| | Description | |
| Comments: | Adamantine luster; much coated on crystal faces a bright metallic black with Mn & Fe oxides. Large, relatively pure, crystalline masses of medium grain. | | Habit: | Dodecahedral, some to nearly 5 cm diameter; rhombohedral faces striated | | Colour: | Dark reddish and brownish-green or dark greenish-brown | | Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Schrader, F.C. and J.M. Hill (1915), Mineral deposits of the Santa Rita and Patagonia Mountains, AZ, USGS Bull. 582: 328. | | Associated minerals: | |
| Associates: | Epidote
| | Data | |
| Mineral Data: | Click here to view Andradite data | | Locality Data: | Click here to view Washington Camp-Duquesne District, Patagonia District, Patagonia Mts, Santa Cruz Co., Arizona, USA |
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