Definition
Litchfieldite is a rare igneous rock which is coarse-grained, foliated and a variety of nepheline syenite, sometimes also called as nepheline syenite gneiss or gneissic nepeheline syenite
  
Pegmatite rock is a holocrystalline, intrusive igneous rock which is composed of interlocking phaneritic crystals
  
History
  
  
Origin
USA
  
Unknown
  
Discoverer
Bayley
  
R. J. Hauy
  
Etymology
From its occurrence at Litchfield, Maine, USA
  
From Greek pegma, pegmat which means- thing joined together + -ite
  
Class
Igneous Rocks
  
Igneous Rocks
  
Sub-Class
Durable Rock, Medium Hardness Rock
  
Durable Rock, Hard Rock
  
Family
  
  
Group
Plutonic
  
Plutonic
  
Other Categories
Coarse Grained Rock, Opaque Rock
  
Coarse Grained Rock, Opaque Rock
  
Texture
Granular
  
Pegmatitic
  
Color
Brown, Buff, Cream, Green, Grey, Pink, White
  
Black, Brown, Cream, Green, Grey, Pink, Red, Rust, Silver, White, Yellow
  
Maintenance
Less
  
Less
  
Durability
Durable
  
Durable
  
Water Resistant
Yes
  
Yes
  
Scratch Resistant
Yes
  
Yes
  
Stain Resistant
Yes
  
Yes
  
Wind Resistant
No
  
No
  
Acid Resistant
No
  
No
  
Appearance
Banded and Foilated
  
Layered, Banded, Veined and Shiny
  
Architecture
  
  
Interior Uses
Countertops, Decorative Aggregates, Flooring, Interior Decoration
  
Decorative Aggregates, Flooring, Interior Decoration
  
Exterior Uses
As Building Stone, As Facing Stone, Garden Decoration
  
As Building Stone, As Facing Stone, Paving Stone
  
Other Architectural Uses
Curbing
  
Curbing
  
Industry
  
  
Construction Industry
As Dimension Stone, Cement Manufacture, Construction Aggregate, for Road Aggregate, Landscaping, Making natural cement, Manufacture of Magnesium and Dolomite Refractories, Production of Glass and Ceramics
  
As Dimension Stone, Building houses or walls, Construction Aggregate, for Road Aggregate, Landscaping
  
Medical Industry
Not Yet Used
  
Not Yet Used
  
Antiquity Uses
Artifacts, Monuments, Sculpture
  
Artifacts, Sculpture, Small Figurines
  
Other Uses
  
  
Commercial Uses
Creating Artwork
  
Creating Artwork, Jewelry, Source of corundum, tourmalines, beryls and topaz
  
Types
Borolanite and Litchfieldite
  
Granite Pegmatite, Gabbro Pegmatite and Diorite Pegmatite
  
Features
Application of acids on the surface causes cloudy frosting, Available in Lots of Colors and Patterns, Dissolves in hydrochloric acid, Is one of the oldest rock
  
Generally rough to touch, Is one of the oldest rock, Source of corundum, tourmalines, beryls and topaz
  
Archaeological Significance
  
  
Monuments
Used
  
Not Yet Used
  
Famous Monuments
Data Not Available
  
Not Applicable
  
Sculpture
Used
  
Used
  
Famous Sculptures
Data Not Available
  
Data Not Available
  
Pictographs
Used
  
Not Used
  
Petroglyphs
Used
  
Not Used
  
Figurines
Used
  
Used
  
Fossils
Absent
  
Absent
  
Formation
Litchfieldite 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.
  
Pegmatite rock is holocrystalline, intrusive igneous rock which is formed by partial melting and dewatering during the process of metamorphism.
  
Composition
  
  
Mineral Content
Albite, Amphibole, Biotite, Cancrinite, Feldspar, Hornblende, Plagioclase, Pyroxene, Sodalite
  
Apatite, Beryl, Feldspar, Fluorite, Garnet, Lepidolite, Quartz, Silica, Spodumene, Topaz
  
Compound Content
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, MgO, MnO, Sodium Oxide, Phosphorus Pentoxide, Silicon Dioxide, Titanium Dioxide
  
Aluminium Oxide, CaO, Iron(III) Oxide, FeO, Potassium Oxide, Magnesium Carbonate, MgO, Phosphorus Pentoxide
  
Transformation
  
  
Metamorphism
Yes
  
Yes
  
Types of Metamorphism
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Impact Metamorphism
  
Burial Metamorphism, Cataclastic Metamorphism, Contact Metamorphism, Hydrothermal Metamorphism, Impact Metamorphism, Regional Metamorphism
  
Weathering
Yes
  
Yes
  
Types of Weathering
Biological Weathering, Mechanical Weathering
  
Biological Weathering, Chemical Weathering, Mechanical Weathering
  
Erosion
Yes
  
Yes
  
Types of Erosion
Coastal Erosion, Water Erosion, Wind Erosion
  
Chemical Erosion, Coastal Erosion, Glacier Erosion, Sea Erosion, Water Erosion, Wind Erosion
  
Physical Properties
  
  
Hardness
5.5-6
  
7
  
Grain Size
Coarse Grained
  
Medium to Coarse Grained
  
Fracture
Conchoidal to Uneven
  
Conchoidal
  
Streak
White
  
White
  
Porosity
Less Porous
  
Less Porous
  
Luster
Greasy to Dull
  
Grainy, Pearly and Vitreous
  
Compressive Strength
150.00 N/mm2
  
14
178.54 N/mm2
  
12
Cleavage
Poor
  
Perfect
  
Toughness
Not Available
  
2.1
  
Specific Gravity
2.6
  
2.6-2.63
  
Transparency
Translucent to Opaque
  
Translucent to Opaque
  
Density
2.6 g/cm3
  
2.6-2.65 g/cm3
  
Thermal Properties
  
  
Resistance
Heat Resistant, Impact Resistant, Wear Resistant
  
Heat Resistant, Impact Resistant, Pressure Resistant
  
Deposits in Eastern Continents
  
  
Asia
Not Yet Found
  
China, India, Iran, Japan, Nepal, North Korea, Russia, Saudi Arabia, South Korea
  
Africa
South Africa
  
South Africa
  
Europe
Finland, Norway, Portugal
  
Austria, France, Greece, Ireland, Italy, Netherlands, Slovakia, Spain, Turkey, Ukraine
  
Others
Not Yet Found
  
Not Yet Found
  
Deposits in Western Continents
  
  
North America
Canada
  
Canada
  
South America
Brazil
  
Brazil
  
Deposits in Oceania Continent
  
  
Australia
Not Yet Found
  
New South Wales, Queensland, South Australia, Western Australia
  
All about Litchfieldite and Pegmatite Properties
Know all about Litchfieldite and Pegmatite properties here. All properties of rocks are important as they define the type of rock and its application. Litchfieldite and Pegmatite belong to Igneous Rocks.Texture of Litchfieldite is Granular whereas that of Pegmatite is Pegmatitic. Litchfieldite appears Banded and Foilated and Pegmatite appears Layered, Banded, Veined and Shiny. The luster of Litchfieldite is greasy to dull while that of Pegmatite is grainy, pearly and vitreous. Litchfieldite is available in brown, buff, cream, green, grey, pink, white colors whereas Pegmatite is available in black, brown, cream, green, grey, pink, red, rust, silver, white, yellow colors. The commercial uses of Litchfieldite are creating artwork and that of Pegmatite are creating artwork, jewelry, source of corundum, tourmalines, beryls and topaz.