Which sample would be the softest on the Moh's scale?Select one:galenahighlight_offpyritehighlight_offhematitehighlight_offSphaleritehighlight_off
Question
Which sample would be the softest on the Moh's scale?Select one:galenahighlight_offpyritehighlight_offhematitehighlight_offSphaleritehighlight_off
Solution
The softest sample on the Moh's scale would be Sphalerite. The Moh's scale is a measure of the hardness of minerals. Galena, pyrite, and hematite are all harder than sphalerite. Sphalerite has a Moh's hardness of 3.5-4, while galena has a hardness of 2.5, pyrite has a hardness of 6-6.5, and hematite has a hardness of 5.5-6.5. Therefore, sphalerite is the softest of the four samples.
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