 |
VOOZH | about |
|
VOOZH | about |
| Cerite | ||
| Cerite-(CeCa) | A valid IMA mineral species - grandfathered | (Ce7Ca2)◻Mg(SiO4)3(SiO3OH)4(OH)3 |
| Cerite-(La) | A synonym of Ferricerite-(LaCa) | (La6Ca3)◻Fe3+(SiO4)3(SiO3OH)4(OH)3 |
| Surite | A valid IMA mineral species | (Pb,Ca)3(Al,Fe2+,Mg)2((Si,Al)4O10)(CO3)2(OH)2 |
| Zaïrite | A valid IMA mineral species | BiFe33+(PO4)2(OH)6 |
| Zorite | A valid IMA mineral species | Na8(Ti,Nb)5(Si6O17)2(OH,O)5 · 14H2O |
| Symbol | Source | Reference for Standard |
|---|---|---|
| Syr | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| Play | Recorded by | Country |
|---|---|---|
| Jolyon Ralph | United Kingdom |
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0012080 | Sayrite | Piret P, Deliens M, Piret-Meunier J, Germain G (1983) La sayrite, Pb2[(UO2)5O6(OH)2]*4H2O, nouveau mineral; proprietes et structure cristalline Bulletin de Mineralogie 106 299-304 | 1983 | Shinkolobwe, Shaba, Zaire | 0 | 293 |
| d-spacing | Intensity |
|---|---|
| 7.01 Å | (80) |
| 5.67 Å | (50) |
| 3.512 Å | (90) |
| 3.426 Å | (40) |
| 3.113 Å | (100) |
| 3.052 Å | (70) |
| 1.955 Å | (50) |
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47f : [Uranyl (U⁶⁺) minerals] |
| 5 photos of Sayrite associated with Uraninite | UO2 |
| 4 photos of Sayrite associated with Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| 3 photos of Sayrite associated with Rutherfordine | (UO2)CO3 |
| 2 photos of Sayrite associated with Becquerelite | Ca(UO2)6O4(OH)6 · 8H2O |
| 2 photos of Sayrite associated with Masuyite | Pb(UO2)3O3(OH)2 · 3H2O |
| 4.GB.05 | Rameauite | K2Ca(UO2)6O6(OH)4 · 6H2O | Mon. m : Bb |
| 4.GB.05 | Agrinierite | K2(Ca,Sr)[(UO2)3O3(OH)2]2 · 5H2O | Mon. m : Bm |
| 4.GB.05 | Compreignacite | K2(UO2)6O4(OH)6 · 7H2O | Orth. mmm(2/m2/m2/m) : Pnnm |
| 4.GB.10 | Becquerelite | Ca(UO2)6O4(OH)6 · 8H2O | Orth. mm2 : Pna21 |
| 4.GB.10 | Billietite | Ba(UO2)6O4(OH)6 · 4-8H2O | Orth. mm2 |
| 4.GB.10 | Protasite | Ba(UO2)3O3(OH)2 · 3H2O | Mon. m |
| 4.GB.15 | Richetite | (Fe3+,Mg)Pb 8.6(UO2)36O36(OH)24 · 41H2O | Tric. 1 : P1 |
| 4.GB.20 | Calciouranoite | (Ca,Ba,Pb)U2O7 · 5H2O | |
| 4.GB.20 | Bauranoite | Ba(UO2)2(OH)6 · 1-2H2O | |
| 4.GB.20 | Metacalciouranoite | (Ca,Ba,Pb,K2)U2O7 · 2H2O | |
| 4.GB.25 | Fourmarierite | Pb(UO2)4O3(OH)4 · 4H2O | Orth. mm2 |
| 4.GB.30 | Wölsendorfite | Pb7(UO2)14O19(OH)4 · 12H2O | Orth. mmm(2/m2/m2/m) : Cmcm |
| 4.GB.35 | Masuyite | Pb(UO2)3O3(OH)2 · 3H2O | Orth. mmm(2/m2/m2/m) |
| 4.GB.40 | Vandendriesscheite | PbU7O22 · 12H2O | Orth. mmm(2/m2/m2/m) : Pbca |
| 4.GB.40 | Metavandendriesscheite | PbU7O22 · nH2O n < 12 | Orth. |
| 4.GB.45 | Vandenbrandeite | Cu(UO2)(OH)4 | Tric. 1 : P1 |
| 4.GB.55 | Curite | Pb3(H2O)2[(UO2)4O4(OH)3]2 | Orth. mmm(2/m2/m2/m) : Pnma |
| 4.GB.60 | Iriginite | (UO2)Mo2O7 · 3H2O | Orth. mmm(2/m2/m2/m) : Pbcm |
| 4.GB.65 | Uranosphaerite | Bi(UO2)O2(OH) | Mon. 2/m |
| 4.GB.70 | Holfertite | CaxU6+2-xTi(O8-xOH4x) · 3H2O | Trig. 3 : P3 |
| 4.GB.75 | Carlosbarbosaite | (UO2)2Nb2O6(OH)2 · 2H2O | Orth. mmm(2/m2/m2/m) : Cmcm |
| 4.GB.80 | Gauthierite | KPb[(UO2)7O5(OH)7] · 8H2O | Mon. 2/m : P21/b |
| 4.GB.85 | Kroupaite | KPb0.5[(UO2)8O4(OH)10] · 10H2O | Orth. mmm(2/m2/m2/m) : Pbca |
| 4.GB.90 | Leesite | K(H2O)2[(UO2)4O2(OH)5] · 3H2O | Orth. mmm(2/m2/m2/m) : Pbca |
| 4.GB.95 | Shinkolobweite | Pb1.333[U5+O(OH)(UO2)5O4.67(OH)5.33](H2O)5 | Orth. mmm(2/m2/m2/m) : Pnnm |
| 4.GB.95 | Nollmotzite | Mg[U5+(U6+O2)2O4F3] · 4H2O | Mon. m : Bm |
| Element | % Content | Activity (Bq/kg) | Radiation Type |
|---|---|---|---|
| Uranium (U) | 60.5175% | 15,129,375 | α, β, γ |
| Thorium (Th) | 0.0000% | 0 | α, β, γ |
| Potassium (K) | 0.0000% | 0 | β, γ |
For comparison:
Note: Risk is shown relative to daily recommended maximum exposure to non-background radiation of 1000 µSv/year. Note that natural background radiation averages around 2400 µSv/year so in reality these risks are probably extremely overstated! With infrequent handling and safe storage natural radioactive minerals do not usually pose much risk.
Note: The mass selector refers to the mass of radioactive mineral present, not the full specimen, also be aware that the matrix may also be radioactive, possibly more radioactive than this mineral!
Activity: –
| Distance | Dose rate | Risk |
|---|---|---|
| 1 cm | ||
| 10 cm | ||
| 1 m |
The external dose rate (D) from a radioactive mineral is estimated by summing the gamma radiation contributions from its Uranium, Thorium, and Potassium content, disregarding daughter-product which may have a significant effect in some cases (eg 'pitchblende'). This involves multiplying the activity (A, in Bq) of each element by its specific gamma ray constant (Γ), which accounts for its unique gamma emissions. The total unshielded dose at 1 cm is then scaled by the square of the distance (r, in cm) and multiplied by a shielding factor (μshield). This calculation provides a 'worst-case' or 'maximum risk' estimate because it assumes the sample is a point source and entirely neglects any self-shielding where radiation is absorbed within the mineral itself, meaning actual doses will typically be lower. The resulting dose rate (D) is expressed in microsieverts per hour (μSv/h).
D = ((AU × ΓU) + (ATh × ΓTh) + (AK × ΓK)) / r2 × μshield
Showing 6 localities.
Brazil | |
| Pires et al. (2014) |
DR Congo (TL) | |
| propriétés et structure cristalline. Bulletin de Minéralogie (3) +2 other references |
Egypt | |
| Sallam (2020) |
Finland | |
| Al-Ani et al. (2011) +2 other references |
| Al Ani |
| Al-Ani et al. (2011) |
