Definition
Harzburgite is a plutonic rock of the peridotite group consisting largely of orthopyroxene and olivine
  
Jaspillite is an iron rich chemically formed rock which is common in banded iron formation rocks
  
History
  
  
Origin
Germany
  
Western Australia, Minnesota
  
Discoverer
Unknown
  
Unknown
  
Etymology
From the name of a town in Harzburg, Germany
  
From Jaspilite (Mineral), a compact siliceous rock which resembles jasper
  
Class
Igneous Rocks
  
Sedimentary Rocks
  
Sub-Class
Durable Rock, Medium Hardness Rock
  
Durable Rock, Soft Rock
  
Family
  
  
Group
Plutonic
  
Not Applicable
  
Other Categories
Coarse Grained Rock, Opaque Rock
  
Coarse Grained Rock, Opaque Rock
  
Texture
Phaneritic
  
Banded, Trellis
  
Color
Dark Greenish - Grey
  
Red, Reddish Brown
  
Maintenance
Less
  
Less
  
Durability
Durable
  
Durable
  
Water Resistant
Yes
  
No
  
Scratch Resistant
Yes
  
No
  
Stain Resistant
Yes
  
No
  
Wind Resistant
Yes
  
No
  
Acid Resistant
No
  
No
  
Appearance
Rough and Shiny
  
Banded and Glassy
  
Architecture
  
  
Interior Uses
Decorative Aggregates, Homes, Interior Decoration
  
Decorative Aggregates, Interior Decoration
  
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
  
As Facing Stone, Garden Decoration, Paving Stone
  
Other Architectural Uses
Curbing
  
Curbing
  
Industry
  
  
Construction Industry
As Dimension Stone, Cobblestones
  
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
Creating Artwork, Gemstone, Jewelry, Source of Chromite, Platinum, Nickel and Garnet, Source of Diamonds
  
Creating Artwork, Jewelry
  
Types
Not Available
  
Algoma-type , Lake Superior-type and Superior-type
  
Features
Constitutes upper part of the Earth's mantle, Generally rough to touch, Is one of the oldest rock
  
Is one of the oldest rock
  
Archaeological Significance
  
  
Monuments
Used
  
Used
  
Famous Monuments
Data Not Available
  
Data Not Available
  
Sculpture
Used
  
Not Yet Used
  
Famous Sculptures
Data Not Available
  
Not Applicable
  
Pictographs
Used
  
Used
  
Petroglyphs
Used
  
Used
  
Figurines
Used
  
Not Yet Used
  
Fossils
Absent
  
Present
  
Formation
Harzburgite 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.
  
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, Chromite, Garnet, Magnesium, Olivine, Phlogopite, Plagioclase, Pyroxene
  
Coesite, Quartz, Sand
  
Compound Content
Ca, Fe, Mg, Potassium, Silicon Dioxide, Sodium, Titanium Dioxide
  
Fe, Iron(III) Oxide, Silicon Dioxide
  
Transformation
  
  
Metamorphism
Yes
  
No
  
Types of Metamorphism
Impact Metamorphism
  
Not Applicable
  
Weathering
Yes
  
Yes
  
Types of Weathering
Chemical Weathering, Mechanical Weathering
  
Biological Weathering, Chemical Weathering
  
Erosion
Yes
  
Yes
  
Types of Erosion
Chemical Erosion, Sea Erosion
  
Chemical Erosion, Coastal Erosion
  
Physical Properties
  
  
Hardness
5.5-6
  
3
  
Grain Size
Coarse Grained
  
Large and Coarse Grained
  
Fracture
Irregular
  
Conchoidal
  
Streak
White
  
White
  
Porosity
Less Porous
  
Very Less Porous
  
Luster
Shiny
  
Earthy
  
Compressive Strength
Not Available
  
230.00 N/mm
2
  
6
Cleavage
Imperfect
  
Imperfect
  
Toughness
2.1
  
Not Available
  
Specific Gravity
3-3.01
  
5.0-5.3
  
Transparency
Translucent to Opaque
  
Translucent to Opaque
  
Density
3.1-3.4 g/cm3
  
0-5.7 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
1.25 kJ/Kg K
  
6
3.20 kJ/Kg K
  
1
Resistance
Heat Resistant, Pressure Resistant, Wear Resistant
  
Heat Resistant, Impact Resistant, Wear Resistant
  
Deposits in Eastern Continents
  
  
Asia
Japan, Oman
  
Russia
  
Africa
South Africa
  
Not Yet Found
  
Europe
France, Germany, Italy, Venezuela
  
Ukraine
  
Others
Hawaii Islands, Mid-Atlantic Ridge
  
Not Yet Found
  
Deposits in Western Continents
  
  
North America
Canada, USA
  
Canada, USA
  
South America
Not Yet Found
  
Brazil
  
Deposits in Oceania Continent
  
  
Australia
Not Yet Found
  
Western Australia