Radium in dry stream sediments
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Radium can be determined in sediments in dry stream beds, and anomalous values point
to uranium exploration targets upstream.
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- Place about 40 grams of sediment in an 8-ounce jar.
- Fill the jar with radon-free water.
- Let it sit a week or two for the radon to grow in.
- Stir it up, decant the water into the degassing system and count the radon in the normal way.
- Grain size of the sediment is not too important. You can use much coarser than 80 mesh. You
don't need to grind the sediment, or use any chemical attack.
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You can set up the radon/radium lab in the field. It is battery operated.
But you have to wait for the radon to grow in.
See the growth curve.
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Radium is less soluble than uranium, and it would not be surprising to find that these dry
sediments have been leached of much of their uranium, leaving behind a detectable radium
anomaly.
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Most of the gamma radiation used in uranium exploration comes from radium daughters,
particularly bismuth-214. However, the radium anomalies we found can only be found with our
geochemical technique: the gamma radiation is not sufficient to be detected by gamma-ray
scintillometer or spectrometer.
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We found radium anomalies in dry sediments downstrem from uranium deposits at Mount
Painter, Radium Hill, and Mary Kathleen.
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INSTRUMENTS
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We measure: radon - radium - thoron - radon daughters - alpha radiation.
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The
Lucas cell
is recognized as the most sensitive and reliable method for these elements.
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Our instruments are used around the world in exploration for uranium, oil & gas, groundwater and hydrothermal,
and in environmental protection, health physics, earthquake prediction, and evaluation of hydrocarbon and NAPL contamination.
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In the radon business since 1968, our latest major instrument update was 2015.
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Modern, low-power, field-rugged electronics. Some earlier versions still working after 35 years.
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Continuous real-time monitoring and data recording.
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Winter and summer, from the Sahara Desert to the Canadian Shield, our instruments have faced up to severe field conditions.
- Intrinsically safe functions.
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Sensitive to geochemical trace levels necessary for radon in lake water and for radon-thoron isotope ratios.
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Can work in a tent without electricity or be carried from point to point in the field.
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50 readings per day. Results available immediately.
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Rechargeable battery pack good for a long day in the field and recharges in a few hours.
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Can be operated by junior personnel if carefully supervised.
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Same instruments used for radon and radium in soil, sediment,
plant parts, rocks, water, soil gas, air, and snow, and for radon daughters in air.
- EPA compliant.
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Click here for more details of instruments.
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Click here for or other instruments, components and
accessories we provide
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Technical specification sheets and pictures of our instruments provided on request.
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Multilingual consulting and training (if required).
For instruments contact
R.H. Morse & Associates Ltd.
1-416-269-9979
morse@finderschoice.com
skype: robert.morse.toronto |
Robert H. Morse, Ph.D., P.Eng.
October 15, 2008
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