Chalcopyrite wiskers

Small but charming specimen, presenting chalcopurite crystals, developed on the top of quartz crystals and overgrought in some places by black spahlerite crystals. Chalcopyrite is well terminated and with sculptured  faces with ratio lenght  to width   more than 6 to 1,  what give me a reson to call them wiscers. This kind of chalcopurite is very rare and very attractive, what is very difficult to present on the pictures ( for what I would like to apologyse).