Wednesday, February 10, 2010

True or false? Earth science/chemistry question?

As minerals grow into larger structures, their structure becomes a more complex crystal that is different from the simple structure of small minerals.





True OR False?True or false? Earth science/chemistry question?
False.





A certain type of mineral will have the same structure regardless of its size. Take a diamond, for example. Big or small, the simple molecular structure is that of a carbon atom connected to 4 other carbons. As you get bigger, the structure is just scaled up.True or false? Earth science/chemistry question?
That's FALSE!





Say you're looking at a pretty big piece of quartz, it will have the same structure (number of faces, how it fractures, etc.) as a microscopic sample of quartz. The macro features of minerals reflect their micro properties.
TRUE.


in the case of Fractals.
False The stucture of a mineral remains the same. A small Quartz Crystal is the Same as A large Quarts Crystal. A cubic chrystal will always be a cubic crystal and So on.
False. Crystal structure is constant regardless of size.





The only case I can think of is the transition from aragonite to calcite which are polymorphs. Changes in pressure will cause the crystal structure to change...

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