Mohs Scale

Absolute Hardness	Mohs Scale	Mineral
1	1	Talc
3	2	Gypsum
9	3	Calcite
21	4	Fluorite
48	5	Apatite
72	6	Orthoclase
100	7	Quartz
200	8	Topaz
400	9	Corundum
1600	10	Diamond

This standard scale of mineral hardness was devised in 1822 by Freidrich Mohs. It uses common minerals and objects as benchmarks. These benchmarks do not follow a linear progression of increasing hardness.

Graphing Exercise

Using the table data, plot the Mohs scale hardness (x-axis) versus the absolute hardness (y-axis). Be sure to label the axes and provide a title.