1/4

Prehnite : Ca2Al2Si3O10(OH)2, Gyrolite : NaCa16Si23AlO60(OH)8·14H2O

Copyright © Tony Peterson
 
 
 
minID: 53V-YV8

Prehnite : Ca2Al2Si3O10(OH)2, Gyrolite : NaCa16Si23AlO60(OH)8·14H2O

Copyright © Tony Peterson  - This image is copyrighted. Unauthorized reproduction prohibited.

This specimen, 10 cm tall, was sold to me as okenite on prehnite but it resembles typical gyrolite specimens. There are a few fluorapophyllite crystals on the zeolite balls (see closeup photos). One stereo view in this series. Collection and photo, T. Peterson.

This photo has been shown 1641 times

Photo added: 12th Oct 2008

Other Views - click to switch