dumortierite
ck_admin
March 24, 2021
Its name honors Eugene Dumortier, a paleontologist from Lyon (France )(1802-1873). It occurs most commonly as quartz inclusions, it is then called “blue aventurine”.
orthorhombic
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descloizite
ck_admin
March 24, 2021
Its name honors the French mineralogist Alfred Des Cloizeaux (1817-1897), it was discovered in 1854 in the Sierra de Cordoba in Argentina. The best crystals are from Namibia. The mottramite is a vanadate of lead and copper.
iolite
ck_admin
March 24, 2021
It was also known as “dichroïte” (because of its strong dichroism) or “iolite” (because of its purple color), the anglo-saxons still call it by that name. It honors the name of the French geologist Cordier, Professor at the National Museum of Natural History in Paris.
childrenite
ck_admin
March 24, 2021
Discovered in 1823, its name honors the English mineralogist John George Children (1777-1852). It is very close to the eosphorite and in its chemical composition iron is the dominant on manganese, unlike eosphorite where manganese is dominating.
