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Suevite and Variolite


Variolite and Suevite


Definition

Definition
During the impact melted material forming a breccia containing glass and crystal or lithic fragments together form Suevite rock.  
Variolites are a group of dark green basic igneous rocks which exhibit pale colored spots, or spherules, especially on weathered surfaces, that give them a pockmarked appearance  

History
  
  

Origin
Canada, Germany  
France  

Discoverer
Unknown  
Unknown  

Etymology
No etymologies found  
From Latin varius, speckled, variegated  

Class
Metamorphic Rocks  
Igneous Rocks  

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

Family
  
  

Group
-  
Volcanic  

Other Categories
Coarse Grained Rock, Opaque Rock  
Opaque Rock  

Texture

Texture
Earthy  
Glassy, Massive, Porphyritic, Scoriaceous, Vesicular  

Color
Black, Brown, Green, Grey, Pink  
Black, Brown, Light to Dark Grey  

Maintenance
Less  
Less  

Durability
Durable  
Durable  

Water Resistant
Yes  
Yes  

Scratch Resistant
Yes  
Yes  

Stain Resistant
No  
No  

Wind Resistant
No  
No  

Acid Resistant
No  
Yes  

Appearance
Banded  
Dull and Soft  

Uses

Architecture
  
  

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

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

Other Architectural Uses
Curbing  
Curbing  

Industry
  
  

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

Medical Industry
-  
-  

Antiquity Uses
Artifacts, Monuments, Sculpture  
Artifacts, Monuments, Sculpture  

Other Uses
  
  

Commercial Uses
As a Feed Additive for Livestock, Gemstone, Metallurgical Flux, Source of Magnesia (MgO)  
Cemetery Markers, Creating Artwork  

Types

Types
Phyllosilicates, Calcite  
Metamorphic rock  

Features
Host Rock for Lead  
Has High structural resistance against erosion and climate, Very fine grained rock  

Archaeological Significance
  
  

Monuments
-  
-  

Famous Monuments
-  
-  

Sculpture
-  
-  

Famous Sculptures
-  
-  

Pictographs
-  
-  

Petroglyphs
-  
-  

Figurines
-  
-  

Fossils
Absent  
Absent  

Formation

Formation
Suevite is a metamorphic rock consisting partly of melted material, typically forming a breccia containing glass and crystal or lithic fragments, formed during an impact event.   
Variolites are a group of dark green basic igneous rocks that exhibit pale colored spots on weathered surfaces that give them a pockmarked appearance.  

Composition
  
  

Mineral Content
Coesite, Quartz, Stishovite  
Olivine, Plagioclase, Pyroxene  

Compound Content
CaO, Carbon Dioxide, MgO  
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, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism  
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism  

Weathering
No  
Yes  

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

Erosion
No  
No  

Types of Erosion
-  
-  

Properties

Physical Properties
  
  

Hardness
5.5  
6  

Grain Size
Coarse Grained  
-  

Fracture
Uneven  
Conchoidal  

Streak
Light to dark brown  
White to Grey  

Porosity
Less Porous  
Less Porous  

Luster
Earthy  
-  

Compressive Strength
65.00 N/mm2  
36
37.50 N/mm2  
99+

Cleavage
-  
-  

Toughness
-  
2.3  

Specific Gravity
2.86  
2.8-3  

Transparency
Opaque  
Opaque  

Density
2.8-2.9 g/cm3  
2.9-3.1 g/cm3  

Thermal Properties
  
  

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

Resistance
Heat Resistant  
Heat Resistant, Pressure Resistant, Wear Resistant  

Reserves

Deposits in Eastern Continents
  
  

Asia
-  
India, Russia  

Africa
-  
South Africa  

Europe
England, France, Germany, Great Britain, Netherlands, Sweden, Switzerland, United Kingdom  
Iceland  

Others
-  
-  

Deposits in Western Continents
  
  

North America
-  
Canada, USA  

South America
-  
Brazil  

Deposits in Oceania Continent
  
  

Australia
-  
-  

Summary >>
<< Reserves

All about Suevite and Variolite Properties

Know all about Suevite and Variolite properties here. All properties of rocks are important as they define the type of rock and its application. Suevite belongs to Metamorphic Rocks while Variolite belongs to Igneous Rocks.Texture of Suevite is Earthy whereas that of Variolite is Glassy, Massive, Porphyritic, Scoriaceous, Vesicular. Suevite appears Banded and Variolite appears Dull and Soft. The luster of Suevite is earthy while that of Variolite is . Suevite is available in black, brown, green, grey, pink colors whereas Variolite is available in black, brown, light to dark grey colors. The commercial uses of Suevite are as a feed additive for livestock, gemstone, metallurgical flux, source of magnesia (mgo) and that of Variolite are cemetery markers, creating artwork.

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