Exceptional and very rare Oregon opal with visual effect of being underwater when held to light.obtained at Opal Butte Mine. Oregon, USA
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Close-up of a meteorite sample, showing a ceramic-like refractory inclusion (in pink). Refractory inclusions are the oldest-known rocks in the solar system (4.5 billion years old). An analysis of uranium isotope ratios showed that a long-lived curium isotope was present early in the solar system when this inclusion was formed. Look below to see the entire meteorite. Image via Origins Lab, University of Chicago. A pink meteorite inclusion nicknamed Curious Marie shows that a highly unstable element, curium, was present in the early solar system. Researchers have found evidence that curium – a rare unstable heavy element – was present during the early formation of our solar system. Even though curium has long-since decayed into a form of uranium, signs of its presence remain in a pinkish ceramic inclusion nicknamed Curious Marie, a tribute to Marie Curie for whom the element curium was named. This discovery will help scientists refine their models of how elements are forged ...
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