Another example - Mineral 13

Specimen dimensions: 4¾ x 3¼ x 1½ inches (122x85x39mm)

Specimen weight: 40 ounces (1135 grams)

Collection: personal, collected from old chromite mine (black mineral at base)

Provenance: Yancey County, North Carolina (old chromite mine)

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