How do u test for hardness
Scratch with fingernail (2.5) then scratch with copper coin ( 3.5) then scratch with glass plate (5.5) then scratch with nail
(6.5) then scratch with masonry drill bit (8.5)
How do u test for acid and result
Add a drop of acid onto a mineral if it fizzes straight away it is calcite
Density
Work out mass using a scale
Work out volume using a eureka can add water wait for unit to stop dripping add the mineral collect dispersed water in a measuring cylinder wait for it top stop dripping add
Use the equation. Density = mass/volume