Initial Publication Date: June 28, 2005
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Unknown #3

Download and view the crystal structure data

  1. Right click on Unknown_3.cmdf ( 2kB Dec16 09) to download the crystal structure to your computer. (This file was modified from a CIF file in the Crystal Structure Library provided in CrystalMaker).
  2. Start the CrystalMaker program.
  3. Choose the File > Open command, and select the file you just downloaded to view in CrystalMaker.
  4. Click on OK to generate the crystal structure for viewing. You should see something like this...

Determine the identity of the unknown

Using your knowledge of crystallography and systematic mineralogy, and manipulating the downloaded structure in CrystalMaker, answer the following questions to deduce the identity of the unknown. Check your answers by clicking on the "show answer" tabs which appear with each question.

...so what mineral is this?

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