A dodo egg is a renewable food item that is randomly left behind by a dodo bird. Dodo eggs are large and oval in appearance with a light blue shell with a wavy pattern or darker areas.
Igneous rocks are formed from the solidification of molten rock material. There are two basic types. Intrusive igneous rocks crystallize below Earth's surface and the slow cooling that occurs there allows large crystals to form. Examples of intrusive igneous rocks are diorite, gabbro, granite, pegmatite, and peridotite.
A great many valuable ore minerals, such as native gold or silver or metal sulphides, are deposited along with gangue minerals, mainly quartz and/or calcite, in a vein structure. A vein system is a group of discrete veins with similar characteristics and usually related to the same structure.ribbon structures parallel to vein walls. *includes 'porphyry' copper type deposits. *extensive alteration zones with varying amounts of sericite, quartz, calcite,doIomite, pyrite, orthoclase, chlorite and clay minerals.