misng TETRAHEDRITE, SPHALERITE, Casapalca Mine, Peru, 8 x 7 x 5 cm, Cabinet | |
Undamaged specimen of black Tetrahedrite and black Sphalerite crystals. Crystals are similar in appearance but the Sphalerite has triangular markings that are paralled to the opposite edges of the crystal faces and Tetrahedrite has striations parallel to the edges of the crystal. |