Limonite and anthosiderite minerals. Limonite (orange) is a field name for various iron oxides and hydroxides. It is found in surface oxidation zones of iron deposits,or as a residue of carbonate and silicate breakdown in tropical conditions. Anthosiderite (purple) is composed of Quartz and Goethite minerals. It is a pseudomorph,meaning the minerals have encrusted or infiltrated a pre- existing structure. This sample measures 75 millimetres across | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Wiersma, Dirk |
Taille de l’image : | 5275 px × 4270 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |