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| Description | |
|---|---|
| Quality of samples: | not specified / average specimens |
| Confirmation | |
| Validity: | Believed Valid |
| References | |
| References: | Russell, DE "The Minerals of Fort George, Manhattan"; http://www.mindat.org/article.php/477/The+Minerals+of+Fort+George%2C+Manhattan |
| Data | |
| Mineral Data: | Click here to view Hornblende data |
| Locality Data: | Click here to view Fort George, Manhattan Island, Manhattan (New York Co.), New York City, New York, USA |