| | Description | |
| Comments: | Identified on five small pieces obtained from a giveaway table at a mineral conference. Probably is more common. Xls dessicate in warm light which is a property exhibited by kastningite from Foote Mine and from Silbergrube in Germany. This property is distinct for the species. Collectors should check their material for xl sprays that look like colorless stewartite. | | Habit: | very small colorless clusters on siderite | | Colour: | colorless | | Quality of samples: | not specified / average specimens | | Rarity at site: | Very Rare | | Confirmation | |
| Validity: | Confirmed | | Confirmation Methods: | Visual Identification
| | References | |
| References: | Jason B. Smith. | | Associated minerals: | |
| Associates: | Eosphorite
Siderite
| | Data | |
| Mineral Data: | Click here to view Kastningite data | | Locality Data: | Click here to view Emmons Quarry (Uncle Tom Mt. Quarry), Uncle Tom Mt, Greenwood, Oxford Co., Maine, USA |
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