Graphite crystals can be mounted on a magnetic puck suitable for STM imaging. This makes natural crystals a cost-effective alternative to Highly Oriented Pyrolitic Graphite (HOPG) for imaging carbon.
Raman spectra of natural graphite crystals from Tanzania cleaved versus natural surfaces. Michigan Technological University- John A. Jaszczak 8/26/2009
Raman Spectra of Natural Crystal from Tanzania
Flat, large crystals are characteristic of crystals that are suited for STM imaging of carbon atoms. Crystal sizes for STM substrates range from 2.0 to 5.0 mm across.
Crystals are mounted using silver paint to metal pucks to ensure the product is conductive. The item is shipped in a secure case to avoid shipping damage.