Stilbite Subgroup, Apophyllite Group, Quartz

Specimen ID: 7N9-A27

Mineral(s)
Stilbite Subgroup : M6-7[Al8-9Si27-28O72]·nH2O
Apophyllite Group : AB4[Si8O22]X · 8H2O
Quartz : SiO2
Locality
Mindat locality:
Dimensions
15inches x 10inches x 10inches
Events

Photo added to mindat.org

Clusters of clear pyramid-tipped apophyllite and sharp spear-teeth of quartz growing on peach-colored stilbite sheaves decorate the interior of this small cavity. I managed to save 90% of it by prying loose the 15"x10"x10" chunk of basalt it formed in.
Aaron Wiltsey - 3rd October 2007
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