MT37AL9: Floater polycrystalline growth of twinned crystals of Microcline (barium-rich variety hyalophane), from the classic Busovaca deposit, practically the only locality that has provided good collector specimens of this variety. The crystals are of good size, with very distinct double Baveno-Manebach twinning, translucent, lustrous, with abundant Rutile inclusions, which is unusual in this type of specimen.
Zagradski Potok Mine, Zagradski Creek, Busovača, Central Bosnia, Federation of Bosnia and Herzegovina  Bosnia-Herzegovina

Specimen size: 9.5 × 5.4 × 5.8 cm = 3.74” × 2.13” × 2.28”

Main crystal size: 8 × 4.6 cm = 3.15” × 1.81”