| | Description | |
| Comments: | The Stewart is probably most famous for the bornite and tennatite specimens found there. I have one very interesting specimen consisting of a single needle of betekthinite to 1.5cm included within a translucent, doubly terminated calcite scalenohedron to | | Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | J.A. Lorengo collection; U.S. Geological Survey, 2005, Mineral Resources Data System: U.S. Geological Survey, Reston, Virginia. | | Data | |
| Mineral Data: | Click here to view Quartz data | | Locality Data: | Click here to view Steward Mine, Butte, Butte District, Silver Bow Co., Montana, USA |
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