Craigahulliar Quarry, Portrush, County Antrim, Northern Ireland, UK

Chabazite var. Phacolite with natrolite(?), obtained in 1991. Specimen 1538 in the collection of the photographer, Alan Goldstein. FOV = 7 mm

© Alan Goldstein

7.4 x 6.4 x 5.9 cm. Phacolite is the uncommon lens-shaped variety of chabazite-Ca due to twinning/multiple twinning of rhombohedrons. This rare specimen features glassy, amber phacolite crystals filling and lining numerous vugs in the basaltic matrix. It hails from the much less well-known Craigahullia Quarry on Northern Ireland. Ex. Richard ...

© Rob Lavinsky & irocks.com

7.4 x 6.4 x 5.9 cm. Phacolite is the uncommon lens-shaped variety of chabazite-Ca due to twinning/multiple twinning of rhombohedrons. This rare specimen features glassy, amber phacolite crystals filling and lining numerous vugs in the basaltic matrix. It hails from the much less well-known Craigahullia Quarry on Northern Ireland. Ex. Richard ...

© Rob Lavinsky & irocks.com

Colourless chabazite var phacolite crystals. Specimen collected by Harry J. Foy. FOV 20mm. Photo - Trevor Boyd/ Causeway Minerals Specimen - Harry J. Foy Estate

© Trevor Boyd/ Causeway Minerals

A matrixless piece of colorless chabazite. I acquired this from Rock Deco (Paul Matt and Barbara Matt - Tucson, Arizona). It came with a second label indicating that it came from the collection of Robert D. Lawrence (Tucson, Arizona).

© Alexander Wong