- Geode (Wikipedia)
A geode (/ˈdʒiː.oʊd/; from Ancient Greek γεώδης (geṓdēs) ’earthlike’) is a geological secondary formation within sedimentary and volcanic rocks. Geodes are hollow, vaguely spherical rocks, in which masses of mineral matter (which may include crystals) are secluded. The crystals are formed by the filling of vesicles in volcanic and subvolcanic rocks by minerals deposited from hydrothermal fluids; or by the dissolution of syn-genetic concretions and partial filling by the same or other minerals precipitated from water, groundwater, or hydrothermal fluids.
- Providence Bay (Wikipedia)
Providence Bay (Russian: Бу́хта Провиде́ния, Bukhta Provideniya) is a fjord in the southern coast of the Chukchi Peninsula of northeastern Siberia. It was a popular rendezvous, wintering spot, and provisioning spot for whalers and traders in the nineteenth and early twentieth centuries. Emma Harbor (now Komsomolskaya Bay) is a large sheltered bay in the eastern shore of Providence Bay. Provideniya and Ureliki settlements and Provideniya Bay Airport stand on the Komsomolskaya Bay. Plover Bay in English sources sometimes refers specifically to the anchorage behind Napkum Spit within Providence Bay (also called Port Providence) but was commonly used as a synonym for Providence Bay; Russian 19th century sources used the term for an anchorage within Providence Bay.