Copper -chain of Spinel twins
Proprietary Mine, Broken Hill, Yancowinna County
New South Wales,
5.2 x .8 x .4 CM (small cabinet/ large miniature)
A perfect elongated spinel twin crystal forms the base for radiating smaller spinel twins that are epitaxially oriented. In pristine, undamaged condition this is a really unusual choice old Broken Hill (Australia) piece. The secondary crystals are mostly oriented in two lines or chains some of which form mirror copies of each other. The smaller crystals reach 1 CM and all have textbook perfect forms.