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Yes
Gypsum
No.because calcite is softer then feldspar
apatite will not scratch quartz topaz calcite or corundum
Talc can scratch Talc , although Talc's hardness varies it is considered a soft mineral, that can even be scratched with a finger nail. Any mineral or material with a hardness equal to or greater than 1 on the Mohs hardness scale will be able to scratch talc. Talc is the softest mineral listed on the Mohs scale, listed as a 1 on the scale which is graded from 1 through 10, with 10 being the hardest (diamond).
Yes
Gypsum
No.because calcite is softer then feldspar
Fluorite with a Mohs hardness of 4 would be scratched by quartz (with a hardness of 7). Both calcite (Mohs hardness 3) and talc (Mohs hardness 1) are softer than fluorite.
you can scratch talc becuase it is the softest mineral on the moth scale.
you can scratch talc becuase it is the softest mineral on the moth scale.
Quartz- hardness 7 on Mohs Scale. (Calcite: 3, galena 2.5, talc 1)
calcite
Between 2 and 3 because its hard enough gypsum but it can not scratch calcite because calcite is harder
Talc is supposed to be too fragile to cause a scratch on the majority of minerals.
apatite will not scratch quartz topaz calcite or corundum
According to Mohs' Hardness Scale, talc registers at a 1, whilst feldspar registers at a 6, so, no, talc cannot scratch feldspar.