Lustrous (but not brilliantly so) arsenopyrites rise in parallel (mostly) from a massive arsenopyrite matrix. Although the Ojuela Mine remains a highly productive mineral specimen locality, arsenopyrite specimens from here are rarely seen: of the 3659 Ojuela Mine mineral photos on Mindat, only seven contain arsenopyrite, and of these, arsenopyrite is the main species in just two specimens. A desirable rarity for such a common species!