1) Orthorhombic mineral 2) Zinc mineral 
Goslarite is a hydrated zinc sulfate mineral (ZnSO4·7(H2O)) which was first found in the Rammelsberg mine, Goslar, Harz, Germany. It was described in 1847. Goslarite belongs to the epsomite group which also includes epsomite (MgSO4·7H2O) and morenosite (NiSO4·7H2O). Goslarite is an unstable mineral at the surface and will dehydrate to other min...
Goslarite (white vitriol) is hydrated zinc sulphate. It is a rare mineral precipitated from water seeping through the walls of lead mines and is formed by the decomposition of sphalerite.
Zinc sulfate