Andesite and Jaspillite
Definition
Definition
Andesite is a dark, fine-grained, brown or greyish intermediate volcanic rock which is a commonly found in lava
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
History
Origin
North America
Western Australia, Minnesota
Discoverer
Unknown
Unknown
Etymology
From Andes mountains, where it is found in abundance
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
Class
Igneous Rocks
Sedimentary Rocks
Sub-Class
Durable Rock, Hard Rock
Durable Rock, Soft Rock
Family
Group
Volcanic
Not Applicable
Other Categories
Fine Grained Rock, Opaque Rock
Coarse Grained Rock, Opaque Rock
Texture
Texture
Aphanitic to Porphyritic
Banded, Trellis
Color
Bluish - Grey, Grey, Pink, Yellow
Red, Reddish Brown
Maintenance
More
Less
Durability
Durable
Durable
Water Resistant
No
No
Scratch Resistant
Yes
No
Stain Resistant
Yes
No
Wind Resistant
No
No
Acid Resistant
Yes
No
Appearance
Dull and Soft
Banded and Glassy
Uses
Architecture
Interior Uses
Decorative Aggregates, Floor Tiles, Homes, Interior Decoration, Kitchens
Decorative Aggregates, Interior Decoration
Exterior Uses
Office Buildings, Roof Tiles
As Facing Stone, Garden Decoration, Paving Stone
Other Architectural Uses
Curbing
Curbing
Industry
Construction Industry
Cobblestones, Construction Aggregate, for Road Aggregate
As a Flux in the Production of Steel and Pig Iron, As a Sintering Agent in Steel Industry to process Iron Ore, As Dimension Stone, Cement Manufacture, for Road Aggregate, Making natural cement, Manufacture of Magnesium and Dolomite Refractories
Medical Industry
Not Yet Used
Not Yet Used
Antiquity Uses
Artifacts, Monuments, Sculpture, Small Figurines
Artifacts, Jewellery, Monuments
Other Uses
Commercial Uses
Commemorative Tablets, Creating Artwork
Creating Artwork, Jewelry
Types
Types
Icelandite
Algoma-type , Lake Superior-type and Superior-type
Features
Generally rough to touch, High silica content, Is one of the oldest rock
Is one of the oldest rock
Archaeological Significance
Monuments
Used
Used
Famous Monuments
Middle of the Earth in Ecuador
Data Not Available
Sculpture
Used
Not Yet Used
Famous Sculptures
Data Not Available
Not Applicable
Pictographs
Not Used
Used
Petroglyphs
Not Used
Used
Figurines
Used
Not Yet Used
Fossils
Absent
Present
Formation
Formation
Andesite is a fine-grained igneous rock that forms when the magma is erupted onto the surface and is crystallized quickly.
Jaspillite is a type of sedimentary rock which is formed by the compaction and sedimentation of pieces of broken or weathered rocks and minerals.
Composition
Mineral Content
Amphibole, Apatite, Biotite, Feldspar, Garnet, Hornblade, Ilmenite, Magnetite, Plagioclase, Pyroxene, Zircon
Coesite, Quartz, Sand
Compound Content
Silicon Dioxide
Fe, Iron(III) Oxide, Silicon Dioxide
Transformation
Metamorphism
Yes
No
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
Not Applicable
Weathering
Yes
Yes
Types of Weathering
Biological Weathering, Chemical Weathering, Mechanical Weathering
Biological Weathering, Chemical Weathering
Erosion
Yes
Yes
Types of Erosion
Chemical Erosion, Coastal Erosion, Glacier Erosion
Chemical Erosion, Coastal Erosion
Properties
Physical Properties
Hardness
7
3
Grain Size
Very fine-grained
Large and Coarse Grained
Fracture
Uneven
Conchoidal
Streak
White
White
Porosity
Less Porous
Very Less Porous
Luster
Vitreous
Earthy
Compressive Strength
225.00 N/mm2
7
230.00 N/mm2
6
Cleavage
Not Available
Imperfect
Toughness
1.1
Not Available
Specific Gravity
2.5-2.8
5.0-5.3
Transparency
Opaque
Translucent to Opaque
Density
2.11-2.36 g/cm3
0-5.7 g/cm3
Thermal Properties
Specific Heat Capacity
2.39 kJ/Kg K
2
3.20 kJ/Kg K
1
Resistance
Heat Resistant, Pressure Resistant, Wear Resistant
Heat Resistant, Impact Resistant, Wear Resistant
Reserves
Deposits in Eastern Continents
Asia
India, Indonesia, Japan, Nepal, South Korea
Russia
Africa
Egypt, Ethiopia, Morocco, Namibia, South Africa, Tanzania
Not Yet Found
Europe
Austria, Finland, Germany, Italy, Romania, Turkey, United Kingdom
Ukraine
Others
Not Yet Found
Not Yet Found
Deposits in Western Continents
North America
Mexico, USA
Canada, USA
South America
Argentina, Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela
Brazil
Deposits in Oceania Continent
Australia
New South Wales, New Zealand, Western Australia
Western Australia
All about Andesite and Jaspillite Properties
Know all about Andesite and Jaspillite properties here. All properties of rocks are important as they define the type of rock and its application. Andesite belongs to Igneous Rocks while Jaspillite belongs to Sedimentary Rocks.Texture of Andesite is Aphanitic to Porphyritic whereas that of Jaspillite is Banded, Trellis. Andesite appears Dull and Soft and Jaspillite appears Banded and Glassy. The luster of Andesite is vitreous while that of Jaspillite is earthy. Andesite is available in bluish - grey, grey, pink, yellow colors whereas Jaspillite is available in red, reddish brown colors. The commercial uses of Andesite are commemorative tablets, creating artwork and that of Jaspillite are creating artwork, jewelry.
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