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 || |
|Aegirine showing color zoning from 3M Big Rock Quarry, Pulaski County, Arkansas. This is from a quartz xenolith collected in the 1980's. The aegirine formed from these xenoliths is extremely zoned. I ran EPMA on one of these and the composition is essentially identical for all the zones. Apparently the colors reflect the oxidation states of the Fe and not a change in %. Imaged with a Canon 40D, 30mm B&L lens and stacked with Combine Z. FOV about 1.5 X 2mm |
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