| | Description | |
| Colour: | white, pale red, blue | | Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Langhof, J., Holtstam, D. & Gustafsson, L. (2000): Chiavennite and zoned genthelvite-helvite as late-stage minerals of the Proterozoic LCT pegmatites at Utö, Stockholm, Sweden. Geologiska Föreningens Förhandlingar 122, 207-212 | | Data | |
| Mineral Data: | Click here to view Apatite data | | Locality Data: | Click here to view Utö Island, Haninge, Stockholm, Södermanland, Sweden |
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