Acicular intergrowth of white gonnardite-natrolite on grey botryoidal thomsonite-Ca. Width of view 3.5mm. Stack of 70 images.
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Acicular intergrowth of white gonnardite-natrolite on grey botryoidal thomsonite-Ca. Width of view 3.5mm. Stack of 70 images.
Click on the image below for a higher resolution version.