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Lonsdaleite (named in honour of Kathleen Lonsdale), also called hexagonal ... are in the eclipsed conformation, which defines the axis of hexagonal symmetry.

Lonsdaleite is described in multiple online sources, as addition to our editors' articles, see section below for printable documents, Lonsdaleite books and related discussion.

Suggested Pdf Resources

Lonsdaleite C - RRuff
Lonsdaleite. C c с2001-2005 Mineral Data Publishing, version 1. Crystal Data: Hexagonal.
Lonsdaleite formation in process of reverse phase transition
No lonsdaleite peaks were found by X-ray analysis of the initial diamond powder. It is known that during nanodiamond powder annealing in argon [10], ...
Formation of lonsdaleite from single-crystal graphite
Lonsdaleite Films with Nanometer Thickness
Jan 24, 2014 ries.3−5 The fraction of the lonsdaleite phase was usually tiny and only recently ... nanometer-thick diamond films lonsdaleite films will display.
Lonsdaleite is faulted and twinned cubic diamond and does not exist
Nov 20, 2014 Lonsdaleite, also called hexagonal diamond, has been widely used as a ... lonsdaleite consist of cubic diamond dominated by extensive {113} ...

Suggested News Resources

Asteroid impacts on Earth make structurally bizarre diamonds, say ASU scientists
Scientists have argued for half a century about the existence of a form of diamond called lonsdaleite, which is associated with impacts by meteorites and asteroids.
Asteroid impacts on Earth make structurally bizarre diamonds
The lonsdaleite story began almost 50 years ago. Scientists reported that a large meteorite, called Canyon Diablo after the crater it formed on impact in northern Arizona, contained a new form of diamond with a hexagonal structure.
Diamonds are forever? So is lonsdaleite
Lonsdaleite is present naturally in a very small form. This has been synthesised in the laboratory by compressing and heating the graphite either in static pressure or using explosion techinques. This translucent substance is brownish-yellow in colour.
Diamond no longer nature's hardest material
Only small amounts of wurtzite boron nitride and lonsdaleite exist naturally or have been made in the lab, so until now no one had realised their superior strength.
Lonsdaleite, also Called Hexagonal Diamond, 58% Harder Than Regular Diamond
Lonsdaleite is even stronger than w-BN because lonsdaleite is made of carbon atoms and w-BN consists of boron and nitrogen atoms,” Chen explained. “The carbon-carbon bonds in lonsdaleite are stronger than boron-nitrogen bonds in w-BN. This is also ...

Suggested Web Resources

Lonsdaleite - Wikipedia, the free encyclopedia
Lonsdaleite (named in honour of Kathleen Lonsdale), also called hexagonal diamond in reference to the crystal structure, is an allotrope of carbon with a ...
Lonsdaleite: Lonsdaleite mineral information and data. -
A questionable allotrope of carbon based on a hexagonal lattice. Németh et al. ( 2014) consider lonsdaleite to be a faulted and twinned cubic diamond.
Lonsdaleite Mineral Data
Lonsdaleite. Comments: a) A Reflected light photograph of lonsdaleite and unidentified polymorph (New Phase) with lead comtamination. b) synchrotron X- ray ...
Harder than Diamond | TFOT
Researchers from Shanghai Jiao Tong University and the University of Nevada, Las Vegas have calculated that compressed lonsdaleite (also called a ...
Diamond no longer nature's hardest material | New Scientist
Feb 16, 2009 The second, the mineral lonsdaleite, or hexagonal diamond is made from carbon atoms just like diamond, but they are arranged in a different ...

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