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specimen
Details
ColorsBlue, Yellow, Black, Grey
Origin
SizeSmall
Dimensions7.5 x 6.5 x 4.0 cm
Species
Description

Corundum Pegmatites are cool. You need an excess of aluminum in absence of excess silica to form this, which can happen in evolved alkaline magmas (Syenite, Nepheline Syenite, and their pegmatites), such as this rock from the Ilmen alkaline complex, which is a body mainly composed of Syenite and Syenite Pegmatites. Similar Corundum bearing rocks can be found in Ontario (near Bancroft), Norway (Seiland), Kenya (Garba Tula), and Myanmar (Mogok).

Ilmenogorsky alkaline complex, Ilmen Mountains,

Chelyabinsk Oblast, Russia

7.5x6.5x4cm

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.
Greater New York City Area
Purchase

Unknown previous owners

Earth

Origin