VeszelyiteZebulonite

Veszelyite and zebulonite are two rare and historically significant minerals, both of which are named after notable figures in the field of mineralogy. Veszelyite was first discovered in 1967 in the Veszelény mountain range in Hungary and is named after Géza Vészelényi, a Hungarian mineralogist. It is a hydrated sodium calcium sulfate mineral with the chemical formula Na2Ca(SO4)2·4H2O. Veszelyite typically forms as an efflorescence in arid regions and is known for its distinctive blue color. It is a monoclinic crystal system and is usually found in association with other sulfate minerals.

Zebulonite, on the other hand, was first described in 1845 and is named after Zebulon Montgomery, an American mineralogist. It is a rare manganese oxide mineral with the chemical formula MnO(OH). Zebulonite is known for its distinctive black color and is often found in association with other manganese minerals. It is a trigonal crystal system and is typically found in metamorphic rocks.

Both veszelyite and zebulonite are of interest to mineral collectors and researchers due to their rarity and unique properties. They are also significant in the study of mineral formation and the history of mineralogy. Despite their rarity, both minerals have been found in various locations around the world, including Hungary, the United States, and other countries with suitable geological conditions.