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File:Crystal facet formation.svg

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English: Schematic illustration of why crystals have smooth faces. The rough edges have a lot of dangling bonds, which new atoms can easily bond to as the crystal grows. The smooth planes (with low surface energy and usually low Miller index) have fewer dangling bonds, and new atoms cannot easily attach, so these planes grow outwards more slowly. Eventually you end up with the whole surface being smooth planes. This cartoon is supposed to represent of cross-section of halite: Purple circles are sodium ions, green circles are chloride ions. Image is inspired by a similar one at http://www.its.caltech.edu/~atomic/snowcrystals/faceting/faceting.htm
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Author Sbyrnes321
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22 November 2011

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9a176eae8f1353962cfa44992003c14024a7071e

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Date/TimeThumbnailDimensionsUserComment
current10:43, 21 April 2022Thumbnail for version as of 10:43, 21 April 20221,820 × 648 (1 KB)Sarangsome errors repaired, odd values straighted, code simplified to 7,45%
19:48, 22 November 2011Thumbnail for version as of 19:48, 22 November 20111,820 × 648 (167 KB)Sbyrnes321darker atoms, makes the orange arrows stand out better
17:49, 22 November 2011Thumbnail for version as of 17:49, 22 November 20111,820 × 648 (167 KB)Sbyrnes321replaced text with arrows; filled in three missing bonds
17:27, 22 November 2011Thumbnail for version as of 17:27, 22 November 20111,889 × 731 (166 KB)Sbyrnes321

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