| Title | Chalcopyrite with idaite, from Ugo, Japan |
| Description | This sample is mostly tarnished yellow chalcopyrite, CuFeS2, but contains minor amounts of browner idaite, Cu5FeS6, as inclusions. Chalcopyrite is a major copper ore mineral. The specimen is 9 cm across. |
| Location | Japan. Near Ugo. |
| Photographer | Darla Sondrol. 2001-07-09. |
| Collection | University of North Dakota Mineralogy Collection #118. |
| Key words | chalcopyrite, idaite, Ugo, Japan |
| Tech details | 795 KB. Hand specimen. Fujifilm FinePix S1Pro digital camera; 60mm AF Nikon micro lens. |
| GeoDIL number | 1056 |
 |