| | Description | |
| Comments: | Frondel (1956) noted: "Clarkeite has been said to occur in reddish-brown gummite at the Ruggles pegmatite, Grafton Center, New Hampshire, but it was not observed in specimens from this locality examined in the present study." As gummite and other minerals were frequently reported from this and other localities without data, frequently as wishful thinking, the clarkeite folklore is unbelievable given the thoroughness of Frondel's uranium mineral research. | | Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Erroneously Reported | | References | |
| References: | Discredited by Clifford Frondel (1956) Mineral Composition of Gummite, American Mineralogist 41:539-568. | | Data | |
| Mineral Data: | Click here to view Clarkeite data | | Locality Data: | Click here to view Ruggles mine, Grafton, Grafton Co., New Hampshire, USA |
|
