| 7chjdg ((TOCHILINITE)), Grace Mine, Morgantown, Berks County, Morgantown, 2.5 x 2 x 1 cm, Thumbnail, | |
 | Black to bronze iron hydroxysulfide. |
 |
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| 7chjdg ((TOCHILINITE)), Grace Mine, Morgantown, Berks County, Morgantown, 2.5 x 2 x 1 cm, Thumbnail, | |
| Black to bronze iron hydroxysulfide. |
|