Details
ColorsGrey
Origin
Fernando de Noronha archipelago, Pernambuco, Brazil
SizeMiniature
Dimensions3.0 x 2.0 x 1.0 cm
Description
A very interesting piece under the microscope! Vesicles in this olivine nephelinite contain microcrystals of orange-brown, prismatic to platy oxykinoshitalite associated with nepheline, calcite, and an apatite group mineral. An unassuming specimen in hand sample, but fairly remarkable under modest magnification! Oxykinoshitalite is a rare and complex barium potassium magnesium titanium iron layer silicate and a member of the Mica Group. Fernando de Noronha island, Fernando de Noronha archipelago, Pernambuco, Brazil. Ex. Paulo Matioli collection.
Known provenanceKnowing where your specimen comes from and who owned it adds to its story and value. Good provenance helps prove it's authentic and preserves important details about its discovery.