Location: Minerva No. 1 Mine, Ozark-Mahoning group, Cave-In-Rock Mining Sub-District, Hardin County, Illinois, USA
Dimensions: 6 × 6.5 × 4 cm
Weight: 149.9 grams
Location: Minerva No. 1 Mine, Ozark-Mahoning group, Cave-In-Rock Mining Sub-District, Hardin County, Illinois, USA
Dimensions: 6 × 6.5 × 4 cm
Weight: 149.9 grams
