Van Der Waals Bonding

This type of bonding is quite rare and very weak. It is found in organic compounds and in the crystallised forms of certain gases, like argon and neon.  Examples are sulphur, graphite, and gypsum.

In this diagram of Selenite atoms we see alternating layers of SO4 Tetrahedra, (blue), calcium (teal), and water (yellow). The bonds between these layers are very weak. This explains why selenite is so easy to scratch.  Incidentally, selenite atomic structure demonstrates how much of the planet’s water content is locked away in rocks and minerals beneath the ground.

Copyright © Crystal Gateways 2005 – 2012. Amanda and Francis Moloney.

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Needless it should be to say, but said it must be: Nothing written on this website should be considered before professional medical advice in the case of any medical condition whatsoever. And, only an idiot, or a complete curmudgeon would believe otherwise!

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Francis Moloney@https://amras888.wordpress.com

© Crystal Gateways 2012

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Author: amras888

Francis Moloney @Amras888 Composer, instrumentalist and Logic 8 software user. Bereavement Counselor retired. A Philosopher now disabled, bedbound but happy. Love my wife, son, and dog.

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