The Mohs scale of mineral hardness characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. It was created in 1812 by the German geologist and mineralogist Friedrich Mohs and is one of several definitions of hardness in materials science.
This worksheet has 10 questions that refer to Mohs Hardness Scale and the Field Hardness Scale. Some of the questions are straight forward while others will require some higher level thinking. It is great to use with the Rocks and Minerals Unit of study.
Ammolite is a fossilized ammonite shell shows fantastic iridescent colors. Like Opal, Ammolite is too soft for wear in most jewelry (although pendants and earrings work out very well.)These beauties come from a single deposit in southern Alberta, Canada.