Definition
Gabbro is an intrusive igneous rock which is chemically equivalent to plutonic Basalt
  
Limestone is a sedimentary rock composed mostly of calcite and aragonite, which are different crystal forms of calcium carbonate
  
History
  
  
Origin
Germany
  
New Zealand
  
Discoverer
Christian Leopold von Buch
  
Belsazar Hacquet
  
Etymology
From Latin glaber bare, smooth, bald
  
From lime and stone in late 14th Century
  
Class
Igneous Rocks
  
Sedimentary Rocks
  
Sub-Class
Durable Rock, Hard Rock
  
Durable Rock, Medium Hardness Rock
  
Family
  
  
Group
Plutonic
  
Not Applicable
  
Other Categories
Coarse Grained Rock, Opaque Rock
  
Fine Grained Rock, Opaque Rock
  
Texture
Phaneritic
  
Clastic or Non-Clastic
  
Color
Dark Grey to Black
  
Beige, Black, Blue, Brown, Cream, Gold, Green, Grey, Light Green, Light Grey, Linen, Pink, Red, Rust, Silver, White, Yellow
  
Maintenance
Less
  
More
  
Durability
Durable
  
Durable
  
Water Resistant
Yes
  
No
  
Scratch Resistant
Yes
  
Yes
  
Stain Resistant
Yes
  
Yes
  
Wind Resistant
Yes
  
No
  
Acid Resistant
Yes
  
No
  
Appearance
Veined and Shiny
  
Rough and Banded
  
Architecture
  
  
Interior Uses
Countertops, Decorative Aggregates, Homes, Interior Decoration
  
Decorative Aggregates, Interior Decoration
  
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings, Paving Stone
  
As Building Stone, As Facing Stone, Garden Decoration, Office Buildings
  
Other Architectural Uses
Curbing
  
Curbing
  
Industry
  
  
Construction Industry
As Dimension Stone, Building houses or walls, Cement Manufacture, Construction Aggregate, for Road Aggregate
  
Cement Manufacture, Cobblestones, for Road Aggregate, Production of Glass and Ceramics, Raw material for the manufacture of mortar, Roadstone, Source of calcium
  
Medical Industry
Not Yet Used
  
In Chemical and Pharmaceutical Industry, Medicines and Cosmetics
  
Antiquity Uses
Artifacts, Monuments, Sculpture
  
Artifacts, Monuments, Sculpture, Small Figurines
  
Other Uses
  
  
Commercial Uses
Cemetery Markers, Commemorative Tablets, Laboratory bench tops, Jewelry, Sea Defence, Tombstones
  
Animal feed filler, As a Feed Additive for Livestock, Paper Industry, Raw material for manufacture of quicklime, slaked lime, Soil Conditioner, Used in aquariums, Whiting material in toothpaste, paint and paper
  
Types
Not Available
  
Chalk, Coquina, Fossiliferous Limestone, Lithographic Limestone, Oolitic Limestone, Travertine, Tufa
  
Features
Smooth to touch
  
Host Rock for Lead, Stalactites and stalagmites are formed from this rock, Zinc and Copper Deposits
  
Archaeological Significance
  
  
Monuments
Used
  
Used
  
Famous Monuments
Data Not Available
  
Acropolis of Athens in Greece, Agia Sophia in Istanbul, Turkey, Al Aqsa Mosque in Jerusalem, Angkor Wat in Cambodia, Big Ben in London, Charminar in Hyderabad, India, Chhatrapati Shivaji Terminus in Maharashtra, India, Chichen Itza in Mexico, Empire State Building in New York, Khajuraho Temples, India, Kremlin in Moscow, Louvre in Paris, France, Neuschwanstein in Bavaria, Potala Palace in Lahasa, Tibet, Wailing Wall in Jerusalem
  
Sculpture
Used
  
Used
  
Famous Sculptures
Data Not Available
  
Ajanta Caves in Maharashtra, India, Elephanta Caves in Maharashtra, India
  
Pictographs
Not Used
  
Used
  
Petroglyphs
Not Used
  
Used
  
Figurines
Used
  
Used
  
Fossils
Absent
  
Present
  
Formation
Gabbro, a mafic rock, forms due to cooling and crystallization of magma underneath Earth's surface.
  
Limestone is a sedimentary rock which is mainly made up of calcium carbonate.
  
Composition
  
  
Mineral Content
Augite, Olivine, Plagioclase, Pyroxene
  
Calcite, Chert, Clay, Dolomite, Quartz, Sand, Silt
  
Compound Content
Aluminium Oxide, CaO, Chromium(III) Oxide, Iron(III) Oxide, Potassium Oxide, MgO, Sodium Oxide, Silicon Dioxide, Sulfur Trioxide
  
Aluminium Oxide, NaCl, CaO, Iron(III) Oxide, FeO, MgO
  
Transformation
  
  
Metamorphism
Yes
  
No
  
Types of Metamorphism
Impact Metamorphism
  
Not Applicable
  
Weathering
Yes
  
Yes
  
Types of Weathering
Chemical Weathering
  
Biological Weathering, Chemical Weathering, Mechanical Weathering
  
Erosion
Yes
  
Yes
  
Types of Erosion
Coastal Erosion
  
Chemical Erosion, Coastal Erosion
  
Physical Properties
  
  
Hardness
7
  
3-4
  
Grain Size
Coarse Grained
  
Fine Grained
  
Fracture
Conchoidal
  
Splintery
  
Streak
Black
  
White
  
Porosity
Highly Porous
  
Less Porous
  
Luster
Not Available
  
Dull to Pearly
  
Compressive Strength
225.00 N/mm2
  
7
115.00 N/mm2
  
18
Cleavage
Not Available
  
Non-Existent
  
Toughness
1.6
  
1
  
Specific Gravity
2.86-2.87
  
2.3-2.7
  
Transparency
Opaque
  
Opaque
  
Density
2.7-3.3 g/cm3
  
2.3-2.7 g/cm3
  
Thermal Properties
  
  
Specific Heat Capacity
Not Available
  
0.91 kJ/Kg K
  
11
Resistance
Impact Resistant, Pressure Resistant, Wear Resistant
  
Pressure Resistant
  
Deposits in Eastern Continents
  
  
Asia
India, Russia
  
Brunei, India, Indonesia, Malaysia, Singapore, Thailand, Vietnam
  
Africa
South Africa
  
Cameroon, Chad, Ghana, Kenya, Malawi, Sudan, Tanzania, Togo, Zambia, Zimbabwe
  
Europe
Germany, Greece, Italy, Scotland, Turkey
  
United Kingdom
  
Others
Greenland
  
Not Yet Found
  
Deposits in Western Continents
  
  
North America
Canada, USA
  
USA
  
South America
Brazil, Colombia, Venezuela
  
Colombia
  
Deposits in Oceania Continent
  
  
Australia
New Zealand, Queensland
  
Adelaide, New Zealand, Queensland, Tonga, Victoria, Yorke Peninsula
  
All about Gabbro and Limestone Properties
Know all about Gabbro and Limestone properties here. All properties of rocks are important as they define the type of rock and its application. Gabbro belongs to Igneous Rocks while Limestone belongs to Sedimentary Rocks.Texture of Gabbro is Phaneritic whereas that of Limestone is Clastic or Non-Clastic. Gabbro appears Veined and Shiny and Limestone appears Rough and Banded. The luster of Gabbro is not available while that of Limestone is dull to pearly. Gabbro is available in dark grey to black colors whereas Limestone is available in beige, black, blue, brown, cream, gold, green, grey, light green, light grey, linen, pink, red, rust, silver, white, yellow colors. The commercial uses of Gabbro are cemetery markers, commemorative tablets, laboratory bench tops, jewelry, sea defence, tombstones and that of Limestone are animal feed filler, as a feed additive for livestock, paper industry, raw material for manufacture of quicklime, slaked lime, soil conditioner, used in aquariums, whiting material in toothpaste, paint and paper.