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| Description | |
|---|---|
| Quality of samples: | not specified / average specimens |
| Confirmation | |
| Validity: | Believed Valid |
| References | |
| References: | Arthur Smith, Frank Roberts, Denise Bicknell (2008) Mineral News, 24, #1, 6-7. |
| Data | |
| Mineral Data: | Click here to view Amphibole Group data |
| Locality Data: | Click here to view Petrick pegmatite, Kingsland Granite Company quarry (Petrick quarry), Llano Co., Texas, USA |
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