A SUPERB, old-time, complete undamaged CABINET FLOATER of arborescent, spinel-twinned copper crystals from the famous Houghton area of the Keweenaw Peninsula. It is 3-dimensional, LARGE, and extremely intricate yet not so delicate you cannot handle it. The piece was formerly in the collection of Peter Zodac, founder and first publisher of Rocks & Minerals magazine. Ex. Richard Hauck Collection. 10.3 x 5.5 x 3.7 cm