Gypsum specimen. Gypsum is a soft mineral composed of calcium sulphate dihydrate (CaSO4 2H2O). Gypsum is defined to have hardness of 2 in the Mohs scale. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Turtle Rock Scientific |
Taille de l’image : | 5161 px × 3429 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |