Phillipsite is very common at Moeraki. It may occur as large single crystals or clusters with distinctive cross-hatching on the faces. Water-clear balls of phillipsite are very common, recognised by the four sides to each point on the ball. These balls often have a milky centre or a hollow core.
The most outstanding phillipsites are the cruciform twins that may be found, growing either on the cavity walls or perched on calcite, most spectacular on a calcite tip. These are also associated with barite, occasionally.
Below: Phillipsite-K, Moeraki Point, Otago, New Zealand. Width of view 11.5mm.
