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| Description | |
|---|---|
| Quality of samples: | not specified / average specimens |
| Confirmation | |
| Validity: | Believed Valid |
| References | |
| References: | Earth Science v.19, no. 2, p.98. (1966) |
| Data | |
| Mineral Data: | Click here to view Lake Superior Agate data |
| Locality Data: | Click here to view Keweenaw Co., Michigan, USA |
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