Twinned Colemanite

Kestelek Mine, Mustafakemalpascha, Bandirma  Turkey (09/2005)

Specimen size: 10 × 7 × 5 cm = 3.94” × 2.76” × 1.97”
Main crystal size: 1.4 × 1 cm = 0.55” × 0.39”