The Mohs scale of hardness determines a mineral's hardness by comparing it to the hardness of common household objects:
1. streak plate (unglazed porcelain)= 6.5
2. glass, masonry nail, knife blade= 5.5
3. wire (iron) nail= 4.5
4. brass (wood screw, washer)= 3.5
5. copper coin (penny)= 3.0
6. fingernail= 2.5
It's called the Ore
The Mohs standard hardness scale that was developed by Friedrich Mohs (1773 - 1839).
the mohs scale is the scale we use to identify minerals
Examples: chemical reactivity, toxicity, flammability, stability.
The hardness of minerals is measured using Mohs scale. Minerals are ranked due to their relative hardness from 1 to 10; 1 being the softest, and 10 being the hardest.10 Diamond 9 Corundum 8 Topaz 7 Quartz (porcelain - 7) 6 Orthoclase (steel file - 6.5) 5 Apatite (knife blade or nail - 5, window glass - 5.5) 4 Fluorite 3 Calcite 2 Gypsum (fingernail - 2) 1 Talc.
mohs
diamond
It is the Mohs scale of mineral hardness. It characterizes the scratch resistance of various minerals through the ability of a harder material to scratch a softer material. The scale assigns numbers 1-10. 10 being the hardest of minerals(e.g. diamonds), and 1 being the softest minerals(e.g. talc). Generally minerals with a H<5 are softer minerals and minerals H>5 are harder.
It's called the Ore
It is called the Moh's scale.
The Mohs standard hardness scale that was developed by Friedrich Mohs (1773 - 1839).
The Mohs standard hardness scale that was developed by Friedrich Mohs (1773 - 1839).
the mohs scale is the scale we use to identify minerals
It is called "Mohs Hardness Scale" and it measures what the hardness of a rock or mineral. Legardeboy.
hardness and streak
Examples: chemical reactivity, toxicity, flammability, stability.
A ruby is a mineral corundum. The Mohs hardness scale lists the following from softer to harder: Talc - 1 Gypsum - 2 Calcite - 3 Fluorite - 4 Apatite - 5 Feldspar - 6 Quartz - 7 Topaz - 8 Corundum (which includes the ruby) - 9 Diamond - 10 Ruby has a Mohs hardness of 9.