Classic combination specimen of Apatite on Quartz with Siderite from the Barroca Grande Mine, Panasqueira. Crystals of lustrous colour zoned green to colourless Apatite measure to 3.4cm. Formed on a gemmy colourless well formed prismatic crystal of Quartz, with black crystals of Ferberite at the specimen base. A later development of light biscuit coloured inter-grown lenticular Siderite crystals, has partly overgrown the preceding minerals. A very characteristic combo specimen from the mine.