Wollastonite group - PL spectra
Bustamite:
- Brownish-orange bustamite – 1.85 ct – Kalahari Manganese Field, South Africa
 - Brown bustamite - 24.55 ct - Unknown Locality
 
650 nm: Mn2+Not available
Not available
590 nm: Mn2+
560 nm: Mn2+