Okenite, Gyrolite and Quartz from India
Contributed by: FMS Admin
Date: Feb 26th, 2026
Locality: Malad Quarry, Malad, Mumbai Suburban District, Salsette Island, Konkan Division, Maharashtra, India (See on Mindat)
Size: 5.5 x 4.5 x 6.5 cm
Weight: 158 g
Description:
Small sample of Okenite mixed with quartz.
The gyrolite should be present (as per the label) but don\'t ask me where to observe it because I can\'t answer.
The sample is an agglomeration of acicular spherical formations of Okenite, with transparent white quartz crystals that mix with the Okenite and emerge in some areas.
Okenite spheres are mostly damaged; some of them partially fractured and only the smallest and protected by ravines/vugs are still intact.
Fluorescence is present in both LW and SW.
Some of them are creamy-yellow fluorescent, others bluish-white.
The sample is rather trivial as a whole and becomes interesting (and sometimes spectacular) when observed under a microscope.
Originally posted by Stefano Buzzoni on Nature's Rainbows.
Summary of luminescence responses:
Okenite (Mindat) (RRUFF)
- Fluorescence under Longwave (365nm LED) UV light: Blue
- Fluorescence under Shortwave (254nm Lamp/Mercury) UV light: Blue