Apatite from The Pennines, England, UK
UK | |
| Day, Harry (1999) BMS Database, British Micromount Society. |
[Carbonate-rich Apatite var. Collophane] Ford, T., Sarjeant, A., Smith, M. (1993) The minerals of the Peak district of Derbyshire. UK Journal of Mines and Minerals 13, Rockbottom Publications. 16-55 | |
| [Carbonate-rich Apatite var. Collophane] Quirk, D.G. (1986): Bulletin of the Peak District Mines Historical Society 9(6), 333-386 |