply buried or squeezed and hence the rocks are heated and put under great pressure.   
Wackestone is a type of sedimentary rock formed when a river carries or transports pieces of broken rock as it flows. These particles settle down and are then compacted due to high temperature and pressure hence forming Wackestone.   

Composition
  
  

Mineral Content
Apatite, Augite, Biotite, Bronzite, Calcite, Chert, Epidote, Feldspar, Hornblende, Micas, Plagioclase, Pyroxene, Quartz, Sulfides, Zircon   
Biotite, Chlorite, Feldspar, Micas, Muscovite or Illite, Plagioclase, Pyrite, Quartz   

Compound Content
Aluminium Oxide, CaO, Fe, FeO, Silicon Dioxide, Sulphur   
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, Silicon Dioxide   

Transformation
  
  

Metamorphism
No   
No   

Types of Metamorphism
Not Applicable   
Not Applicable   

Weathering
No   
Yes   

Types of Weathering
Not Applicable   
Biological Weathering, Chemical Weathering, Mechanical Weathering   

Erosion
Yes   
Yes   

Types of Erosion
Chemical Erosion, Sea Erosion, Wind Erosion   
Chemical Erosion, Sea Erosion, Wind Erosion   

Properties

Physical Properties
  
  

Hardness
4-5   
2-3   

Grain Size
Fine to Medium Grained   
Very fine-grained   

Fracture
Conchoidal   
Conchoidal   

Streak
White to Grey   
White   

Porosity
Highly Porous   
Highly Porous   

Luster
Metallic   
Dull   

Compressive Strength
Not Available   
225.00 N/mm2   
7

Cleavage
Not Available   
Perfect   

Toughness
Not Available   
2.6   

Specific Gravity
2.0   
2.2-2.8   

Transparency
Opaque   
Opaque   

Density
Not Available   
2.4-2.8 g/cm3   

Thermal Properties
  
  

Specific Heat Capacity
0.24 kJ/Kg K   
24
0.39 kJ/Kg K   
23

Resistance
Heat Resistant, Impact Resistant, Pressure Resistant   
Heat Resistant, Impact Resistant   

Reserves

Deposits in Eastern Continents
  
  

Asia
China, India, Indonesia, Russia, Singapore, South Korea   
Bangladesh, China, India, Russia   

Africa
Cape Verde, Ethiopia, Ghana, South Africa, Western Africa   
Ethiopia, Kenya, Morocco, South Africa, Tanzania   

Europe
Albania, France, Germany, Great Britain, United Kingdom   
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, Colombia, Ecuador   
Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela   

Deposits in Oceania Continent
  
  

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

Summary >>
<< Reserves

All about Gossan and Wackestone Properties

Know all about Gossan and Wackestone properties here. All properties of rocks are important as they define the type of rock and its application. Gossan belongs to Metamorphic Rocks while Wackestone belongs to Sedimentary Rocks.Texture of Gossan is Rough, Sandy whereas that of Wackestone is Clastic. Gossan appears Dull and Banded and Wackestone appears Rough and Dull. The luster of Gossan is metallic while that of Wackestone is dull. Gossan is available in brown, brown- black, gold, green, rust colors whereas Wackestone is available in black, blue, brown, green, grey, orange, red, white, yellow colors. The commercial uses of Gossan are cemetery markers, commemorative tablets, gemstone and that of Wackestone are cemetery markers, pottery.

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