Galena is lead sulfide and the world's chief ore of lead. It is metallic,brittle and typically forms cube-shaped crystals in hundreds of localities. Galena has perfect cubic cleavage,and when broken nearly all the small bits can be seen to display a cube shape. The area underground in the vicinity of St. Joe,Missouri is host to a number of lead and zinc mines,in which galena,sphalerite,calcite and fluorite are abundant and well crystallized | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Arem, Joel |
Taille de l’image : | 3855 px × 2553 px |
Model Release : | Non requis |
Property Release : | Non requis |
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