These are individual Northwest Africa or NWA 4293 formerly known as NQ10

Beautiful specimen of well crystallized black augite crystals covering orange calcite matrix

Dimensions: 102x74x62 mm / 4x3x2

Dimensions: 53x26x40 mm / 2

Product ID: MGIO95187   (Appraised at $1

Tetrahedrite, Pyrite, Calcite and Quartz Crystal Cluster | 42.21 Grams | Lima Peru | SO24 Morganite These are individual Northwest AfricaTetrahedrite crystals are fascinating minerals known for their distinctive tetrahedral shape and shiny, metallic luster. It typically forms in well defined tetrahedral crystals, which can be grouped in clusters. The color range includes shades of metallic gray, black, and sometimes reddish hues due to the presence of copper and other trace elements. Tetrahedrite is commonly found in hydrothermal veins and is often associated with other minerals such