Description: 1 - Quartz var. chalcedony (geode) 2 - Quartz + pyrite + other sulphide, maybe galena or sphalerite. 3 - Quartz var chalcedony (jasper) 4 - Gypsum (rose desert) 5 - Azurite + malachite + limonite? 6 - Smoky quartz pebble? 7 - Quart or calcite (geode) 8 - Quartz (tiger's eye) 9 - Quartz var. chalcedony (agate slice) 10 - Not recognized

All pictures, text, design © Forum FMF 2006-2025