| | Description | |
| Type Locality: | Excelsior Mine, Cerro de Pasco, Daniel Alcides Carrión Province, Pasco Department, Peru is the type locality for Gratonite | | Comments: | Found on rotting Marcasite, not many large specimens left | | Habit: | Heagonal prisms with rhombohedral terminations | | Colour: | grey | | UV Fluorescence: | none | | Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | [Amer.Min.(1939) 24, 136; www.johnbetts-fineminerals.com] | | Data | |
| Mineral Data: | Click here to view Gratonite data | | Locality Data: | Click here to view Excelsior Mine, Cerro de Pasco, Daniel Alcides Carrión Province, Pasco Department, Peru | | Photo Gallery | View Gallery (14 photos) |
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