Crystal Models available
Dr Phillip M. Halleck, Prof. emeritus, Penn State
Description of Available Specimens
How many pieces are available: Large Collection
~ 50 plastic ball crystal models of a wide variety of minerals made by my mineralogy-nut parents in law. Also supply of plastic balls and templates for making additional models.
These need a home where they will be used in mineralogy and crystallography education. Will donate and ship to accredited university or museum.