Very nice ALPINE AKTINOLITH STUFE from the ZILLERTAL.
Abundant, shiny, black-green crystals in mother rock.
There are several AKTINOLITH sites here - this one, from an old collection, did not give a more detailed location, just Zillertal.
Weight: 550 g Dimensions: 10 x 9 x 5 cm xx to 3.5 cm