A fantastic 4 mineral miniature with each mineral species well represented in crystalline form. A central crystal of rare Cassiderite surrounded by tiny crystals of Siderite highlight one side, while a series of larger crystals of blue Fluorapatite highlights the Arsenopyrite visible on the reverse. An excellent combination mineral specimen. Minas da Panasqueira, Covilhã, Portugal. 1.65" x .75" x 1", 1.4 oz.