e-Rocks seller and field collector Tasos Tsinidis has recently been collecting these fine sanidine specimens at the locality, Kakourou Peak, Promachoi, Pella Prefecture, Central Macedonia, Greece.
Tasos also kindly posted these photos of the collecting site, plus the following tip!
"Easy locality as you park and collect on the forest road, many crystals to find,cool forest with plenty of shadow and cold water from the river."
Always great to see and hear collecting stories and see minerals in situ - thanks Tasos.