Siderite from Leadville, Lake County, Colorado, USA
USA | |
| [var. Oligonite] AmMin 19:304 |
Frank Karasti | |
| Specimen (B.S. Butler Coll.) |
| Mineralogical Record:16(3):171-201 |
| Min. Record:20(5):388. |
[var. Manganese-bearing Siderite] Mineralogical Record:16(3):171-201 |
Julia Fisk Mine, Iowa Gulch, Leadville, Lake County, Colorado, USA