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Gyrolite forms ndividual nodules that can accompany minerals such as apophyllite, okenite and many of the zeolite group of minerals. Gyrolite forms inside of volcanic bubbles called vesicles.
Ca2Si3O7(OH) H2O - Hydrated calcium silicate hydroxide
Class:
Subclass:
Colorless, white, green, brown
White
Vitreous to dull
Transparent to translucent
2.3
3 - 4
Perfect
Uneven
Prismatic crystals, usually forming botryoidal or spherical aggregates, granular.
Non-fluorescent
Frequency:
Uncommon
Origin:
Hydrothermal in basalt cavities and in the Alpine-type veins, commonly associated with calcite, and other zeolites.
Occurence:
Poona, India
Application:
Mineral Specimen
Mineral Gallery

 
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