Olivenite

A first class Olivenite from the famed Kamariza mines, around and beneath the town of Kamariza, now named Agios Konstantinos.  This classic mining district lies a few km inland from the coastal port of Lavrion.  The gossan matrix, composed of iron oxides with an earthy, reddish-brown limonitic coating, forms a large shallow vug some 8 x 4 cm that is completely lined with small, but perfectly developed emerald to grass-green Olivenite crystals.  The stubby acicular crystals, around 1 mm long, form dense rosettes covering the entire surface of the vug.  A superb specimen from Kamariza.