 |
VOOZH | about |
|
VOOZH | about |
| Schoenite | A synonym of Picromerite | K2Mg(SO4)2 · 6H2O |
| Symbol | Source | Reference for Standard |
|---|---|---|
| Sho | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005517 | Schoepite | Finch R J, Cooper M A, Hawthorne F C, Ewing R C (1996) The crystal structure of schoepite, [(UO2)8O2(OH)12](H2O)12 The Canadian Mineralogist 34 1071-1088 | 👁 Image | 1996 | 0 | 293 |
| d-spacing | Intensity |
|---|---|
| 7.28 Å | (100) |
| 5.08 Å | (70) |
| 3.66 Å | (10) |
| 3.51 Å | (10) |
| 3.44 Å | (20) |
| 3.22 Å | (10) |
| 2.89 Å | (10) |
| 2.54 Å | (19) |
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 27 : Radioactive decay; auto-oxidation | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47f : [Uranyl (U⁶⁺) minerals] |
| Metaschoepite | (UO2)8O2(OH)12 · 10H2O | Orth. mmm(2/m2/m2/m) : Pbcn |
| Paulscherrerite | UO2(OH)2 | Mon. |
| 88 photos of Schoepite associated with Rutherfordine | (UO2)CO3 |
| 51 photos of Schoepite associated with Malachite | Cu2(CO3)(OH)2 |
| 47 photos of Schoepite associated with Cuprosklodowskite | Cu(UO2)2(SiO3OH)2 · 6H2O |
| 40 photos of Schoepite associated with Uraninite | UO2 |
| 31 photos of Schoepite associated with Ianthinite | U4+(UO2)5O7 · 10H2O |
| 31 photos of Schoepite associated with Digenite | Cu9S5 |
| 21 photos of Schoepite associated with Curite | Pb3(H2O)2[(UO2)4O4(OH)3]2 |
| 18 photos of Schoepite associated with Uranophane | Ca(UO2)2(SiO3OH)2 · 5H2O |
| 15 photos of Schoepite associated with Zircon | Zr(SiO4) |
| 15 photos of Schoepite associated with Metatorbernite | Cu(UO2)2(PO4)2 · 8H2O |
| 4.GA.05 | Paraschoepite | UO3 · 2H2O | Orth. mmm(2/m2/m2/m) : Pbca |
| 4.GA.05 | Metaschoepite | (UO2)8O2(OH)12 · 10H2O | Orth. mmm(2/m2/m2/m) : Pbcn |
| 4.GA.10 | Ianthinite | U4+(UO2)5O7 · 10H2O | Orth. mm2 : Amm2 |
| 4.GA.15 | Metastudtite | UO4 · 2H2O | Orth. mmm(2/m2/m2/m) : Pnma |
| 4.GA.15 | Studtite | [(UO2)(O2)(H2O)2] · H2O | Mon. 2/m : B2/b |
| 4.GA.20 | Paulscherrerite | UO2(OH)2 | Mon. |
| 4.GA.25 | Heisenbergite | Orth. |
| Element | % Content | Activity (Bq/kg) | Radiation Type |
|---|---|---|---|
| Uranium (U) | 72.8895% | 18,222,375 | 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
Argentina | |
| Mr. Nelson Valenzuela. |
Australia | |
| D.A.Berkman (1968) |
| Brugger et al. (2003) |
| Bottrill et al. (2008) |
Brazil | |
| Pires et al. (2014) |
Canada | |
| Cowan (1962) |
| Chatterjee (1977) |
| Reiner Mielke and Travis Olds |
China | |
| Long Lu et al. (2006) |
Czech Republic | |
| Plášil |
| - (Pavel Škácha coll.) | |
| Lapis 2002 (7/8) |
| Plášil et al. (2014) |
| |
| Hyrsl et al. (2009) | |
DR Congo (TL) | |
| Christ (1965) +2 other references |
| |
| Deliens (1996) +1 other reference |
| Lavinsky (n.d.) |
Egypt | |
| El-Naby (2009) |
| Hussein et al. (1988) | |
France | |
| - (1998) |
| J.-J. Périchaud: "Où trouver les minéraux d'Auvergne" et al. (Clermont-Ferrand) | |
| - (1998) |
| Queneau (n.d.) |
| Lièvre et al. (2002) |
| Lièvre et al. (2002) |
| - (1998) |
| - (1998) | |
| - (1998) |
| Bariand et al. (1993) +1 other reference |
| Henriot et al. (1998) |
| - (1998) | |
Gabon | |
| Janusz Janeczek (1999) |
Germany | |
| Walenta (1992) |
| Walenta (1989) +1 other reference |
| Walenta (1992) |
| |
| Dill et al. (2010) | |
| Aufschluss 69/ (7+8) +1 other reference |
| Lapis 30 (7/8) |
Hungary | |
| Szakáll et al. (1996) |
| Szakáll et al. (1996) |
Italy | |
| Daniele Ravagnani - I giacimenti ... |
| De Michele V. (1979) |
| Piccoli et al. (2007) |
| Piccoli et al. (2007) |
| luigi chiapino |
| Ravagnani (1974) |
| Campostrini et al. (2006) |
| Campostrini et al. (2005) |
Japan | |
| Akira Kato (1973) |
Mexico | |
| Murphy (2006) |
| www.swri.org (2001) +1 other reference | |
Namibia | |
| Bowell et al. (2017) |
New Zealand | |
| Christie et al. (2000) |
Norway | |
| Neumann (1985) |
| Neumann (1985) | |
Pakistan | |
| Alia et al. (2018) |
Poland | |
| Syczewski et al. (2023) |
Russia | |
| Pavel.M. Kartashov (n.d.) |
| Pavel.M. Kartashov (n.d.) |
Spain | |
| Joan Abella i Creus specimens |
| www.foro-minerales.com (n.d.) |
| www.foro-minerales.com (n.d.) | |
| www.foro-minerales.com (n.d.) |
Switzerland | |
| Stalder et al. (1998) |
| Meisser (2012) |
Tajikistan | |
| Pekov (1998) |
UK | |
| Braithwaite et al. (1990) |
| Knight (1978) +2 other references | |
| R. S. W. Braithwaite and J. R. Knight (1990) +1 other reference |
Ukraine | |
| Burakov et al. () +1 other reference |
USA | |
| Frondel (1956) +2 other references |
| Bollin et al. (1958) |
| Austin (1964) +1 other reference | |
| Granger (1962) +1 other reference |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) |
| Eckel et al. (1997) | |
| Eckel et al. (1997) |
| Gross (1965) +2 other references |
| Travis Olds collection |
| Eckel et al. (1997) | |
| King et al. (1994) |
| King (2009) |
| King (2009) | |
| Fred Davis discovery specimen and ... |
| Falster et al. (2019) |
| King et al. (1994) |
| King et al. (6) | |
| King et al. (6) | |
| King (2000) +1 other reference |
| |
| King et al. (1994) +1 other reference | |
| Frondel (1956) |
| Whitmore et al. (2004) |
| Januzzi et al. (1976) |
| Northrop et al. (1996) |
| NMBMMR Memoir 15 Geology and Technology ... | |
| Caldwell (2018) | |
| Foord et al. (1997) |
| Curt segeler |
| Smith (1991) |
| MINERALS OF THE KARNES URANIUM ... | |
| Bullock (1981) |
| Page et al. (1956) +3 other references | |
| Bullock (1981) |
| Bullock (1981) |
| Bullock (1981) | |
| USGS TEI #514 +2 other references | |
| Min News 16:1 p1 | |
| Bullock (1981) |
| Sumaila (2017) |
| Am Min 51:1567-1578 |
Uzbekistan | |
| Frost et al. (2009) |
