MohsHärtegrad

MohsHärtegrad refers to the Mohs scale of mineral hardness, a qualitative ordinal scale that ranks ten common minerals from softest to hardest. Developed by German mineralogist Friedrich Mohs in 1812, it is used to determine the relative scratch resistance of minerals. Each mineral on the scale can scratch any mineral that is lower on the scale. For example, a mineral with a Mohs hardness of 7 can scratch any mineral with a hardness of 6 or less.

The scale consists of the following minerals: 1. Talc, 2. Gypsum, 3. Calcite, 4. Fluorite, 5. Apatite, 6. Orthoclase feldspar, 7. Quartz, 8. Topaz, 9. Corundum, and 10. Diamond. Diamond is the hardest known natural substance and is at the top of the scale.

The Mohs scale is a simple and practical tool for field geologists and gemologists. It does not represent absolute hardness, meaning the difference in hardness between 9 and 10 is much greater than the difference between 1 and 2. However, for identification purposes, it provides a useful initial assessment of a mineral's toughness.