Description
TINGUAITE SPHERE
This is the polished greenish-gray tinguaite sphere. Diameter: 2.1″ (53mm). Weight – 7.8oz (221 grams). Origin: Russia, Karelia.
Some information about tinguaite:
Tinguaite is an undersaturated, medium-to coarse-grained, igneous rock consisting of essential alkali feldspar, nepheline, and aegirine (with or without sodic amphibole or biotite). Tinguaite is the hypabyssal equivalent of phonolite.
Here you will find other tinguaite spheres >>>
