Uranium Metal Info
Our Uranium Metal is primarily isotope U238 (actually 99.7% U238, 0.3% U235). Uranium metal is over 68% denser than Lead, it is mildly radioactive and like most heavy metals, can be toxic if ingested. It is legal to own up to 1 Kg of Uranium metal in the USA without a license. It is pyrophoric, that is, it can ignite on contact with air if it is in very fine chips or a powdered state. For this reason, you should not cut it as the filings/chips may ignite and produce dangerous & toxic radioactive smoke.
General Uranium Ore Info
Our Uranium ore is from a variety of sites throughout the world. Most of the domestic samples are mined by our own prospectors. All ore samples are of typical 'useful size' which is generally 1.5 to 3.5", with most samples being about 2.5" across. If a sample is unusually large or unusually small, it is clearly noted in the text for that sample. An exception to this is our Cloud Chamber Sources which are intentionally small and higher in radiation intensity as they are intended to operate in the limited space of a Cloud Chamber device. Uranium Ore samples may contain primary and secondary Uranium ores including: Carnotite (bright yellow), Uraninite (black crystal), Pitchblende (jet black), Uranophane (canary yellow), Gummite (rust brown), Tyuyamunite (pale green), Schroeckingerite (greenish-yellow), and other minor ores.
How Ore is Measured
The radiation measurements stated on all of our radioactive items is guaranteed to be accurate. It is measured with a calibrated, Stabilized Assay Meter, not just a simple Geiger Counter. We measure the total Beta and Gamma radiation emissions from each sample in CPM (Counts Per Minute) using a standard 'Hot Dog' probe (such as a Ludlum 44-6). Measurements taken with Pancake or End Window probes will produce falsely high readings and are deceptive to the customer. The radiation emission number stated with each sample is the combined Beta and Gamma emissions, taken from the area on the sample that produces the highest reading. We do not measure the Alpha radiation emissions as that too produces falsely high readings.
Ore Uses & Applications
Uranium ores have a variety of uses. Lower radiation level ores are ideal for testing Geiger Counters and similar types of radiation detection equipment. Higher level ores are intended for laboratory experimentation or for radiological training purposes. For example, ore samples are hidden in a large area - then the samples have to be located as quickly as possible with radiation detection equipment. For just this purpose, we supply Radioactive ore to Police, Fire, and Homeland Security departments. Another use is for Cloud Chambers. Cloud Chambers are devices that make the radiation produced by radioactive materials visible to the eye, as small streaks of cloud-like vapor. They require higher radiation level samples, but need to be physically small to fit in the limited area available in a Cloud Chamber. Mineral collectors find all Uranium ore varieties and radiation levels useful for their collections.