Mohs' Scale of Hardness 3.5 / 5 based on 2 ratings ? GeologyASOCR Created by: Ollie Short (momo)Created on: 03-04-13 12:58 What reference mineral is a hardness 3? Calcite 1 of 22 Which reference mineral(s) can only just be scratched by a steel nail? Feldspar 2 of 22 What hardness is Fluorite 4 3 of 22 What scratches Calcite? 2p coin 4 of 22 What reference mineral is hardness 9 Corundum 5 of 22 What is the softest reference mineral (hardness 1)? Talc 6 of 22 Which reference mineral(s) can be scratched by a fingernail? Talc, Gypsum 7 of 22 Which reference mineral is hardness 10? Diamond 8 of 22 What scratches hardness 7+ reference minerals? Nothing, they scratch glass 9 of 22 What reference mineral is hardness 5 Apatite 10 of 22 Which is harder Topaz or Quartz Topaz 11 of 22 Which reference mineral is easily scratched by a steel nail Fluorite or Apatite? Both 12 of 22 What scratches Calcite? 2p coin 13 of 22 What scratches hardness 6? Steel nail, but only just 14 of 22 Put Apatite, Calcite and Fluorite in order of decreasing hardness Apatite, Fluorite, Calcite 15 of 22 What hardness is Quartz? 7 16 of 22 What scratches Corundum Nothing, it scratches glass 17 of 22 What reference mineral is hardness 4? Fluorite 18 of 22 What hardness is Topaz? 8 19 of 22 What reference mineral is hardness 2? Gypsum 20 of 22 Which is softer Talc or Quartz? Talc 21 of 22 What reference mineral is hardness 9? Corundum 22 of 22
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