Dry Gill is one of the main sources of campylite in the world and at Dry Gill it is the dominant lead mineral. Campylite is a form of phosphatian mimetite and we found 4 'forms' of campylite [Pb5(AsO4)3Cl].
The 4 forms included:
- Lime green campylite
- Olive green campylite
- Yellow campylite
- Lime green mimetite with needles
|Lime green form campylite under a microscope clearly showing the hexagonal cross section through the curved, barrel shaped crystals of campylite.|
|A lime green form of mimetite with unusual spikey outgrowths/needles under a microscope.|
|Distinct yellow form of campylite surrounded by psilomelane which is a form of manganese oxide (approximately Mn02).|
Psilomelane is commonly associated with mimetite.
|A single large lime green form campylite on quartz.|
|A group of small lime green form campylite on quartz.|