| | Description | |
| Quality of samples: | not specified / average specimens | | Confirmation | |
| Validity: | Believed Valid | | References | |
| References: | Blass, G., Graf, HW., Kolitsch, U., Neue Funde und Mineralien aus der Eifel, Mineralien-Welt 1/2002 | | Data | |
| Mineral Data: | Click here to view Halloysite data | | Locality Data: | Click here to view Stolz Quarry (Graulai; Graulay; Grauley), Hillesheim, Eifel Mts, Rhineland-Palatinate, Germany |
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