Activity

Crystal systems

In this activity, students investigate crystal shapes and crystal systems. Traditional ceramics are clay-based – clays have a mineral composition and minerals have a crystalline structure.

By the end of this activity, students should be able to:

  • describe the main points of difference between a crystalline solid and an amorphous solid

  • recognise and identify at least 3 of the 7 crystal systems

  • use models to point out the angular and side length differences that characterise the cubic, triclinic and rhombohedral crystal systems

  • effectively use optical aids such as hand lenses and simple microscopes to view crystalline solids.

Diagram of the Seven crystal systems: lengths, angles etc.

Seven crystal systems

Only a limited number of crystal shapes have been found in nature. There are only 7 groups, or crystal systems, into which all naturally occurring crystals can be placed. 

Rights: The University of Waikato Te Whare Wānanga o Waikato

Download the Word file (see link below) for:

  • introduction/background notes

  • instructions on what you need and what to do

  • student worksheet.

Related content

Before doing this activity, ensure your students understand what is clay and what are minerals.

Related activity idea

Minerals present in granite – identify the main minerals present in granite and investigate some of their properties.

Published: 27 April 2010