Specimen #1 is
talc
calcite
Specimen #2 is
gypsum: variety selenite
Specimen #3 is
ulexute; variety "TV Stone"
Specimen #4 is
fluorite
beryl; variety aquamarine
Specimen #5 is
corundum
garnet
Specimen #6 is
malachite
Specimen #7 is
topaz
quartz
Specimen #8 is
Specimen #9 is
celestite
Specimen #10 is
lepidolite mica
Specimen #11 is
magnetite
galena
Specimen #12 is
halite
Specimen #13 is
Specimen #14 is
gypsym; variety selenite
ulexite; variety "TV Stone"
Specimen #15 is
Specimen #16 is
Specimen #17 is
sphalerite
Specimen #18 is
barite
Mohs Hardness of Talc is 2
Mohs hardness of Quartz is a 7.