David K. Joyce


5.8x2.2x1.8 cm
Bear Lake Diggings
Haliburton Co.
Ontario, Canada


Item number: 26374

This is a very nice twinned crystal of this unusual amphibole group mineral. It shows notches on the termination which are re-entrant angles. As well, there are lines on two opposite sides of the crystal which delineate the twin plane and boundary between the two twin members. Nice example!