READING TABLES AND GRAPHS - COLLEGE PREP

Using table 1, which mineral is used to make glass?

A copper penny has a hardness of 3. Using Table 3, what minerals can a copper penny scratch?

According to the Rosiwal Scale of Hardness, how many times harder is a diamond than corundum?

Using Table 2, which mineral is green, a white streak, a vitreous luster, & scratches fluorite?

Apatite scratches azurite. Azurite scratches talc, gypsum, & calcite. Azurite's hardness is?

Military engineers developed a tool with a mineral to cut through windows. Which mineral is it?