Petr Hykš:
Limonite coating on jurassic sediments (micro-capture, 30x)
Petr Hykš:
Limonite coating on calcite crystals
Petr Hykš:
Limonite coating on jurassic limestone
Petr Hykš:
Quartz coated by hematite
Petr Hykš:
Quartz coated with pale yellow ?limonite/chalcedony
Petr Hykš:
Siderite and limonite concretions with other Fe oxides