Botryoidal Turkish Crater Agate with Hematite & Goethite spodumene on a layer of chalcedony

on a layer of chalcedony over a trimmed basalt matrix pocket

Size: 54 x 17 x 8 mm

Great for jewelry

Pyrite after pyrrhotite pseudomorph is a mineral specimen that shows the replacement of pyrrhotite by pyrite

Botryoidal Turkish Crater Agate with Hematite & Goethite spodumene on a layer of chalcedonyLustrous botryoidal crater agate cluster with hematite & goethite. Size: 95 x 55 x 45 mm. 352 grams From Cubuk, Ankara Province, Turkey Botryoidal agate is a type of agate that has a rounded, grape like appearance. It is formed when silica rich water fills cavities in rocks and deposits layers of chalcedony, a microcrystalline variety of quartz. The botryoidal shape is created by the growth of tiny spherical crystals on the surface of the chalcedony.