3 Tutorials that teach Geology: Crystals
Take your pick:
Geology: Crystals

Geology: Crystals

This lesson will present how to identify and classify crystals.
See More
Introduction to Psychology

Analyze this:
Our Intro to Psych Course is only $329.

Sophia college courses cost up to 80% less than traditional courses*. Start a free trial now.



Crystals describe the structure of minerals in a solid material.  A crystalline structure is when the mineral particles repeat over and over again in a pattern. You may be familiar with minerals such as gold, diamond, topaz and quartz. Many of these minerals are used in jewelry. These minerals and all other minerals have a specific crystal structure as well as other specific properties. You can identify these minerals with properties such as their color, their luster, streak color, hardness, density or crystal system. The crystal structure varies depending on the shape of the crystals. For example, quartz crystals are hexagonal while magnetite crystals are cubic.


Example crystal structure with repeating pattern of particles:



Source: usgs.gov