Because of the mountain slope
The unknown mineral has to have a smaller hardness number (meaning it’s softer). It’s hardness can be between 1-7. Some minerals it could be (and their hardness) are:
quartz-7
orthoclase-6
apatite-5
fluorite-4
calcite-3
gypsum-2
talc-1
The Thermosphere feels very cold to us because of its low Thermal Energy. There are very few particles in the Thermosphere, so even if they were very, very<span> hot, it would feel cold.</span>