MD16I2: Parallel growth of twinned crystals, very clear and bright, on matrix.
The specimen is from John. S. White collection and we’ll send the label with the sample.
Tsumeb Mine, Tsumeb, Otjikoto Region  Namibia

Specimen size: 5 × 3 × 3.3 cm = 1.97” × 1.18” × 1.30”

Main crystal size: 2.8 × 2.5 cm = 1.10” × 0.98”