Talc
caca
gypsum
calcite
quartz
TopazTaaffeiteThomsoniteTanzaniteTiger-eyeTourmalineTsavoriteTugtupiteTurquoise
Soft is a four letter word. It uses the letters fsto.
The mineral is lead.
Graphite is a very soft mineral beginning with "g". Interestingly enough, it is composed of carbon, just like diamond, which is the hardest mineral known!
suede
soft
No, a mineral is a hard substance
The mineral is graphite.