# Phosphate sulfate

The phosphate sulfates are mixed anion compounds containing both phosphate and sulfate ions. Related compounds include the arsenate sulfates, phosphate selenates, and arsenate selenates.
Some hydrogen phosphate sulfates are superprotonic conductors.

## List

| | chem | crystal system | space group | unit cell | volume | density | comment |
| Sanjuanite | Al$_2$(PO$_4$)(SO$_4$)(OH)·9H$_2$O | | | | | | |
| Hotsonite | Al$_{11}$(SO$_4$)$_3$(PO$_4$)$_2$(OH)$_{21}$ · 16H$_2$O | triclinic | | a=11.23, b=11.66 c=10.55 α=112° 32′, β=107° 32′ γ=64° 27′ | | | refract: α = 1.519 γ = 1.521 |
| Arangasite | Al$_2$F(PO$_4$)(SO$_4$)·9H$_2$O | monoclinic | P2/a | a = 7.073, b = 9.634, c = 10.827, β = 100.40°, Z = 2 | 725.7 | | |
| peisleyite | Na$_3$Al$_{16}$(SO$_4$)$_2$(PO$_4$)$_{10}$(OH)$_{17}$ · 20H$_2$O | monoclinic | | a 13.31, b 12.62, c 23.15, β 110.0°, Z = 2 | | | discredited |
| peisleyite | Na2Al9[(P,S)O4]8(OH)6·28H2O | triclinic | P1 | a = 9.28, b = 11.98, c = 13.25, α = 91.3, β = 75.6, γ = 67.67°, Z = 4 | 1308 | | |
| Woodhouseite | CaAl$_3$(PO$_4$)(SO$_4$)(OH)$_6$ | trigonal | R3m | a = 6.993, c = 16.386 | 693.95 | 3.0 | Uniaxial (+) n$_ω$ = 1.636 n$_ε$ = 1.647 Birefringence: δ = 0.011 |
| Ardéalite | Ca$_2$H(PO$_4$)(SO$_4$)•4H$_2$O | monoclinic | | a = 5.721, b = 30.95, c = 6.265, β= 117.26° Z = 4 | 986.11 | 2.32 | |
| Destinezite Diadochite | Fe$_2$(PO$_4$)(SO$_4$)(OH)•6H$_2$O | triclinic | P1 | a = 9.570, b = 9.716, c = 7.313, α = 98.74°, β = 107.90°, γ = 63.86° Z = 2 | | | |
| bohuslavite | Fe$^{III}$$_4$(PO$_4$)$_3$(SO$_4$)(OH)(H$_2$O)$_{10}$·nH$_2$O (5 ≤ n ≤ 14) | triclinic | P1 | a = 13.376 b = 13.338 c = 10.863 α = 92.80, β = 91.03, γ = 119.92°, Z = 2 | 1675.7 | | pink |
| Borickyite | (Ca,Mg)(Fe$^{3+}$,Al)$_4$(PO$_4$,SO$_4$,CO$_3$)(OH)$_8$·3–7.5H$_2$O | | | | | | |
| Camaronesite | [Fe$^{3+}$(H$_2$O)$_2$(PO$_3$OH)]$_2$(SO$_4$)·1–2H$_2$O | trigonal | R32 | a = 9.0833, c = 42.944, Z = 9 | 3068.5 | | |
| | Fe$^{3+}$$_4$(PO$_4$)$_3$(SO$_4$)(OH)·18H$_2$O | triclinic | P1 | a=13.376, b 13.338, c 10.863, α 92.80, β 91.03, γ 119.92° | 1675.7 | | |
| vanderheydenite | Zn$_6$(PO$_4$)$_2$(SO$_4$)(OH)$_4$·7H$_2$O | monoclinic | P2$_1$/n | a = 6.204 b = 19.619, c = 7.782, β = 90.67° | 947.1 | | biaxial (–) α = 1.565, β = 1.580 γ = 1.582. 2V = 39.8° |
| Svanbergite | SrAl$_3$(PO$_4$)(SO$_4$)(OH)$_6$ | trigonal | R3m | a = 6.97, c = 16.59 Z=3 | 697.98 | 3.2 | Uniaxial (+) n$_ω$ = 1.631 - 1.635 n$_ε$ = 1.646 - 1.649 Birefringence: δ = 0.015 |
| Birchite | Cd$_2$Cu$_2$(PO$_4$)$_2$(SO$_4$) ·5H$_2$O | | | a = 10.489 b = 20.901 c = 6.155 Z=4 | 1349.6 | 3.647 | biaxial positive, n$_α$ = 1.624, n$_β$ = 1.636, n$_γ$ = 1.669, 2V$_{calc}$ = +63°. |
| Corkite | PbFe$_3$(OH)$_6$SO$_4$PO$_4$ | trigonal | R3m | a = 7.32, c = 17.02 Z=3 | 781.2 | 4.295 | Uniaxial (-) n$_ω$ = 1.930 n$_ε$ = 1.930 n = 1.93 - 1.96 Birefringence 0.03 |
| | BaAl$_3$(PO$_4$)(SO$_4$)(OH)$_6$ | trigonal | R3m | a = , c = Z=3 | | | |
| hinsdalite | (Pb,Sr)Al$_3$(PO$_4$)(SO$_4$)(OH)$_6$ | | | | | | |
| Tsumebite | Pb$_2$Cu(PO$_4$,SO$_4$)(OH) | | | | | | |
| Delvauxite | CaFe$_4$$^{3+}$(PO$_4$,SO$_4$)$_2$(OH)$_8$·4–6H$_2$O | | | | | | |
| Rossiantonite | Al$_3$(PO$_4$)(SO$_4$)$_2$(OH)$_2$(H$_2$O)$_{10}$·4H$_2$O | triclinic | P1 | a = 10.3410, b = 10.9600, c = 11.1446, α = 86.985, β = 65.727, γ = 75.064°, Z = 2 | 1110.5 | | |
| Schlossmacherite | (H$_3$O,Ca)Al$_3$(AsO$_4$,PO$_4$,SO$_4$)$_2$(OH)$_6$ | | | | | | |
| Arthurite | Cu(Fe$^{3+}$)$_2$(AsO$_4$,PO$_4$,SO$_4$)$_2$(O,OH)$_2$·4(H$_2$O) | | | | | | |
| cobaltarthurite | | | | | | | |
| Phosphoinnelite | Ba$_4$Na$_3$Ti$_3$Si$_4$O$_{14}$(PO$_4$,SO$_4$)$_2$(O,F)$_3$ | triclinic | P1? | a = 5.38, b = 7.10, c = 14.76; α = 99.00°, β = 94.94°, γ = 90.14° Z = 1 | 555 | 3.82 | biaxial (+), α = 1.730, β = 1.745, and γ = 1.764, 2V 90° |
| Francolite | (Ca, Mg, Sr, Na)$_{10}$(PO$_4$, SO$_4$, CO$_3$)$_6$F$_{2–3}$ | | | | | | |
| | Al$_4$(UO$_2$)$_2$(PO$_4$)$_4$(SO$_4$)(OH)$_2$ · 18H$_2$O | | | | | | |
| | Al$_4$(UO$_2$)$_2$(PO$_4$)$_4$(SO$_4$)(OH)$_2$ · 20H$_2$O | | | | | | |
| Coconinoite | Fe$_2$Al$_2$(UO$_2$)$_2$(PO$_4$)$_4$(SO$_4$)(OH)$_2$ · 20H$_2$O | monoclinic | C2/c | a =12.45, b = 12.96, c = 17.22, β = 105.7° | | | |
| xiangjiangite | Fe$_2$Al$_2$(UO$_2$)$_2$(PO$_4$)$_4$(SO$_4$)(OH)$_2$ · 22H$_2$O | tetragonal | | a = 7.17 Å, b = 7.17 Å, c = 22.22 Å Z=1 | 1,142 | | Biaxial (-) n$_α$ = 1.558 n$_β$ = 1.576 n$_γ$ = 1.593 2V: 87° |

## Artificial

| chem | mw | crystal system | space group | unit cell Å | volume | density | comment |
| [H$_4$N$^+$]$_2$·HSO$_4$$^−$·H$_2$PO$_4$$^−$ | | | | | | | |
| NH$_4$(HSO$_4$)$_{0.45}$(H$_2$PO$_4$)$_{0.55}$ | | orthorhombic | | | | | |
| 18-crown[6]·[NH$_4$][H$_2$PO$_4$]$_{0.5}$[HSO$_4$]$_{0.5}$·H$_2$O | | orthrhombic | F2dd | a=8.710 b= 28.868 c=31.206 Z=16 | 7846 | 1.346 | dehydrate at 70° |
| [(C$_2$H$_5$)$_4$N$^+$]$_2$·HSO$_4$$^−$·H$_2$PO$_4$$^−$ | | Monoclinic | C2/c | a = 28.0787 b = 11.8671 c = 14.1533 β = 100.739° Z=8 | 4633.46 | 1.303 | colourless; decompose at 353K |
| (NH$_2$CH$_2$COOH)$_3$(H$_2$SO$_4$)$_{0.7}$(H$_3$PO$_4$)$_{0.3}$ | | monoclinic | | | | | called TGSP; colourless; ferroelectric, curie point 51 °C; pyroelectric |
| Na(HSO$_4$)(H$_3$PO$_4$) | | monoclinic | P 2$_1$ | a = 5.449, b = 6.832, c = 8.718, β = 95.88°, Z = 2 | 322.8 | | |
| K$_2$(HSO$_4$)(H$_2$PO$_4$) | | monoclinic | P 2$_1$/c | a = 11.150, b = 7.371, c = 9.436, β = 92.29°, Z = 4 | 774.9 | | |
| K$_4$(HSO$_4$)$_3$(H$_2$PO$_4$) | | triclinic | P 1 | a = 7.217, b = 7.521, c = 7.574, α = 71.52°, β = 88.28°, γ = 86.20°, Z = 1 | 389.1 | | |
| K$_4$(PO$_2$F$_2$)$_2$(S$_2$O$_7$) | 534.46 | monoclinic | C2/c | a = 13.00, b = 7.543, c = 19.01, β = 130.07°, Z = 4 | 1426.5 | 2.489 | colourless; pyrosulfate + difluorophosphate |
| K$_3$[O$_3$SOPO$_2$OSO$_3$] | | | | | | | |
| H$_{1−x}$Ti$_2$(PO$_4$)$_{3−x}$(SO$_4$)$_x$ (x=0.5–1) | | | | | | | |
| Na$_2$MgTi(SO$_4$)(PO$_4$)$_2$ | | trigonal | R3c | a=8.4796 c=21.8091 Z=6 | 1358.1 | 2.818 | |
| K$_2$MgTi(SO$_4$)(PO$_4$)$_2$ | | cubic | P2$_1$3 | a=9.8743 Z=4 | 962.84 | 2.872 | |
| Ca$_{10-x}$Na$_x$(PO$_4$)$_{6-x}$(SO$_4$)$_x$F$_2$ | | monoclinic | | | | | |
| NaFe$_2$(PO$_4$)(SO$_4$)$_2$ | | hexagonal | R3c | a=8.4243 c=21.973 | | | |
| NaFe$_{1.4}$V$_{0.6}$(PO$_4$)(SO$_4$)$_2$ | | | | | | | |
| [Ni(C$_{14}$H$_{10}$N$_4$)$_3$]$_4$(PO$_4$)$_2$(SO$_4$) (C$_{14}$H$_{10}$N$_4$=2,2'-bi-1H-benzimidazole) | 3331.96 | cubic | I43d | a = 24.964 Z=4 | 15558 | 1.423 | green |
| Rb$_2$(HSO$_4$)(H$_2$PO$_4$) | | monoclinic | P2$_1$/n | a=7.448, b=7.552, c=7.632, β=100.47°, Z=2 | 422.1 | | |
| Rb$_2$(HSO$_4$)(H$_2$PO$_4$) | | monoclinic | P2$_1$/c | a=11.555, b=7.536, c=9.593, β=91.56, Z=4 | 853.0 | | at 160K |
| Rb$_4$(HSO$_4$)$_3$(H$_2$PO$_4$) | | orthorhombic | P2$_1$2$_1$2 | a=7.612, b=14.795, c=7.446, Z=2 | 838.6 | | |
| 18-crown[6]·Rb[H$_2$PO$_4$]$_{0.5}$[HSO$_4$]$_{0.5}$·3H$_2$O | | monoclinic | C2/c | a=19.802 b=8.447 c=25.777 β=101.00° Z=8 | 4232 | 1.572 | dehydrate at 70° |
| Rb$_2$MgTi(SO$_4$)(PO$_4$)$_2$ | | | | | | | |
| Sr$_4$(PO$_4$)$_2$SO$_4$ | | | | | | | |
| NaZrMg(PO$_4$)(SO$_4$)$_2$ | | hexagonal | R3c | | | | |
| NaZrCo(PO$_4$)(SO$_4$)$_2$ | | hexagonal | R3c | | | | |
| NaZrNi(PO$_4$)(SO$_4$)$_2$ | | hexagonal | R3c | | | | |
| NaZrCu(PO$_4$)(SO$_4$)$_2$ | | hexagonal | R3c | | | | |
| NaZrZn(PO$_4$)(SO$_4$)$_2$ | | hexagonal | R3c | | | | |
| NaZrAl(PO$_4$)$_2$(SO$_4$) | | hexagonal | R3c | | | | |
| NaZrFe(PO$_4$)2(SO$_4$) | | hexagonal | R3c | | | | |
| H$_3$OSb$_2$(SO$_4$)$_2$(PO$_4$) | | triclinic | P1 | a=5.134 b=7.908 c=12.855, α=81.401° β=87.253° γ=86.49° | | | |
| KSb$_2$(SO$_4$)$_2$(PO$_4$) | | triclinic | P1 | a=5.1453 =7.9149 c=12.6146, α=82.054° β=87.715° γ=86.655° | | | |
| RbSb$_2$(SO$_4$)$_2$(PO$_4$) | | triclinic | P1 | a=5.1531 b=7.957 c=12.845, α=81.801° β=87.676° γ=86.703° | | | |
| Cs$_2$(HSO$_4$)(H$_2$PO$_4$) | | cubic | | a$_o$=4.926 | | | >105 °C but can be supercooled |
| Cs$_2$(HSO$_4$)(H$_2$PO$_4$) | | monoclinic | P2$_1$/n | a = 7.856 b = 7.732 c = 7.827, β= 99.92° Z=2 | 468.3 | 3.261 | can substitute 2.3% ammonium; proton conductivity at 110 °C is 3×10$^{−3}$ Ω$^{−1}$cm$^{−1}$ |
| Cs$_3$(HSO$_4$)$_2$(H$_2$PO$_4$) | | monoclinic | C2/c | a=19.824 b=7.859 c=19.047 β=100.20° Z=4 | 1387.2 | 3.302 | stable against water solution 298-313K; phase transition at 411K |
| Cs$_4$(HSO$_4$)$_3$(H$_2$PO$_4$) | | monoclinic | C2/c | a=19.945 b=7.8565 c=8.9949 β=100.119° Z=3 | 1387.5 | 3.301 | colourless |
| Cs$_5$(HSO$_4$)$_2$(H$_2$PO$_4$)$_3$ | | cubic | I43d | a=14.5668 | | | over 381K goes to tetragonal a=4.965 c=5.016 |
| Cs$_6$H(HSO$_4$)$_3$(H$_2$PO$_4$)$_4$ | | cubic | I43d | a=14.4758 | 3033.38 | 3.236 | colourless |
| Cs$_5$(HSO$_4$)$_3$(H$_2$PO$_4$)$_2$ | | monoclinic | C2/c | a=34.07 Å,b=7.661,c=9.158,β=90.44° | 2390 | 3.198 | |
| 18-crown[6]·Cs[H$_2$PO$_4$]$_{0.5}$[HSO$_4$]$_{0.5}$·3H$_2$O | | monoclinic | C2/c | a=19.840 b=8.460 c=26.19 β=101.14 Z=8 | 4313 | 1.689 | dehydrate at 70° |
| CsNH$_4$(HSO$_4$)(H$_2$PO$_4$) | | | | | | | |
| Cs$_3$NH$_4$(HSO$_4$)$_3$(H$_2$PO$_4$) | | | | | | | |
| Cs$_2$MgTi(SO$_4$)(PO$_4$)$_2$ | | | | | | | |
| Ba$_4$(PO$_4$)$_2$SO$_4$ | | | | | | | |
| NaBa$_6$Zr(PO$_4$)$_5$SO$_4$ | | cubic | I43d | a = 10.5449 Z=4 | 1172.54 | | eulytite mineral structure |
| Ba$_2$Sr2(PO$_4$)$_2$SO$_4$ | | | | | | | |
| Ba$_3$Sr(PO$_4$)$_2$SO$_4$ | | | | | | | |
| Ce$_2$O(HPO$_4$)$_2$(SO$_4$). 4H$_2$O | | | | | | | Ce$^{IV}$ |
| Ce$_2$O(HPO$_4$)$_{2.4}$(SO$_4$)$_{0.6}$. 2H$_2$O | | | | | | | Ce$^{III}$ |
| [enH$_2$]$_{0.5}$[Ce$^{III}$(PO$_4$)(HSO$_4$)(OH$_2$)] | | monoclinic | P2$_1$/a | a=12.999 b=7.150 c=9.212 β=95.33 | | | cream colour |
| KSr$_2$Eu(PO$_4$)$_2$SO$_4$ | | | | | | | |
| RbSr$_2$Eu(PO$_4$)$_2$SO$_4$ | | | | | | | |
| CsSr$_2$Eu(PO$_4$)$_2$SO$_4$ | | | | | | | |
| [enH$_2$]$_{0.5}$[Ho(HPO$_4$)(SO$_4$)(H$_2$O)] | | monoclinic | P2$_1$/a | a = 12.938 b = 6.834 c = 9.100 β = 88.12° | | | |
| Pb$_2$Mg$_2$(PO$_4$)$_2$SO$_4$ | | | | | | | |
| MgPb$_3$(PO$_4$)$_2$(SO$_4$) | | cubic | I43d | a = 10.299 Z=4 | 1092.4 | 5.67 | |
| CaPb$_3$(PO$_4$)$_2$(SO$_4$) | | cubic | I43d | a = 10.296 Z=4 | 1091.5 | 5.77 | |
| MnPb$_3$(PO$_4$)$_2$(SO$_4$) | | cubic | I43d | a = 10.258 Z=4 | 1079.4 | 5.92 | |
| CoPb$_3$(PO$_4$)$_2$(SO$_4$) | | cubic | I43d | a = 10.356 Z=4 | 1110.6 | 5.78 | |
| NiPb$_3$(PO$_4$)$_2$(SO$_4$) | | cubic | I43d | a = 10.434 Z=4 | 1135.9 | 5.65 | |
| CuPb$_3$(PO$_4$)$_2$(SO$_4$) | | cubic | I43d | a = 10.422 Z=4 | 1132.0 | 5.70 | |
| ZnPb$_3$(PO$_4$)$_2$(SO$_4$) | | cubic | I43d | a = 10.449 Z=4 | 1140.8 | 5.67 | |
| CdPb$_3$(PO$_4$)$_2$(SO$_4$) | | cubic | I43d | a = 10.315 Z=4 | 1097.5 | 6.17 | |
| SrPb$_3$(PO$_4$)$_2$(SO$_4$) | | cubic | I43d | a = 10.369 Z=4 | 1114.8 | 5.93 | |
| Th$_2$(PO$_4$)$_2$SO$_4$·2 H$_2$O | | | | | | | decompose 450 °C |

## Organic derivatives

A catenated sulfophosphate has the sulfur and phosphorus joined by an oxygen atom. In biochemistry, metabolism of sulfate may use such a group, for example with adenosine-5'-phosphosulfate.