CPM: 1000 (Alpha, Beta, Gamma) Gross Counts (Detector Radeye B20)
Dose Rate 0.5 uSv/hr Gamma (Detector Radiacode 103)
 
This Thorium ore was found at an abandoned mining site in Southern California, near Joshua Tree National Park. A Gamma Spectrum was collected on this ore to confirm it was Thorium. Natural Thorium 232 will have unique peaks associated with it that differ from Uranium Ore. 
 
Most of the radiation can be blocked with either glass or plastic. The radiation is the most intense right at the surface of the ore sample. Care should be taken while handling the ore sample. Gloves are recommended for handling the ore sample and having some kind of Geiger counter on hand is highly recommended as well. Handling of the ore sample should be done in an area that can be cleaned easily or outside. 
 
Thorium ore is really only a hazard if its ingested or inhaled. Keeping it in a display case should pose no problems. The ore will produce a small amount of radon gas over time from natural radioactive decay.
 
The activity of the sample was measured at 1000 CPM (counts per minute) using a Radeye B20 meter. This reading is a combination of alpha, beta and gamma radiation coming from the sample at the surface. This reading can only be recreated using a meter that has a pancake probe and can detect alpha, beta and gamma radiation.
 
Dose Rate was calculated using a Radiacode 103 on contact with the most active area.
 
The sample will be properly labeled
and will be wrapped to comply fully
with USPS post office regulations. The
rocks can be shipped only within the
USA: foreign shipments are NOT
allowed, due to regulations of the
USPS and the federal Nuclear
Regulatory Commission.

 
NATURAL UNPROCESSED ORE
This package is wrapped to conform to the
requirements of USPS Packaging Instruction 7A
and USPS Publication 52, Section 347.22