Apatite (partly with moonstone iridescence), on striated gneiss - 
Cadlimo, Gotthard area, Ticino, Switzerland
 
Crystal clear to milky Fluorapatite crystals (up to 5 mm, some with bluish moonstone iridescence), that contrast well with the matrix of dark brown limonitic ankerite on striated gneis. A beautiful and particularly rich specimen, from one of the best Apatite occurrences in the Gotthard area (cf. LAPIS 12/2011). Found in October 2007, ex Stefan Weiß collection