The Alabama Mineral and Lapidary Society is a non-profit organization
for people interested in geology,
mineralogy, paleontology and lapidary arts.
Photo Gallery - Minerals Photo Gallery
| Photographed by Henry Barwood || |
|Here are a pair of images. The first one is an old scanned slide (non stacked) from my presentation on the Arkansas syenites. The second image is a portion of the same specimen. Still hard to image, but I think the new one is considerably better. FOV is about .4 X .5 mm. These betafites were fairly common in interior pegmatites at 3M, but always as tiny crystals. They are rare in secondary pegmatites. New image with a Canon 40D, 23 mm Nikon objective in a tube configuration with a 300mm Canon FD telephoto. Stacked using Combine Z software |
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