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Which Is the Softest Mineral?
sciencegeologyminerals
Quick Answer
Talc is the softest mineral, ranking 1 on the Mohs hardness scale.
The Full Story
The Mohs scale, created by German mineralogist Friedrich Mohs in 1812, ranks minerals from 1 to 10 by which can scratch which. Talc sits at 1 and can be scratched by a fingernail, which has a hardness of about 2.5. It is a hydrated magnesium silicate that forms thin, slippery layers. Talc is used in cosmetics, paper, ceramics, paint and plastics. Soapstone, a soft rock rich in talc, has been carved into bowls and sculptures for thousands of years.
Key Facts
1.Diamond sits at 10, the top of the Mohs scale.
2.Gypsum is number 2 on the scale.
3.Talc feels greasy or soapy to the touch.
YouTube Angle
Suggested video title for this topic:
"The mineral you can scratch with your fingernail."