COFFINITE NATURAL URANIUM ROCK Radiation level: 42,000 CPM; Found at Uravan Colorado uranium field June 2021 Weight 5.9 oz. $35.00 + $12.80 shipping COFFINITE is a fairly common uranium mineral. Typically, it has scattered colors of yellow and black on its rock surface. Jurassic Canyon NM is the USA's richest location for URANIUM rocks to be found, on or near the ground surface. Radiation levels above 40,000. CPM are considered high levels, with regard to comparison with other natural radioactive rocks. This rock, with 42,000. CPM response, is high level. (NOTE that applications in industrial, medical, or military uses have far higher radiation levels than those found in natural uranium rocks.) ALL SALES must be to USA addresses. The Nuclear Regulatory Commission, and also USPS regulations, forbid the export of natural uranium rocks to to any address at any foreign country. ALPHA RADIATION is the radiation type that is most easily blocked by barriers, even by clothing, paper, or the skin. Alpha radiation is the radiation type that is most commonly emitted by natural uranium. ( By contrast, Gamma ray radiation, is the "Macho" type of radiation. Gamma rays penetrate all barriers, even metals such as lead. Gamma rays make space travel difficult, because cosmic rays in outer space are mainly gamma radiation. Cosmic radiation at the ISS space station is 240 times more intense than natural surface radiation on Earth; At the surface of red planet Mars, the radiation is 730 times more intense than Earth's surface radiation. The Gamma Ray Burst of October 2022, a tightly focused narrow beam, traveled 2.4 billion light years to Earth; it was the most intense energy event since the early "Big Bang." That GRB interrupted low-frequency AM- radio on Earth for four days.) The GRB of October 2022 was labeled by astronomers as the BOAT-GRB: "Brightest of All Time." Learn more about Gamma Ray Bursts at YouTube! There are now about 80 teaching videos on GRBs at YouTube; this is one of the most amazing topics in all of astronomy. My P3 geiger probe has a large 3" pancake sensor made at Ukraine in the late 1980s for the USSR Soviet military; it is tuned to respond mainly to gamma rays; if aimed upward at the sky, it could detect distant GRB signals from other galaxies, such as the one that hit Earth in October 2022. SHIPPING is only allowed to USA postal addresses, according to regulations of the Federal Nuclear Regulatory Agency. $35.00 + $12.80 shipping Stephen Buggie, Ph.D. Professor Emeritus of Psychology Univ. of New Mexico, Gallup Gallup NM 87301-6979