Serpentine Subgroup from Ishpeming Greenstone belt (Marquette Greenstone belt), Marquette County, Michigan, USA
USA | |
| [var. Picrolite] Heinrich, E. W., Robinson, George Willard (2004) Mineralogy of Michigan (2nd ed.) A.E. Seaman Mineral Museum and Michigan Technological University. 252pp. |
Ropes Gold Mine, Ishpeming Greenstone belt, Marquette County, Michigan, USA