3D sketchfab model of the ternary system quartz – nepheline – kalsilite

Another old model brought back to life. This is the Click on the image below to see the model in action.  This is the ternary system quartz – nepheline – kalsilite, also called petrogeny’s residua system, which is used to describe the composition of many cooled residual magmas and the genesis of very under saturated alkaline rocks.

Ternary system quartz - nepheline - kalsilite

More on this classification, used for cooled residual magmas, on Alessandro Da Mommio’s website, for example his page on Tracheite.