Mineral 21

Specimen dimensions: 5¾ x3¾ x1¾ inches (146x95x45mm)

Specimen weight: 16¼ ounces, (463 grams)

Collection: Personal

Provenance: El Desierto Mine, Potosi, Bolivia

For reference: the U.S. penny is 0.75 inches [19.05 mm] in diameter.

(and remember, 16 ounces = 1 lb)