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Calculated Radioactivity
See Help on Radioactivity for background on the calculation. Legend
Click Here For Mineral species sorted by Radioactive Strength.
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| Relative Activity |
Mineral Name | Calculated Activity Becquerel/kilogram |
Calculated Activity Curie/gram |
Estimate Activity GR(api) |
Estimate Activity mRem/hr per gram |
 Very Radioactive, limit exposure, handling and use secure storage. |
Metauranopilite | 129,345,400 /kg | 3.5E-6 /g | 5,208,910.8 | 1.713 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Metauranospinite | 85,025,000 /kg | 2.3E-6 /g | 3,602,477.7 | 1.184 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Metavandendriesscheite | 123,975,400 /kg | 3.35E-6 /g | 4,916,606.5 | 1.616 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Metavanmeersscheite | 123,832,200 /kg | 3.35E-6 /g | 5,003,716.6 | 1.645 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Metavanuralite | 88,945,100 /kg | 2.4E-6 /g | 3,783,175.5 | 1.244 /g |
 Mild - Very low level of Radioactivity, no special precautions needed. |
Metavoltine | 2,163 /kg | 5.85E-11 /g | 103.1 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Metazellerite | 87,996,400 /kg | 2.38E-6 /g | 3,771,803.3 | 1.240 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Metazeunerite | 83,073,900 /kg | 2.25E-6 /g | 3,509,361.9 | 1.154 /g |
 Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Meurigite-K | 854 /kg | 2.31E-11 /g | 40.2 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Meurigite-Na | 85 /kg | 2.3E-12 /g | 4.0 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Micheelsenite | 54,432 /kg | 1.47E-9 /g | 2,648.2 | 0.001 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Microcline | 4,254 /kg | 1.15E-10 /g | 200.8 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Microsommite | 979 /kg | 2.65E-11 /g | 45.9 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Middendorfite | 2,557 /kg | 6.91E-11 /g | 120.0 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Milarite | 1,194 /kg | 3.23E-11 /g | 56.6 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Millisite | 361 /kg | 9.76E-12 /g | 17.3 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Minamiite | 291 /kg | 7.86E-12 /g | 13.9 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Mineevite-(Y) | 134,176 /kg | 3.63E-9 /g | 6,125.5 | 0.002 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Minehillite | 470 /kg | 1.27E-11 /g | 22.3 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Minguzzite | 7,233 /kg | 1.95E-10 /g | 343.5 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Minyulite | 3,178 /kg | 8.59E-11 /g | 152.7 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Misenite | 9,560 /kg | 2.58E-10 /g | 453.7 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Miserite | 63,958 /kg | 1.73E-9 /g | 3,020.4 | 0.001 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Mitscherlichite | 7,411 /kg | 2.0E-10 /g | 342.2 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Moctezumite | 51,426,700 /kg | 1.39E-6 /g | 2,021,762.8 | 0.665 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Mogovidite | 9,051 /kg | 2.45E-10 /g | 422.4 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Moluranite | 68,270,600 /kg | 1.85E-6 /g | 2,911,608.2 | 0.957 /g |
 Weak - Low level of Radioactivity, may show on average radiation equipment. |
Monazite-(Ce) | 2,159,360 /kg | 5.84E-8 /g | 91,360.1 | 0.030 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. |
Monazite-(La) | 2,163,840 /kg | 5.85E-8 /g | 91,467.0 | 0.030 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. |
Monazite-(Nd) | 2,154,880 /kg | 5.82E-8 /g | 91,281.1 | 0.030 /g |
 Strong - Noticeable Radioactivity, limit exposure and handling. |
Monazite-(Sm) | 7,064,299 /kg | 1.91E-7 /g | 296,972.8 | 0.098 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Monsmedite | 1,618 /kg | 4.37E-11 /g | 74.0 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Montdorite | 1,900 /kg | 5.14E-11 /g | 88.3 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Monteregianite-(Y) | 1,351 /kg | 3.65E-11 /g | 64.0 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Montesommaite | 4,184 /kg | 1.13E-10 /g | 199.1 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Mordenite | 133 /kg | 3.59E-12 /g | 6.4 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Moreauite | 47,112,800 /kg | 1.27E-6 /g | 2,163,152.3 | 0.711 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Mosandrite | 515,424 /kg | 1.39E-8 /g | 23,071.0 | 0.008 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Moskvinite-(Y) | 140,274 /kg | 3.79E-9 /g | 6,466.6 | 0.002 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. |
Mottanaite-(Ce) | 1,030,400 /kg | 2.78E-8 /g | 46,675.0 | 0.015 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Mountainite | 1,445 /kg | 3.91E-11 /g | 69.4 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Mourite | 39,451,600 /kg | 1.07E-6 /g | 1,697,651.9 | 0.558 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Mundite | 109,422,700 /kg | 2.96E-6 /g | 4,531,018.0 | 1.490 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Murataite | 194,006 /kg | 5.24E-9 /g | 8,614.5 | 0.003 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Murunskite | 5,230 /kg | 1.41E-10 /g | 236.4 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Muscovite | 2,969 /kg | 8.02E-11 /g | 140.4 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Nabalamprophyllite | 233 /kg | 6.3E-12 /g | 10.4 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Nabokoite | 994 /kg | 2.69E-11 /g | 44.7 | 0.000 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Nacareniobsite-(Ce) | 413,952 /kg | 1.12E-8 /g | 18,688.7 | 0.006 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Nalivkinite | 676 /kg | 1.83E-11 /g | 31.1 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Natroboltwoodite | 122,400,624 /kg | 3.31E-6 /g | 4,954,915.7 | 1.629 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Natrokomarovite | 23,072 /kg | 6.24E-10 /g | 1,045.1 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Natrolemoynite | 312 /kg | 8.43E-12 /g | 14.7 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Natropharmacosiderite | 654 /kg | 1.77E-11 /g | 30.3 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Natrouranospinite | 89,464,200 /kg | 2.42E-6 /g | 3,733,589.4 | 1.227 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Natrozippeite | 103,963,200 /kg | 2.81E-6 /g | 4,372,483.8 | 1.438 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Nechelyustovite | 7,171 /kg | 1.94E-10 /g | 327.9 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Nenadkevichite | 230 /kg | 6.22E-12 /g | 10.7 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Nepheline | 2,027 /kg | 5.48E-11 /g | 95.1 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Neptunite | 1,303 /kg | 3.52E-11 /g | 60.6 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Neskevaaraite-Fe | 2,215 /kg | 5.99E-11 /g | 103.1 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Nickelzippeite | 102,907,100 /kg | 2.78E-6 /g | 4,330,956.8 | 1.424 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Nielsbohrite | 123,152,464 /kg | 3.33E-6 /g | 4,929,481.0 | 1.621 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Niksergievite | 30 /kg | 8.11E-13 /g | 1.4 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Ningyoite | 92,280,220 /kg | 2.49E-6 /g | 3,848,817.1 | 1.265 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Nioboaeschynite-(Ce) | 512,064 /kg | 1.38E-8 /g | 22,153.2 | 0.007 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Nioboaeschynite-(Nd) | 771,008 /kg | 2.08E-8 /g | 32,869.2 | 0.011 /g |
| Strong - Noticeable Radioactivity, limit exposure and handling. |
Nioboaeschynite-(Y) | 6,110,627 /kg | 1.65E-7 /g | 262,272.6 | 0.086 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Niobokupletskite | 1,718 /kg | 4.64E-11 /g | 78.6 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Niobophyllite | 1,697 /kg | 4.59E-11 /g | 77.9 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Niter | 11,717 /kg | 3.17E-10 /g | 551.8 | 0.000 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Nordite-(Ce) | 368,480 /kg | 9.96E-9 /g | 16,700.0 | 0.005 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Nordite-(La) | 367,808 /kg | 9.94E-9 /g | 16,665.8 | 0.005 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Norrishite | 2,572 /kg | 6.95E-11 /g | 119.2 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Novacekite | 80,496,300 /kg | 2.18E-6 /g | 3,461,119.9 | 1.138 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Nyboite | 42 /kg | 1.14E-12 /g | 2.0 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Obradovicite | 658 /kg | 1.78E-11 /g | 30.1 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Odintsovite | 1,730 /kg | 4.68E-11 /g | 81.2 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Offretite | 894 /kg | 2.42E-11 /g | 43.2 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Oftedalite | 1,191 /kg | 3.22E-11 /g | 56.1 | 0.000 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. |
Okanoganite-(Y) | 885,367 /kg | 2.39E-8 /g | 38,565.7 | 0.013 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Olmsteadite | 2,260 /kg | 6.11E-11 /g | 102.7 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Omongwaite | 794 /kg | 2.15E-11 /g | 37.9 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Organovaite-Mn | 1,148 /kg | 3.1E-11 /g | 52.9 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Organovaite-Zn | 921 /kg | 2.49E-11 /g | 42.7 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Orlovite | 2,951 /kg | 7.98E-11 /g | 137.9 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Orthobrannerite | 95,353,300 /kg | 2.58E-6 /g | 3,921,717.9 | 1.289 /g |
| Strong - Noticeable Radioactivity, limit exposure and handling. |
Orthochevkinite | 3,548,160 /kg | 9.59E-8 /g | 154,746.6 | 0.051 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Orthoclase | 4,254 /kg | 1.15E-10 /g | 200.8 | 0.000 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Orthojoaquinite-(Ce) | 452,032 /kg | 1.22E-8 /g | 19,805.9 | 0.007 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Orthojoaquinite-(La) | 438,450 /kg | 1.19E-8 /g | 19,201.3 | 0.006 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Orthowalpurgite | 28,711,600 /kg | 7.76E-7 /g | 1,145,986.9 | 0.377 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Osumilite-(Fe) | 845 /kg | 2.28E-11 /g | 39.6 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Osumilite-(Mg) | 873 /kg | 2.36E-11 /g | 41.1 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Oswaldpeetersite | 120,663,900 /kg | 3.26E-6 /g | 4,945,849.1 | 1.626 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Ottensite | 27 /kg | 7.3E-13 /g | 1.1 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Oursinite | 97,734,000 /kg | 2.64E-6 /g | 4,113,862.7 | 1.353 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Oxykinoshitalite | 1,000 /kg | 2.7E-11 /g | 45.6 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Pahasapaite | 400 /kg | 1.08E-11 /g | 19.1 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Palmierite | 3,784 /kg | 1.02E-10 /g | 162.7 | 0.000 /g |
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