- Barranca Mine, Durango, Mexico (TYPE LOCALITY)
- Thumbnail, 0.5 x 0.5 x 0.4 cm
A huge and significant crystal of this rarity! Durangite is a rare arsenate and this is from the type locality. True, larger crystals have since been found in Utah among other places, but of different visual habit. this is, for the type locale, a killer!