Use Mohs' hardness scale to answer the following
question.
Mohs' Hardness Scale
softer...
![subject](/tpl/images/cats/biologiya.png)
Use Mohs' hardness scale to answer the following
question.
Mohs' Hardness Scale
softer
Talc
fingernail
(2.5)
Gypsum
2
Calcite
Fluorite
glass
(5.5)
Apatite
Orthoclase
Quartz
Topaz
steel nail
(6.5)
Corundum
Diamond
harder
Turquoise has a hardness of about 6. Which two materials could turquoise
M
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