Search Archived Mineral Specimens
- Featured in Special Editions
- Nancy pegmatite, Chacabuco dept., San Luis, Argentina
- Miniature 4.5x2.5x3cm
- phosphate , pegmatite mineral
Bobfergusonite is a member of the Wyllieite group and is a Na-Mn-Fe phosphate. It forms nodules in pegmatites, much like most primary phosphates, a result of early crystallization and later altered by metasomatism while the remaining liquid cools and solidifies. It is remarkably similiar to Alluaudite. It is very rare and found in only two localities in the world.