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Calcite with fluorite

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Description

Another Christmas gift, this is a huge cluster of golf-ball sized calcite crystals with hundreds of white octahedral fluorite crystals! This is from Dalnegorsk, Russia. The large calcite crystals are highly fluorescent and react to both LW and SW UV. LW causes the crystals to show red and the SW turns them orange. You can also see the difference between a filtered and unfiltered UV lamp. In order to get a proper exposure, I had to leave the camera shutter open for almost two minutes. This let in the red light beautifully for the LW fluorescence, but it also let in the purple light from the unfiltered lamp giving the whole piece a purplish cast. The SW light has a great filter that blocks out any visible purple light so all you see is the light coming from the specimen.

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My light box photos (unless otherwise stated) are free to download in their original size. You may use it for what you wish so long as it is not for profit or involves removing my watermark. These images are large enough to be used as a wallpaper! DO NOT repost on any other site without my permission! You may like or reblog these images from my tumblr here cc-da-wolf.tumblr.com/tagged/rock-collection

My rock collection--> crystalcircle.deviantart.com/g…
Geeen octahedral fluorite by CrystalCircle Calcite and two UV lights by CrystalCircle Aragonite lightning bolts by CrystalCircle

Image size
13662x8280px 31.8 MB
Make
NIKON CORPORATION
Model
NIKON D810
Shutter Speed
10/1 second
Aperture
F/1.0
ISO Speed
64
Date Taken
Jul 22, 2017, 1:59:04 PM
© 2018 - 2024 CrystalCircle
Comments2
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TankaaKumawani's avatar
I'm surprised you didn't have major noise issues on the long exposures.