Graddfa Mohs
Graddfa i fesur caledwch mwynau yw graddfa Mohs a grewyd gan Friedrich Mohs ym 1812.[1]
Safle ar raddfa Mohs | Mwyn | Fformiwla gemegol | Caledwch absoliwt | Delwedd |
---|---|---|---|---|
1 | Talc | Mg3Si4O10(OH)2 | 1 | ![]() |
2 | Gypswm | CaSO4·2H2O | 3 | ![]() |
3 | Calsit | CaCO3 | 9 | ![]() |
4 | Fflworit | CaF2 | 21 | ![]() |
5 | Apatit | Ca5(PO4)3(OH–,Cl–,F–) | 48 | ![]() |
6 | Orthoclas Ffelsbar | KAlSi3O8 | 72 | ![]() |
7 | Cwarts | SiO2 | 100 | ![]() |
8 | Topas | Al2SiO4(OH–,F–)2 | 200 | ![]() |
9 | Corwndwm | Al2O3 | 400 | ![]() |
10 | Diemwnt | C | 1600 | ![]() |
Cyfeiriadau
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