Quartz specimen. Quartz (silicon dioxide, SiO2) is a crystalline mineral. Pure quartz is transparent. Pink colour of this specimen is caused by trace impurities titanium, iron, or manganese. Quartz is defined to have hardness of 7 in the Mohs scale. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 5158 px × 3427 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |