Oxykinoshitalite with Ulvospinel, Nepheline, Olivine, Augite, Calcite, Apatite, Potassium Feldspar on Olivine Nephelinite - image 1

Oxykinoshitalite with Ulvospinel, Nepheline, Olivine, Augite, Calcite, Apatite, Potassium Feldspar on Olivine Nephelinite

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.

Unknown Owner

Product details

Species

Calcite, Apatite, Olivine, Feldspar, Augite, Nepheline

SizeMiniature

Dimensions3.0 x 2.0 x 1.0 cm

Locality

Brazil, Pernambuco, Fernando de Noronha archipelago

Added on10/23/2024

Comments

Known provenance

2024/08