The piece that we show is formed by white dolomite crystals and metallic marcasite crystals, from a quarry in devonic and silicified limestones, where the collection of pieces was banned in October 2007. Dolomite is found in a color between colorless, white, Gray, reddish white, brownish white or pink. It is colorless in transmitted light, its brightness can be vitreous, sub-vitreous, resinous, waxy or pearly, its hardness is medium and its trigonal crystalline system. They are usually found as drusen or groups of small rhombohedral, prismatic or tabular crystals, from white to roasted to pink, or it is found in a massive way, presenting a yellowish or brown tone due to the presence of iron, or presenting a pink whole by presence Manganese Samples have been found from transparent to opaque and are located in sedimentary rocks, in igneous rich in Mg or in geodes, being a fragile carbonate. However, marcasite has a higher hardness, is opaque, has a yellowish brass color, brightness between metallic and sub-metallic, with an orthorhombic crystalline system, which has very fragile tabular, pyramidal or globular crystals. His habit is typically tabular, pyramidal or prismatic in starry form. In short, we have a beautiful piece here because of the contrast between the light color of the dolomite and the metallic color of the marcasite.

Acrylic box is included