Definition
Rhyolite is a fine-grained igneous rock which is rich in silica
  
A ganister is a hard, fine-grained quartzose sandstone or orthoquartzite which is basically used in the manufacture of silica brick typically used to line furnaces and is a type of sedimentary rocks.
  
History
  
  
Origin
North America
  
England
  
Discoverer
Ferdinand von Richthofen
  
Unknown
  
Etymology
From German Rhyolit, from Greek rhuax lava stream + lithos stone
  
From gan′is-ter i.e a hard, close-grained siliceous stone, often forming the stratum which underlies a coal-seam
  
Class
Igneous Rocks
  
Sedimentary Rocks
  
Sub-Class
Durable Rock, Hard Rock
  
Durable Rock, Hard Rock
  
Family
  
  
Group
Volcanic
  
Not Applicable
  
Other Categories
Coarse Grained Rock, Opaque Rock
  
Coarse Grained Rock, Fine Grained Rock, Opaque Rock
  
Texture
Aphanitic, Glassy, Porphyritic
  
Clastic, Granular, Rough
  
Color
Grey, White, Light Black
  
Beige, Black, Brown, Colourless, Cream, Dark Brown, Green, Grey, Light Green, Light to Dark Grey, Pink, Red, White, Yellow
  
Maintenance
More
  
Less
  
Durability
Durable
  
Durable
  
Water Resistant
Yes
  
Yes
  
Scratch Resistant
Yes
  
Yes
  
Stain Resistant
Yes
  
Yes
  
Wind Resistant
Yes
  
Yes
  
Acid Resistant
Yes
  
No
  
Appearance
Banded
  
Rough
  
Architecture
  
  
Interior Uses
Decorative Aggregates, Homes, Hotels, Interior Decoration, Kitchens
  
Decorative Aggregates, Entryways, Flooring, Homes, Interior Decoration
  
Exterior Uses
As Building Stone, As Facing Stone, Paving Stone, Office Buildings
  
As Building Stone, Garden Decoration, Office Buildings, Paving Stone
  
Other Architectural Uses
Not Yet Used
  
Curbing
  
Industry
  
  
Construction Industry
Arrowheads, As Dimension Stone, Building houses or walls, Construction Aggregate, Cutting Tool, for Road Aggregate, Knives
  
Cement Manufacture, Construction Aggregate, for Road Aggregate, Production of Glass and Ceramics, Raw material for the manufacture of mortar
  
Medical Industry
Not Yet Used
  
Not Yet Used
  
Antiquity Uses
Artifacts
  
Artifacts, Monuments, Sculpture, Small Figurines
  
Other Uses
  
  
Commercial Uses
Gemstone, Laboratory bench tops, Jewelry
  
An Oil and Gas Reservoir, In aquifers, Petroleum reservoirs, Soil Conditioner, Source of Magnesia (MgO), Tombstones
  
Types
Pumice Rocks, Obsidian Rocks, Perlite Rocks, Porphyritic Rocks.
  
Not Available
  
Features
Acidic in nature, Available in lots of colors
  
Available in Lots of Colors and Patterns, Generally rough to touch, Very fine grained rock
  
Archaeological Significance
  
  
Monuments
Not Yet Used
  
Used
  
Famous Monuments
Not Applicable
  
Data Not Available
  
Sculpture
Not Yet Used
  
Used
  
Famous Sculptures
Not Applicable
  
Data Not Available
  
Pictographs
Not Used
  
Not Used
  
Petroglyphs
Not Used
  
Not Used
  
Figurines
Not Yet Used
  
Used
  
Fossils
Absent
  
Present
  
Formation
Rhyolite is a felsic extrusive rock and due to its high silica content, rhyolite lava is very viscous and is volcanic equivalent of granite.
  
Ganisters are formed by the destruction of easily weathered minerals mainly feldspar, within the surface horizon of soil by soil-forming processes.
  
Composition
  
  
Mineral Content
Biotite, Feldspar, Hornblade, Plagioclase, Pyroxene, Quartz
  
Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz
  
Compound Content
Ca, Fe, Potassium Oxide, Mg, Potassium, Silicon Dioxide, Sodium
  
Aluminium Oxide, CaO, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide
  
Transformation
  
  
Metamorphism
Yes
  
No
  
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Regional 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, Sea Erosion, Water Erosion, Wind Erosion
  
Water Erosion, Wind Erosion
  
Physical Properties
  
  
Hardness
6-7
  
6-7
  
Grain Size
Large and Coarse Grained
  
Coarse or Fine
  
Fracture
Sub-conchoidal
  
Splintery
  
Streak
Colorless
  
White
  
Porosity
Highly Porous
  
Highly Porous
  
Luster
Earthy
  
Dull
  
Compressive Strength
140.00 N/mm2
  
15
95.00 N/mm2
  
20
Cleavage
Not Available
  
Perfect
  
Toughness
2
  
2.6
  
Specific Gravity
2.65-2.67
  
2.2-2.8
  
Transparency
Opaque
  
Opaque
  
Density
2.4-2.6 g/cm3
  
2.2-2.8 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
Not Available
  
0.92 kJ/Kg K
  
10
Resistance
Heat Resistant, Wear Resistant
  
Heat Resistant, Impact Resistant, Pressure Resistant
  
Deposits in Eastern Continents
  
  
Asia
China, India
  
China, India, Kazakhstan, Mongolia, Russia, Uzbekistan
  
Africa
Angola, Egypt, Madagascar, Namibia, Nigeria, South Africa
  
Namibia, Nigeria, South Africa
  
Europe
Germany, Iceland, Ireland, Italy, Spain
  
Austria, Denmark, Germany, Great Britain, Netherlands, Norway, Poland, Sweden, Switzerland, United Kingdom
  
Others
Not Yet Found
  
Greenland
  
Deposits in Western Continents
  
  
North America
Canada, USA
  
Canada, USA
  
South America
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
  
Brazil
  
Deposits in Oceania Continent
  
  
Australia
New Zealand, Queensland, Western Australia
  
New South Wales, New Zealand
  
Rhyolite vs Ganister Characteristics
Though some rocks look identical, they have certain characteristics which distinguish them from others. Characteristics of rocks include texture, appearance, color, fracture, streak, hardness etc. Rhyolite vs Ganister characteristics assist us to distinguish and recognize rocks. Also you can check about Properties of Rhyolite and Properties of Ganister. Learn more about Rhyolite vs Ganister in the next section. The interior uses of Rhyolite include Decorative aggregates, Homes, Hotels, Interior decoration and Kitchens whereas the interior uses of Ganister include Decorative aggregates, Entryways, Flooring, Homes and Interior decoration. Due to some exceptional properties of Rhyolite and Ganister, they have various applications in construction industry. The uses of Rhyolite in construction industry include Arrowheads, As dimension stone, Building houses or walls, Construction aggregate, Cutting tool, For road aggregate, Knives and that of Ganister include Cement manufacture, Construction aggregate, For road aggregate, Production of glass and ceramics, Raw material for the manufacture of mortar.
More about Rhyolite and Ganister
Here you can know more about Rhyolite and Ganister. The life cycle of a rock consists of formation of rock, composition of rock and transformation of rock. The composition of Rhyolite and Ganister consists of mineral content and compound content. The mineral content of Rhyolite includes Biotite, Feldspar, Hornblade, Plagioclase, Pyroxene, Quartz and mineral content of Ganister includes Calcite, Clay, Clay Minerals, Feldspar, Micas, Quartz. You can also check out the list of all Igneous Rocks. When we have to compare Rhyolite vs Ganister, the texture, color and appearance plays an important role in determining the type of rock. Rhyolite is available in grey, white, light black colors whereas, Ganister is available in beige, black, brown, colourless, cream, dark brown, green, grey, light green, light to dark grey, pink, red, white, yellow colors. Appearance of Rhyolite is Banded and that of Ganister is Rough. Properties of rock is another aspect for Rhyolite vs Ganister. Hardness of Rhyolite and Ganister is 6-7. The types of Rhyolite are Pumice Rocks, Obsidian Rocks, Perlite Rocks, Porphyritic Rocks. whereas types of Ganister are Not Available. Streak of rock is the color of powder produced when it is dragged across an unweathered surface. The streak of Rhyolite is colorless while that of Ganister is white. The specific heat capacity of Rhyolite is Not Available and that of Ganister is 0.92 kJ/Kg K. Depending on the properties like hardness, toughness, specific heat capacity, porosity etc., rocks are resistant to heat, wear, impact, etc.Rhyolite is heat resistant, wear resistant whereas Ganister is heat resistant, impact resistant, pressure resistant.