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Published radiometric dating on this llanite indicates that it is 1.106 billion years old (late Mesoproterozoic). The quartz crystals found in llanite are blue hexagonal bipyramids. The unusual blue coloration of the quartz is thought to be due to ilmenite inclusions. It is named after Llano County, Texas, the only place where it is found. [1]
In 1986, California named benitoite as its state gemstone, a form of the mineral barium titanium silicate that is unique to the Golden State and only found in gem quality in San Benito County. [ 80 ] ^ Colorado is the only state whose geological symbols reflect the national flag's colors: red (rhodochrosite), white (yule marble), and blue ...
Researchers at McGill University found a rock with a very old model age for extraction from the mantle (3.8 to 4.28 billion years ago) in the Nuvvuagittuq greenstone belt on the coast of Hudson Bay, in northern Quebec; [2] the true age of these samples is still under debate, and they may actually be closer to 3.8 billion years old. [3]
→ Emerald green artifact 'ignored' for 80 years was 'rare' 500-year-old find. → 2,400-year-old underground discovery stumped ... The second cylindrical vessel was found near a different ...
Henry Gault, from whom the site takes its name, put together a 250-acre farm in the Buttermilk Creek Valley, starting in 1904. At some point in the early 20th century he found extra income as an informant for early archaeological explorations in Central Texas working with the first professional archaeologist in Texas, J.E. Pearce, as well as avocational archaeologists (Alex Dienst, Kenneth ...
A shipwreck dating back to the 5th and 6th centuries B.C. was discovered near Sicily along with ancient anchors made from stone and iron, Italian officials said. The 2,500-year-old wreck was found ...
→ Mysterious ruins found hidden in courtyard of 500-year-old castle in Norway. See them ... making it at least 4,000 years old. ... No. 3 Texas and No. 20 Texas renew storied rivalry with high ...
Acrocanthosaurus.. Archaeologist Jack. T. Hughes has found evidence that the paleo-Indians of Texas collected fossils. [20] After the establishment of paleontology as a formal science, in 1878, professor Jacob Boll made the first scientifically documented Texan fossil finds in Archer and Wichita counties while collecting fossils on behalf of Edward Drinker Cope.