- Esmeralda Co., Nevada, USA
- Toenail, 2.9 x 2.9 x 1.3 cm
Thumbnail. A rare hydrated iron oxide, apparently not well studied as yet because the MINDAT page is basically nonexistent. This tube of flakes and bits of the material is particularly important for such studies because this is the original stuff from the author, with label. It dates to 1912, and the type locality. The author, and donor of the specimen listed here, described this species in 1901. This is mentioned in the Minerals of Nevada. Ex. Academy of Natural Sciences Philadelphia Collection.