What can calcite scratch?

What can calcite scratch?

Hardness

mineral	Mohs hardness	observations on the minerals
gypsum	2	can be scratched by the fingernail
calcite	3	very easily scratched with a knife and just scratched with a copper coin
fluorite	4	very easily scratched with a knife but not as easily as calcite
apatite	5	scratched with a knife with difficulty

What minerals could talc scratch?

According to the scale, Talc is the softest: it can be scratched by all other materials. Gypsum is harder: it can scratch talc but not calcite, which is even harder.

What mineral Cannot be scratched by calcite?

Mineral Hardness Test Video

Mineral	Hardness
Calcite
	INTERMEDIATE Mineral cannot be scratched with a fingernail but can be scratched with a steel nail.
Gypsum
	SOFT Mineral can be scratched with a fingernail

Does talc scratch easily?

Talc is known for being the softest mineral on earth. It is number 1 on the Mohs hardness scale, and can be easily scratched by a fingernail.

What are two objects that will scratch fluorite?

Since Fluorite is a 4 on the scale it means that fluorite can scratch all the minerals below it but not be scratched by them. Also if a penny can scratch a mineral it rates a 3, a fingernail is 2.5, knife blade 5.5, glass 5.5 and steel file 6.5.

Can apatite can scratch calcite?

Quartz is a 7. It can be scratched by topaz, corundum, and diamond. Quartz will scratch minerals that have a lower number on the scale. Fluorite is one….Mohs Hardness Scale.

Hardness	Mineral
2	Gypsum
3	Calcite
4	Fluorite
5	Apatite

Can minerals scratch themselves?

A minerals rating on the hardness scale is determined by a scratch test. For example the diamond is the hardest mineral because no other mineral on the scale is able to scratch it. Since Fluorite is a 4 on the scale it means that fluorite can scratch all the minerals below it but not be scratched by them.

Can calcite scratch glass?

With a hardness of 3, calcite is softer than glass (5.5), so it does not leave a scratch.