| | Description | |
| Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Pezzotta, F., & Guastoni, A. (2007). Hambergite, helvite e pirofanite nelle pegmatiti elbane. Rivista Mineralogica Italiana, 3/2007, 166-168. |
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