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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 |
 Mild - Very low level of Radioactivity, no special precautions needed. |
Rasvumite | 4,793 /kg | 1.3E-10 /g | 219.9 | 0.000 /g |
 Very Radioactive, limit exposure, handling and use secure storage. |
Rauvite | 46,665,300 /kg | 1.26E-6 /g | 2,068,510.6 | 0.680 /g |
 Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Rectorite | 148 /kg | 4.0E-12 /g | 7.1 | 0.000 /g |
 Weak - Low level of Radioactivity, may show on average radiation equipment.*Missing Thorium content - estimated from Rare Earth Element concentration. |
Remondite-(Ce) | 818,944 /kg | 2.21E-8 /g | 36,233.0 | 0.012 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Remondite-(La) | 739,648 /kg | 2.0E-8 /g | 32,842.4 | 0.011 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Renardite | 101,958,400 /kg | 2.76E-6 /g | 4,146,567.8 | 1.363 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Rengeite | 15,062 /kg | 4.07E-10 /g | 671.1 | 0.000 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Retzian-(Ce) | 686,784 /kg | 1.86E-8 /g | 29,910.4 | 0.010 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Retzian-(La) | 709,184 /kg | 1.92E-8 /g | 30,917.7 | 0.010 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Retzian-(Nd) | 694,624 /kg | 1.88E-8 /g | 30,250.1 | 0.010 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Reyerite | 470 /kg | 1.27E-11 /g | 22.5 | 0.000 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Rhabdophane-(Ce) | 1,238,496 /kg | 3.35E-8 /g | 53,520.1 | 0.018 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Rhabdophane-(La) | 1,236,032 /kg | 3.34E-8 /g | 53,307.6 | 0.018 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Rhabdophane-(Nd) | 1,248,128 /kg | 3.37E-8 /g | 53,959.4 | 0.018 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. |
Rheniite | 758,676 /kg | 2.05E-8 /g | 30,879.7 | 0.010 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. |
Rhenium | 1,020,000 /kg | 2.76E-8 /g | 39,127.0 | 0.013 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Rhodesite | 970 /kg | 2.62E-11 /g | 46.7 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Rhodizite | 1,139 /kg | 3.08E-11 /g | 52.5 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Rhonite | 145 /kg | 3.92E-12 /g | 6.8 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Richetite | 118,390,600 /kg | 3.2E-6 /g | 4,652,124.3 | 1.529 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Rinkite | 382,368 /kg | 1.03E-8 /g | 17,449.6 | 0.006 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Rinneite | 8,690 /kg | 2.35E-10 /g | 396.6 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Roedderite | 573 /kg | 1.55E-11 /g | 27.0 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Romanite | 70,006,900 /kg | 1.89E-6 /g | 2,880,457.5 | 0.947 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Ronneburgite | 4,312 /kg | 1.17E-10 /g | 194.9 | 0.000 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Rontgenite-(Ce) | 1,096,704 /kg | 2.96E-8 /g | 47,572.5 | 0.016 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Roscoelite | 2,882 /kg | 7.79E-11 /g | 135.5 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Roubaultite | 106,934,600 /kg | 2.89E-6 /g | 4,395,426.5 | 1.445 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Rubicline | 183,333 /kg | 4.95E-9 /g | 8,445.7 | 0.003 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Rutherfordine | 129,094,800 /kg | 3.49E-6 /g | 5,139,660.7 | 1.690 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Sabugalite | 95,944,000 /kg | 2.59E-6 /g | 4,083,626.0 | 1.343 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Sacrofanite | 1,418 /kg | 3.83E-11 /g | 66.8 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Sadanagaite | 951 /kg | 2.57E-11 /g | 44.6 | 0.000 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Sahamalite-(Ce) | 1,136,128 /kg | 3.07E-8 /g | 49,242.6 | 0.016 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Saleeite | 91,182,600 /kg | 2.46E-6 /g | 3,920,165.5 | 1.289 /g |
| Very Radioactive, limit exposure, handling and use secure storage. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Samarskite-(Y) | 28,731,018 /kg | 7.77E-7 /g | 1,201,227.3 | 0.395 /g |
 Strong - Noticeable Radioactivity, limit exposure and handling. |
Samarskite-(Yb) | 21,342,354 /kg | 5.77E-7 /g | 879,530.8 | 0.289 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Sampleite | 403 /kg | 1.09E-11 /g | 18.7 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Sanidine | 3,239 /kg | 8.75E-11 /g | 152.9 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Santite | 4,039 /kg | 1.09E-10 /g | 194.1 | 0.000 /g |
| Strong - Noticeable Radioactivity, limit exposure and handling. |
Saryarkite-(Y) | 3,369,460 /kg | 9.11E-8 /g | 157,296.6 | 0.052 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Satimolite | 1,412 /kg | 3.82E-11 /g | 68.0 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Sayrite | 108,312,900 /kg | 2.93E-6 /g | 4,247,661.8 | 1.396 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Sazhinite-(Ce) | 482,944 /kg | 1.31E-8 /g | 22,291.5 | 0.007 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. |
Sazhinite-(La) | 2,073,553 /kg | 5.6E-8 /g | 94,832.9 | 0.031 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Schmitterite | 95,603,900 /kg | 2.58E-6 /g | 3,759,155.4 | 1.236 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Schoepite | 130,455,200 /kg | 3.53E-6 /g | 5,267,693.0 | 1.732 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Schorl-(F) | 9 /kg | 2.43E-13 /g | 0.4 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Schrockingerite | 47,954,100 /kg | 1.3E-6 /g | 2,188,412.8 | 0.719 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Schuilingite-(Nd) | 392,770 /kg | 1.06E-8 /g | 17,046.1 | 0.006 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Sedovite | 76,361,400 /kg | 2.06E-6 /g | 3,128,190.8 | 1.028 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Seelite-1 | 68,628,600 /kg | 1.85E-6 /g | 2,983,992.7 | 0.981 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Seelite-2 | 77,721,800 /kg | 2.1E-6 /g | 3,366,944.3 | 1.107 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Seidite-(Ce) | 428,960 /kg | 1.16E-8 /g | 19,716.8 | 0.006 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Selwynite | 1,757 /kg | 4.75E-11 /g | 80.5 | 0.000 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Semenovite | 332,039 /kg | 8.97E-9 /g | 15,173.9 | 0.005 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Senekevichite | 1,448 /kg | 3.91E-11 /g | 66.6 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Sengierite | 84,774,400 /kg | 2.29E-6 /g | 3,565,626.3 | 1.172 /g |
| Very Radioactive, limit exposure, handling and use secure storage. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Shabaite-(Nd) | 44,526,235 /kg | 1.2E-6 /g | 1,930,609.5 | 0.635 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Shafranovskite | 2,003 /kg | 5.41E-11 /g | 94.6 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Sharpite | 119,643,600 /kg | 3.23E-6 /g | 4,872,990.3 | 1.602 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Shcherbakovite | 3,460 /kg | 9.35E-11 /g | 159.1 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Shibkovite | 2,206 /kg | 5.96E-11 /g | 103.1 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Shirokshinite | 2,812 /kg | 7.6E-11 /g | 132.3 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Shirozulite | 2,218 /kg | 5.99E-11 /g | 102.9 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Shlykovite | 1,591 /kg | 4.3E-11 /g | 76.2 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Siderophyllite | 2,442 /kg | 6.6E-11 /g | 113.2 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Sitinakite | 1,800 /kg | 4.86E-11 /g | 83.4 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Sklodowskite | 99,237,600 /kg | 2.68E-6 /g | 4,204,175.9 | 1.382 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Sobotkite | 267 /kg | 7.22E-12 /g | 12.8 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Soddyite | 127,519,600 /kg | 3.45E-6 /g | 5,124,361.4 | 1.685 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Sodic-ferripedrizite | 42 /kg | 1.14E-12 /g | 2.0 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Sodium-autunite | 92,596,700 /kg | 2.5E-6 /g | 3,947,503.5 | 1.298 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Sodium meta-autunite | 94,458,300 /kg | 2.55E-6 /g | 4,007,456.6 | 1.318 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Sogdianite | 1,691 /kg | 4.57E-11 /g | 79.0 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Sosedkoite | 727 /kg | 1.96E-11 /g | 29.5 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Spheniscidite | 1,145 /kg | 3.09E-11 /g | 54.4 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Spodiophyllite | 1,300 /kg | 3.51E-11 /g | 60.9 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Spriggite | 105,771,100 /kg | 2.86E-6 /g | 4,124,086.2 | 1.356 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Sreinite | 76,934,200 /kg | 2.08E-6 /g | 3,061,826.7 | 1.007 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Stavelotite-(La) | 240,800 /kg | 6.51E-9 /g | 10,809.5 | 0.004 /g |
| Strong - Noticeable Radioactivity, limit exposure and handling. |
Steacyite | 11,330,781 /kg | 3.06E-7 /g | 506,796.0 | 0.167 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. |
Steenstrupine-(Ce) | 824,320 /kg | 2.23E-8 /g | 36,743.6 | 0.012 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Stillwellite-(Ce) | 1,149,120 /kg | 3.11E-8 /g | 49,614.4 | 0.016 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Stilpnomelane | 948 /kg | 2.56E-11 /g | 44.3 | 0.000 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Stornesite-(Y) | 22,156 /kg | 5.99E-10 /g | 1,032.8 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Straczekite | 427 /kg | 1.15E-11 /g | 19.4 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Strelkinite | 92,220,800 /kg | 2.49E-6 /g | 3,876,501.0 | 1.274 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Strontiochevkinite | 283,703 /kg | 7.67E-9 /g | 12,554.1 | 0.004 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Struvite-(K) | 4,445 /kg | 1.2E-10 /g | 219.2 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Studtite | 113,879,800 /kg | 3.08E-6 /g | 4,753,486.5 | 1.563 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Sugilite | 921 /kg | 2.49E-11 /g | 43.3 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Suhailite | 930 /kg | 2.51E-11 /g | 43.8 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Surkhobite | 473 /kg | 1.28E-11 /g | 21.4 | 0.000 /g |
| Barely Detectable - Radioactivity detected only by very sensitive instruments. |
Sveite | 1,227 /kg | 3.32E-11 /g | 59.7 | 0.000 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Swamboite | 100,848,600 /kg | 2.73E-6 /g | 4,291,848.1 | 1.411 /g |
| Very Radioactive, limit exposure, handling and use secure storage. |
Swartzite | 58,300,300 /kg | 1.58E-6 /g | 2,659,049.1 | 0.874 /g |
| Mild - Very low level of Radioactivity, no special precautions needed. |
Sylvite | 15,889 /kg | 4.29E-10 /g | 730.7 | 0.000 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Synchysite-(Ce) | 983,136 /kg | 2.66E-8 /g | 43,109.7 | 0.014 /g |
| Weak - Low level of Radioactivity, may show on average radiation equipment. *Missing Thorium content - estimated from Rare Earth Element concentration. |
Synchysite-(Nd) | 999,264 /kg | 2.7E-8 /g | 43,841.5 | 0.014 /g |
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