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Encyclopedia > Dendrite (crystal)
This rock was used a pavement around swimming pool area in Kona

A crystal dendrite is a crystal that develops with a typical multi-branching tree-like form. Dendritic crystal growth is very common and illustrated by snowflake formation and frost patterns on a window. Dendritic crystallization forms a natural fractal pattern. Image File history File links Metadata Size of this preview: 800 × 533 pixelsFull resolution (3000 × 2000 pixels, file size: 5. ... Image File history File links Metadata Size of this preview: 800 × 533 pixelsFull resolution (3000 × 2000 pixels, file size: 5. ... There is also a town of Kailua on the Island of O‘ahu. ... Look up snowflake in Wiktionary, the free dictionary. ... Frost on black pipes Frost is a solid deposition of water vapor from saturated air. ... The boundary of the Mandelbrot set is a famous example of a fractal. ...


The term "dendrite" comes from the Greek word dendron, which means "tree".

Contents

Mineralogy and paleontology

Example of a dendrite
Example of a dendrite

In paleontology, dendritic mineral crystal forms are often mistaken for fossils. These pseudofossils form as naturally occurring fissures in the rock are filled by percolating mineral solutions. They form when water rich in manganese and iron flows along fractures and bedding planes between layers of limestone and other rock types, depositing dendritic crystals as the solution flows through. A variety of manganese oxides and hydroxides are involved, including: Image File history File links Metadata Size of this preview: 800 × 600 pixelsFull resolution‎ (2,272 × 1,704 pixels, file size: 1. ... Image File history File links Metadata Size of this preview: 800 × 600 pixelsFull resolution‎ (2,272 × 1,704 pixels, file size: 1. ... Paleontology, palaeontology or palæontology (from Greek: paleo, ancient; ontos, being; and λόγος, logos, knowledge) is the study of prehistoric life forms on Earth through the examination of plant and animal fossils. ... For other uses, see Fossil (disambiguation). ... A pseudofossil is a fake fossil, or a false fossil. ... General Name, symbol, number manganese, Mn, 25 Chemical series transition metals Group, period, block 7, 4, d Appearance silvery metallic Standard atomic weight 54. ... For other uses, see Iron (disambiguation). ... For other uses, see Limestone (disambiguation). ...

  • birnessite (Na4Mn14O27·9H2O)
  • coronadite (PBMn8O16)
  • cryptomelane (KMn8O16)
  • hollandite (BaMn8O16)
  • romanechite ((Ba,H2O)Mn5O10)
  • todorokite ((Ba,Mn,Mg,Ca,K,Na)2Mn3O12·3H2O) and others.

A three-dimensional form of dendrite develops in fissures in quartz, forming moss agate. For other uses, see Quartz (disambiguation). ... For other uses, see Agate (disambiguation). ...


Crystallography and metallurgy

In chemistry, a dendrite is a crystal that branches into two parts during growth. For other uses, see Chemistry (disambiguation). ... For other uses, see Crystal (disambiguation). ...


NASA microgravity experiment

Animated GIF of dendrite formation - NASA
Animated GIF of dendrite formation - NASA

The Isothermal Dendritic Growth Experiment (IDGE) is a materials science solidification experiment that researchers use on Space Shuttle missions to investigate dendritic growth. Dendritic solidification is one of the most common forms of solidifying metals and alloys. When materials crystallize or solidify under certain conditions, they freeze unstably, resulting in dendritic forms. Scientists are particularly interested in dendrite size, shape, and how the branches of the dendrites interact with each other. These characteristics largely determine the properties of the material. Image File history File links Idge. ... Image File history File links Idge. ... The Materials Science Tetrahedron, which often also includes Characterization at the center Materials science or Materials Engineering is an interdisciplinary field involving the properties of matter and its applications to various areas of science and engineering. ... This article is about the space vehicle. ...


See also

A monocrystalline whisker is a filament of material that is structured as a single, defect-free crystal. ... Metal whiskers are a crystalline metallurgical phenomenon whereby metal grows tiny, filiform hairs. ... A Brownian tree example A Brownian tree, whose name is derived from Robert Brown via Brownian motion, is a form of computer art that was briefly popular in the 1990s, when home computers started to have sufficient power to simulate Brownian motion. ... This was a mission of the United States Space Shuttle. ...

References

  • Mindat Manganese Dendrites
  • What is a dendrite?
  • The Isothermal Dendritic Growth Experiment
  • Snow crystals
  • Dendritic Solidification

  Results from FactBites:
 
Dendrite (crystal) - Wikipedia, the free encyclopedia (263 words)
Dendritic crystal growth is very common and illustrated by snowflake formation and frost patterns on a window.
In chemistry, a dendrite is a crystal that branches into two parts during growth.
Dendritic solidification is one of the most common forms of solidifying metals and alloys.
Crystal Properties (5813 words)
In this type of Crystal, the largest face is 7 sided and located in the center front position of the terminated end of the crystal and is opposite a small triangular face on the opposite side.
It is believed this crystal is a combination crystal that incorporates the properties of both a Channneler and a Transmitter crystal in one crystal.
The crystal is wider at the base than at the tip and their sides are usually curved or bent looking.These are wonderful for concentrating a tight beam of energy on a small area or to stimulate an area hidden within the body such as a gland.
  More results at FactBites »

 
 

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