Difference between revisions of "Mohs scale of mineral hardness"
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− | To determine the hardness of a mineral or a hone, we are using the scale of mineral hardness by Friedrich Mohs. It is based on "what scratches what". | + | To determine the hardness of a mineral or a hone, we are using the scale of mineral hardness by Friedrich Mohs. It is based on "what scratches what". |
{| border="1" cellpadding="5" cellspacing="0" | {| border="1" cellpadding="5" cellspacing="0" | ||
− | |||
|- | |- | ||
− | | | + | ! style="background:#efefef;" | '''Substance or Mineral''' |
+ | ! style="background:#efefef;" | '''Hardness''' | ||
|- | |- | ||
− | | | + | | Diamond |
+ | | 10 | ||
|- | |- | ||
− | | | + | | Corundum (Al<sub>2</sub>O<sub>3</sub>) |
+ | | 9 | ||
|- | |- | ||
− | | | + | | Carborundum (SiC) |
+ | | 9 | ||
|- | |- | ||
− | | | + | | Ruby |
+ | | 9 | ||
|- | |- | ||
− | | | + | | Saphire |
+ | | 9 | ||
|- | |- | ||
− | | | + | | Chrysoberyll |
+ | | 8,5 | ||
|- | |- | ||
− | | | + | | Spinell |
+ | | 8 | ||
|- | |- | ||
− | | | + | | Topaz |
+ | | 8 | ||
|- | |- | ||
− | | | + | | Beryll |
+ | | 7,5 - 8 | ||
|- | |- | ||
− | | | + | | Emerald |
+ | | 7,5 - 8 | ||
|- | |- | ||
− | | | + | | Wolfram |
+ | | 7,5 | ||
|- | |- | ||
− | | | + | | Garnet |
+ | | 7- 7,5 | ||
|- | |- | ||
− | | | + | | Zircon |
+ | | 6,5 - 7,5 | ||
|- | |- | ||
− | | | + | | Amethyst |
+ | | 7 | ||
|- | |- | ||
− | | | + | | Quartz |
+ | | 7 | ||
|- | |- | ||
− | | | + | | Citrin |
+ | | 7 | ||
|- | |- | ||
− | | | + | | Tiger Eye |
+ | | 7 | ||
|- | |- | ||
− | | | + | | Agate |
+ | | 6,5 -7 | ||
|- | |- | ||
− | | | + | | Jadeit |
+ | | 6,5 - 7 | ||
|- | |- | ||
− | | | + | | Jaspis |
+ | | 6,5 - 7 | ||
|- | |- | ||
− | | | + | | Carneol |
+ | | 6,5 - 7 | ||
|- | |- | ||
− | | | + | | Moss-Agate |
+ | | 6,5 - 7 | ||
|- | |- | ||
− | | | + | | Onyx-Chalcedon |
+ | | 6,5 - 7 | ||
|- | |- | ||
− | | | + | | Labradorit |
+ | | 6 - 6,5 | ||
|- | |- | ||
− | | | + | | Moon stone |
+ | | 6 - 6,5 | ||
|- | |- | ||
− | | | + | | Pyrite |
+ | | 6 - 6,5 | ||
|- | |- | ||
− | | | + | | Titan |
+ | | 6 | ||
|- | |- | ||
− | | | + | | Haematite |
+ | | 5,5 - 6,5 | ||
|- | |- | ||
− | | | + | | Opal |
+ | | 5,5 - 6,5 | ||
|- | |- | ||
− | | | + | | Beryllonit |
+ | | 5,5 - 6 | ||
|- | |- | ||
− | | | + | | Glass |
+ | | 5 - 7 | ||
|- | |- | ||
− | | | + | | Lapislazuli |
+ | | 5 - 6 | ||
|- | |- | ||
− | | | + | | Obsidian |
+ | | 5 - 5,5 | ||
|- | |- | ||
− | | | + | | Turquoise |
+ | | 5 -6 | ||
|- | |- | ||
− | | | + | | Iron |
+ | | 4,5 | ||
|- | |- | ||
− | | | + | | Platinum |
+ | | 4,3 | ||
|- | |- | ||
− | | | + | | Rhodochrosit |
+ | | 4 | ||
|- | |- | ||
− | | | + | | Nickel |
+ | | 3,8 | ||
|- | |- | ||
− | | | + | | Malachite |
+ | | 3,5 - 4 | ||
|- | |- | ||
− | | | + | | Coral |
+ | | 3 - 4 | ||
|- | |- | ||
− | | | + | | Pearl |
+ | | 3 - 4 | ||
|- | |- | ||
− | | | + | | Calcit |
+ | | 3 | ||
|- | |- | ||
− | | | + | | Silver |
+ | | 2,7 | ||
|- | |- | ||
− | | | + | | Jet |
+ | | 2,5 - 3,5 | ||
|- | |- | ||
− | | | + | | Gold |
+ | | 2,5 - 3 | ||
|- | |- | ||
− | | | + | | Copper |
+ | | 2,5 - 3 | ||
|- | |- | ||
− | | | + | | Zinc |
+ | | 2,5 | ||
|- | |- | ||
− | | | + | | Seafoam |
+ | | 2 - 2,5 | ||
|- | |- | ||
− | | | + | | Amber |
+ | | 2 - 2,5 | ||
|- | |- | ||
− | | | + | | Ivory |
+ | | 2 - 3 | ||
|- | |- | ||
− | | | + | | Alabaster |
+ | | 2 | ||
|- | |- | ||
− | | Lead | + | | Tin |
+ | | 1,8 | ||
+ | |- | ||
+ | | Horn | ||
+ | | 1,5 - 2,5 | ||
+ | |- | ||
+ | | Lead | ||
+ | | 1,2 | ||
|} | |} | ||
− | More information about this scale can be found in [[wikipedia: | + | More information about this scale can be found in [[wikipedia:Mohs scale of mineral hardness|Mohs scale of mineral hardness]]. |
[[Category:Hones]] | [[Category:Hones]] |
Latest revision as of 17:15, 13 August 2009
To determine the hardness of a mineral or a hone, we are using the scale of mineral hardness by Friedrich Mohs. It is based on "what scratches what".
Substance or Mineral | Hardness |
---|---|
Diamond | 10 |
Corundum (Al2O3) | 9 |
Carborundum (SiC) | 9 |
Ruby | 9 |
Saphire | 9 |
Chrysoberyll | 8,5 |
Spinell | 8 |
Topaz | 8 |
Beryll | 7,5 - 8 |
Emerald | 7,5 - 8 |
Wolfram | 7,5 |
Garnet | 7- 7,5 |
Zircon | 6,5 - 7,5 |
Amethyst | 7 |
Quartz | 7 |
Citrin | 7 |
Tiger Eye | 7 |
Agate | 6,5 -7 |
Jadeit | 6,5 - 7 |
Jaspis | 6,5 - 7 |
Carneol | 6,5 - 7 |
Moss-Agate | 6,5 - 7 |
Onyx-Chalcedon | 6,5 - 7 |
Labradorit | 6 - 6,5 |
Moon stone | 6 - 6,5 |
Pyrite | 6 - 6,5 |
Titan | 6 |
Haematite | 5,5 - 6,5 |
Opal | 5,5 - 6,5 |
Beryllonit | 5,5 - 6 |
Glass | 5 - 7 |
Lapislazuli | 5 - 6 |
Obsidian | 5 - 5,5 |
Turquoise | 5 -6 |
Iron | 4,5 |
Platinum | 4,3 |
Rhodochrosit | 4 |
Nickel | 3,8 |
Malachite | 3,5 - 4 |
Coral | 3 - 4 |
Pearl | 3 - 4 |
Calcit | 3 |
Silver | 2,7 |
Jet | 2,5 - 3,5 |
Gold | 2,5 - 3 |
Copper | 2,5 - 3 |
Zinc | 2,5 |
Seafoam | 2 - 2,5 |
Amber | 2 - 2,5 |
Ivory | 2 - 3 |
Alabaster | 2 |
Tin | 1,8 |
Horn | 1,5 - 2,5 |
Lead | 1,2 |
More information about this scale can be found in Mohs scale of mineral hardness.