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Shoshonite and Borolanite


Borolanite and Shoshonite


Definition

Definition
Shoshonite is a basaltic rock, properly a potassic trachyandesite, composed of olivine, augite and plagioclase phenocrysts in a groundmass with calcic plagioclase and sanidine and some dark-colored volcanic glass  
Borolanite is a variety of Nepheline Syenite and belongs to igneous rocks and contains nepheline-alkali feldspar pseudomorphs which occur as conspicuous white spots in the dark rock matrix  

History
  
  

Origin
Wyoming,USA  
Scotland  

Discoverer
Iddings  
Unknown  

Etymology
From the place of origin called Shoshone riverin Wyoming  
From Alkalic Igneous complex near Loch Borralan in northwest Scotland  

Class
Igneous Rocks  
Igneous Rocks  

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

Family
  
  

Group
Volcanic  
Plutonic  

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

Texture

Texture
Porphyritic  
Granular  

Color
Brown- Black, Dark Brown  
Brown, Buff, Cream, Green, Grey, Pink, White  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
No  

Stain Resistant
Yes  
No  

Wind Resistant
Yes  
Yes  

Acid Resistant
Yes  
Yes  

Appearance
Dull  
Banded and Foilated  

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

Construction Industry
As Dimension Stone, Cobblestones, Rail Track Ballast, Roadstone  
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics  

Medical Industry
-  
-  

Antiquity Uses
Sculpture  
Artifacts  

Other Uses
  
  

Commercial Uses
Cemetery Markers, Creating Artwork  
Cemetery Markers  

Types

Types
Intermediate volcanic rock  
-  

Features
Has High structural resistance against erosion and climate, Very fine grained rock  
Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Shoshonite is a fine-grained, hard rock which is a type of metasomatite, essentially altered basalt. It forms with or without crystallization, either below the surface as intrusive rocks or on the surface as extrusive rocks.  
Borolanites are formed due to alkaline igneous activities and are generally formed in thick continental crustal areas or in Cordilleran subduction zones.  

Composition
  
  

Mineral Content
Pyroxene  
Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite  

Compound Content
Aluminium Oxide, Iron(III) Oxide, Potassium Oxide, Sodium Oxide, Titanium Dioxide  
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide  

Transformation
  
  

Metamorphism
Yes  
Yes  

Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism  
Regional Metamorphism  

Weathering
Yes  
Yes  

Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering  
Chemical Weathering, Mechanical Weathering  

Erosion
Yes  
Yes  

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

Properties

Physical Properties
  
  

Hardness
6  
5.5-6  

Grain Size
Medium to Fine Coarse Grained  
Fine Grained  

Fracture
Uneven  
Conchoidal to Uneven  

Streak
White to Grey  
White  

Porosity
Less Porous  
Less Porous  

Luster
Dull  
Greasy to Dull  

Compressive Strength
175.00 N/mm2  
20
150.00 N/mm2  
22

Cleavage
-  
-  

Toughness
1.6  
-  

Specific Gravity
2.98  
2.6  

Transparency
Opaque  
Translucent to Opaque  

Density
2.9-3 g/cm3  
2.6 g/cm3  

Thermal Properties
  
  

Specific Heat Capacity
0.79 kJ/Kg K  
17
0.84 kJ/Kg K  
15

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

Reserves

Deposits in Eastern Continents
  
  

Asia
India, Russia  
Indonesia, Iran, Russia, Saudi Arabia, Sri Lanka, Taiwan, Thailand, Turkey, Turkmenistan, Vietnam  

Africa
South Africa  
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa  

Europe
Iceland  
Andorra, Finland, France, Great Britain, Italy, Norway, Portugal, Spain, Sweden  

Others
-  
Greenland  

Deposits in Western Continents
  
  

North America
Canada, USA  
Canada, USA  

South America
Brazil  
Brazil, Chile, Colombia, Uruguay, Venezuela  

Deposits in Oceania Continent
  
  

Australia
-  
New Zealand, Queensland, South Australia, Tasmania, Western Australia  

Summary >>
<< Reserves

All about Shoshonite and Borolanite Properties

Know all about Shoshonite and Borolanite properties here. All properties of rocks are important as they define the type of rock and its application. Shoshonite and Borolanite belong to Igneous Rocks.Texture of Shoshonite is Porphyritic whereas that of Borolanite is Granular. Shoshonite appears Dull and Borolanite appears Banded and Foilated. The luster of Shoshonite is dull while that of Borolanite is greasy to dull. Shoshonite is available in brown- black, dark brown colors whereas Borolanite is available in brown, buff, cream, green, grey, pink, white colors. The commercial uses of Shoshonite and Borolanite are cemetery markers, creating artwork.

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