The sulfate fluorides are double salts that contain both sulfate and fluoride anions. They are in the class of mixed anion compounds. Some of these minerals are deposited in fumaroles.
Fluoride sulfates were first discovered by Jean Charles de Marignac in 1859. [1] [2]
Some elements such as cobalt or uranium can form complexes that contain fluoride and sulfate groups, and would be referred to as fluoro and sulfato metallates.
name | formula | ratio | system | space group | unit cell Å | volume | density | optical | references |
---|---|---|---|---|---|---|---|---|---|
Chukhrovite-(Ca) | Ca4.5Al2(SO4)F13·12H2O | 1:13 | Isometric | Fd3 | a = 16.749 Z=8 | 4698.6 | 2.23 | isotropic n = 1.432 | [3] |
Chukhrovite-(Ce) | Ca3(Y,Ce)(AlF6)2(SO4)F · 10H2O | 1:13 | Isometric | Fd3 | [4] | ||||
Chukhrovite-(Y) | Ca3(Ce,Y)(AlF6)2(SO4)F · 10H2O | 1:13 | Isometric | Fd3 | [5] | ||||
Chukhrovite-(Nd) | Ca3(Nd,Y)Al2(SO4)F13·12H2O | 1:13 | Isometric | Fd3 | a = 16.759 Z=8 | 4,707.0 | 2.42 | isotropic nα = 1.443 | [6] |
Meniaylovite | Ca4[(SO4)(SiF6)(AlF6)]F · 12H2O | 1:13 | Isometric | Fd3 | a = 16.722 Z=8 | 4,675.89 | Isotropic n = 1.43 | ||
Pseudograndreefite | Pb6(SO4)F10 | 1:10 | Orthorhombic | F2 2 2 | a = 8.51 b = 19.57 c = 8.49 Z=4 | 1,413.93 | Biaxial (+) nα = 1.864 nβ = 1.865 nγ = 1.873 2V: measured: 30° , calculated: 40° Max birefringence: δ = 0.009 | [7] | |
Creedite | Ca3SO4Al2F8(OH)2 · 2H2O | 1:8 | Monoclinic | B2/b | a = 13.936, b = 8.606, c = 9.985 β = 94.39° Z=4 | 1,194.02 | 2.713 | Biaxial (-) nα = 1.461 nβ = 1.478 nγ = 1.485 Max birefringence: δ = 0.024 | [8] |
Thermessaite | K2AlF3(SO4) | 1:3 | Orthorhombic | Pbcn | a = 10.81 b = 8.336 c = 6.822 | 614.75 | 2.77 | ||
Grandreefite | Pb2(SO4)F2 | 1:2 | monoclinic | A2/a | a = 8.667 b = 4.4419 c = 14.242 β = 107.418 Z=4 | 523.15 | 7.15 | Biaxial (+) nα = 1.872 nβ = 1.873 nγ = 1.897 2V: Measured: 23° Max Birefringence: δ = 0.025 | [9] |
Arangasite | Al2F(PO4)(SO4) · 9H2O | 1:1 | monoclinic | P2/a | a = 7.073 b = 9.634 c = 10.827 β = 100.40 Z = 2 | 725.7 | 2.01 | Biaxial (+) ?nα = 1.493(5) nγ = 1.485(5) Max birefringence: δ = 0.008 | [10] [11] |
Khademite | Al(SO4)F · 5H2O | 1:1 | orthorhombic | a = 11.17 b = 13.05 c = 10.88 | 1,585.96 | 1.925 | Biaxial (-) nα = 1.440 nβ = 1.460 nγ = 1.487 2V: measured: 68° calculated: 84° Max birefringence δ = 0.047 colourless | [12] | |
Kogarkoite | Na3(SO4)F | 1:1 | Monoclinic | ?P21 | a = 18.07 b = 6.94 c = 11.44 β = 107.72° Z=12 | 1,366.58 | 2.676 | Biaxial (+) nα = 1.439 nβ = 1.439 nγ = 1.442 Max Birefringence: δ = 0.003 | [13] |
kononovite | NaMg(SO4)F | 1:1 | monoclinic | C2/c | a = 6.662 b = 8.584 c = 7.035 β = 114.06 Z=4 | 367.4 | 2.91 | biaxial (+), nα = 1.488 nβ = 1.491 nγ = 1.496 2Vmeas = 75° Max birefringence: δ = 0.008 | [14] |
Lannonite | Mg2Ca4Al4(SO4)8F8 · 24H2O | 8:8 | Tetragonal | I4/m | a = 6.860 c = 28.053 | 1,320.16 | 2.22 | Uniaxial (+) nω = 1.460 nε = 1.478 Max Birefringence:δ = 0.018 | [15] |
Sulphohalite | Na6(SO4)2FCl | 2:1 | Isometric | Fm3m | Isotropic | [16] | |||
Uklonskovite | NaMgSO4F•2H2O | 1:1 | monoclinic | a = 7.2 Å, b = 7.21 Å, c = 5.73 β = 113.23° | 273.34 | Biaxial (+) nα = 1.476 nγ = 1.500 Max Birefringence δ = 0.024 | [17] | ||
Vlodavetsite | AlCa2(SO4)2F2Cl · 4H2O | 2:2 | Tetragonal | I4/m | a = 6.870, c = 13.342 Z=2 | 629.70 | Uniaxial (+) nω = 1.509 nε = 1.526 Max birefringence: δ = 0.017 | [18] | |
Schairerite | Na21(SO4)7ClF6 | 7:6 | trigonal | 3_2/m | a = 12.17 c = 19.29 | 2,474.25 | 2.67 | Uniaxial (+) nω = 1.440 nε = 1.445 Max birefringence: δ = 0.005 | [19] |
Galeite | Na15(SO4)5F4Cl | 5:4 | Trigonal | a = 12.17 c = 13.94 | 1,788.03 | Uniaxial (+) nω = 1.447 nε = 1.449 Max Birefringence: δ = 0.002 | [20] | ||
Fluorellestadite | Ca10(SiO4)3(SO4)3F2 | 3:2 | hexagonal | a = 9.53 c = 6.91 | 543.49 | 3.03 | Uniaxial (-) nω = 1.655 nε = 1.650 Max birefringence:δ = 0.005 | [21] | |
Straßmannite | Al(UO2)(SO4)2F·16H2O | 2:1 | monoclinic | C2/c | a = 11.0187 b = 8.3284 c = 26.673 β = 97.426° | 2427.2 | 2.20 | pale yellowish green Biaxial (-) nα = 1.477(2) nβ = 1.485(2) nγ = 1.489(2) 2V: measured: 70° calculated: 70.2° Max birefringence: δ = 0.012 | [22] |
Svyazhinite | (Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O | 2:1 | triclinic | a = 6.21 b = 13.3 c = 6.25 α = 90.15°, β = 93.56°, γ = 82.08° | 510.29 | Biaxial (-) nα = 1.423 nβ = 1.439 nγ = 1.444 2V: calculated: 56° Max birefringence: δ = 0.021 | [23] | ||
Wilcoxite | MgAl(SO4)2F · 17H2O | 2:1 | triclinic | P1 | a = 6.644, b = 6.749, c = 14.892 α = 79.664°, β = 80.113°, γ = 62.487 | 579.6 | 1.58 | Biaxial (-) nα = 1.424 nβ = 1.436 nγ = 1.438 2V: measured: 48° , calculated: 44° Max birefringence: δ = 0.014 | [24] |
Krasheninnikovite | KNa2CaMg(SO4)3F | 3:1 | hexagonal | P63/mcm | a = 16.6682 c = 6.9007 Z = 6 | 1660.36 | 2.68 | Uniaxial (-) nω = 1.500 nε = 1.492 Max birefringence: δ = 0.008 | [25] |
Shuvalovite | K2(Ca2Na)(SO4)3F | 3:1 | orthorhombic | Pnma | a = 13.2383 b = 10.3023 c = 8.9909 Z = 4 | 1226.22 | 2.64 | biaxial (−), nα = 1.493 nβ = 1.498 nγ = 1.498 2Vmeasured ≤ 20 | [26] |
Thermessaite-(NH4) | (NH4)2AlSO4F3 | 1:3 | orthorhombic | Pbcn | a = 11.3005 b = 8.6125 c = 6.8501 Z = 4 | 666.69 | [27] |
name | formula | MW | ratio | system | space group | unit cell | volume | density | optical | CAS | references |
---|---|---|---|---|---|---|---|---|---|---|---|
LiMgFSO4 | 1:1 | triclinic | P1 | a = 5.1623 b = 5.388 c = 7.073 α = 106.68 β=107.40 and γ=97.50° Z=2 | [28] | ||||||
NaMgSO4F | 1:1 | monoclinic | C2/c | Z=4 | 109.802 | 2.84 | [29] | ||||
Na2AlSO4F3 | 1:1 | monoclinic | P2/c | a=6.3562 b=6.2899 c=7.1146 β=115.687° Z=2 | 256.33 | 2.928 | [30] | ||||
Li4NH4Al(SO4)2F4 | 2:4 | monoclinic | C2/c | a=13.6561 b=4.9761 c=13.9919 β=92.135° Z=4 | 950.2 | 2.383 | [30] | ||||
Na4TiF4(SO4)2 | 2:4 | [31] | |||||||||
β-K3[SO4]F | 1:1 | tetragonal | I4/mcm | a= 7.2961 c= 10.854 | [32] | ||||||
α-K3[SO4]F | 1:1 | cubic | Pm3m | a≈5.43 ≥585 °C | [32] | ||||||
KMgSO4F | 178.47 | 1:1 | orthorhombic | Pna21 | a=12.973 b=6.4585 c=10.635 Z=8 | 891.1 | 2.661 | colourless | [33] [34] | ||
Li6K3Al(SO4)4F4 | 4:4 | triclinic | P1 | a=5.0304 b=9.5690 c=9.7078 α=70.968° β=75.531° γ=75.183° Z=1 | 420.08 | 2.554 | [30] | ||||
sodium calcium sulfapatite | Na6Ca4(SO4)6F2 | 6:2 | |||||||||
K3Ca2(SO4)3F | 3:1 | orthorhombic | Pn21a | a=13.467 b=10.521 c=9.167 Z=4 | 1299.9 | [35] | |||||
[N2C10H12] TiF4SO4 | 378.16? | 1:4 | triclinic | P1 | a=8.691 b=9.208 c=9.288 α=68.56 β=84.30 γ=81.59 Z=2 | 683.6 | 1.837 | colourless | [31] | ||
[N2C10H12]TiF2(SO4)2 | 436.22? | 2:2 | triclinic | P1 | a=4.5768 b=8.9162 c=10.1236 α=112.888 β=95.196 γ=98.706 Z=1 | 371.11 | 1.952 | colourless | [31] | ||
Rb2TiF2(SO4)2 · 2H2O | 1:1 | [36] | |||||||||
Cs2TiF2(SO4)2 · 3H2O | 1:1 | [36] | |||||||||
[N2C6H16]V(SO4)2F | 378.27 | 2:1 | monoclinic | P21/c | a=10.262 b =17.761 c=7.0518 β=93.93 Z=4 | 1282.3 | 1.959 | green | [31] | ||
Na2VF3SO4 | 1:3 | [31] | |||||||||
Na3CrF2(SO4)2 | 2:2 | [31] | |||||||||
LiMnSO4F | 1:1 | monoclinic | a=13.2406 b=6.4082 c=10.0229 β=120.499 | 732.76 | [37] | ||||||
[N2C6H16]2+Mn2F2(SO4)2 | 2:2 | [31] | |||||||||
Li2MnF3(SO4) | 1:3 | pink-brown | [38] | ||||||||
(NH4)2MnF3(SO4) | 1:3 | pink-brown | [38] | ||||||||
Na2MnF3(SO4) | 1:3 | pink-brown | [38] | ||||||||
Dipotassium trifluorosulfato manganate(III) | K2MnF3(SO4) | 1:3 | pink-brown | [38] | |||||||
FeFSO4 | 170.91 | 1:1 | monoclinic | C2/c | a = 7.3037 b = 7.0753 c = 7.3117 β = 119.758° | 328.017 | 3.461 | [39] | |||
K2FeF3SO4 | 1:3 | [31] | |||||||||
Li3FeF2(SO4)2·H2O | 2:2 | [31] | |||||||||
[N2C6H16]Fe(SO4)2F | 383.18 | 2:1 | monoclinic | P21/c | a=10.2220 b=17.6599 c=7.0437 β=93.894 Z=4 | 1268.59 | 2.006 | brown | [31] | ||
LiFeFSO4 | 177.85 | 1:1 | triclinic | P1 | a = 5.1751 b = 5.4915 c = 7.2211 α = 106.506° β = 107.178° γ=97.865° | 182.44 | 3.237 | grass green | [39] | ||
sodium ferrous sulfate fluoride | NaFeFSO4 | 193.91 | 1:1 | monoclinic | P21/c | a = 6.6739 b = 8.6989 c = 7.1869 β = 113.525° | 382.567 | 3.366 | [39] | ||
sodium ferrous sulfate fluoride dihydrate | NaFeFSO4·2H2O | 1:1 | monoclinic | P21/m | a=5.75959 b=7.38273 c=7.25047 β=113.3225 | 283.109 | white | [40] | |||
trisodium ferric disulfate difluoride | Na3Fe(SO4)2F2 | 2:2 | orthorhombic | Pnca | a = 6.6419 b = 8.8115 c = 14.0023 | [41] | |||||
NaCoFSO4 | 1:1 | monoclinic | C2/c | a=6.6687 b=8.6251 c=7.1444 β=114.323 | 374.46 | [42] | |||||
NaCoFSO4·2H2O | 1:1 | monoclinic | P21/m | a=5.73364 b=7.31498 c=7.18640 β=113.5028 | 276.40 | pink | [40] | ||||
NH4CoFSO4·2H2O | 1:1 | [43] | |||||||||
KCoFSO4·2H2O | 1:1 | [43] | |||||||||
NaNiFSO4·2H2O | 1:1 | monoclinic | P21/m | a=5.70118 b=7.27603 c=7.15634 β=113.8883 | 271.429 | green | [40] | ||||
LiZnSO4F | 1:1 | orthorhombic | Pnma | 7.40357 b=6.32995 c=7.42016 | 347.740 | [44] | |||||
KZnSO4F | 219.53 | 1:1 | orthorhombic | Pna21 | a=13.0602 b=6.4913 c=10.7106 Z=8 | 908.02 | 3.212 | transparent <190 nm | [34] | ||
K2Zn3(SO4)(HSO4)2F4 | 1:4 | orthorhombic | Cmc21 | a=17.725 b=7.6650 c=9.7505 Z=4 | 1324.7 | 3.212 | colourless | [45] | |||
Li4RbAl(SO4)2F4 | 2:4 | monoclinic | C2/c | a=13.6503 b=4.984 c=14.0081 β=91.509° Z=4 | 948.82 | 2.858 | [46] | ||||
Y(SO4)F | 203.97 | 1:1 | orthorhombic | Pnma | a=8.3128, b=6.9255, c=6.3905 Z=4 | 367.90 | 3.682 | [47] | |||
YSO4F·H2O | 1:1 | monoclinic | P21/n | a=4.9707 b=7.306 c=11.493 β =96.95° | birefringence 0.0357 at 546 nm | [48] | |||||
Y2Cu(OH)3(SO4)2F·H2O | 521.52 | 2:1 | monoclinic | P21/n | a=11.6889, b=6.8660, c=12.5280, β=97.092° Z=4 | 997.8 | 3.472 | blue | [47] | ||
KYSO4F2 | 1:2 | monoclinic | P21/m | a=6.4402 b=5.7784 c=6.992 β=113.684° Z=2 | 238.30 | 3.652 | band gap 7.79 eV; birefringence 0.015 @ 546.1 nm | [49] | |||
RbYSO4F2 | 1:2 | monoclinic | P21/m | a=6.5347 b=5.8212 c=7.1383 β=114.332° Z=2 | 247.42 | 4.140 | band gap 7.82 eV; birefringence 0.02 @ 546.1 nm | [49] | |||
Zr2O2F2SO4 · 6H2O | 1:2 | [50] | |||||||||
α-K3ZrF5SO4 · H2O | 1:5 | [36] | |||||||||
K2ZrF4SO4 | 1:4 | [36] | |||||||||
K2ZrF2(SO4)2 · 2.5H2O | 2:2 | [36] | |||||||||
K3Zr2F9SO4 · 2H2O | 1:9 | [36] | |||||||||
(NH4)3Zr2F9SO4 · 2H2O | 1:9 | [36] | |||||||||
(NH4)2ZrF4SO4 | 1:4 | [36] | |||||||||
(NH4)2ZrF2(SO4)2 · 2.5H2O | 2:2 | [36] | |||||||||
Rb2ZrF4SO4 | 1:4 | [36] | |||||||||
Rb2ZrF2(SO4)2 · 3H2O | 2:2 | [36] | |||||||||
Rb3Zr2F9SO4 ·2H2O | 1:9 | [36] | |||||||||
RbZr2O2F(SO4)2 · 5H2O | 2:1 | [36] | |||||||||
Cs2ZrF4SO4 | 1:4 | [36] | |||||||||
Cs2ZrF2(SO4)2 · 2H2O | 2:2 | [36] | |||||||||
Cs8Zr4F2(SO4)11 · 16H2O | 11:2 | [36] | |||||||||
CsZr2O2F(SO4)2 · 6H2O | 2:1 | [36] | |||||||||
Zr2O2F2SO4 · 5H2O | 1:2 | [36] | |||||||||
triindium trifluoride sulfate ditellurite hydrate | In3(SO4)(TeO3)2F3(H2O) | 866.74 | 1:3 | orthorhombic | P212121 | a=8.3115 b=9.4341 c=14.8068 | 1161.0 | 4.959 | band gap 4.10 eV; white | [51] | |
4,4'-bipyridine distannous difluoride disulfate | (C10H10N2)0.5[SnF(SO4)] | 2:2 | triclinic | P1 | a=4.726 b=7.935 c=11.203 α = 81.05° β = 87.59° γ=73.70° Z=2 | 398.3 | 2.608 | colourless | [52] | ||
diantimony dipotassium hexafluoride sulfate | K2SO4·(SbF3)2 | 531.76 | 1:6 | monoclinic | P21/c | a=9.1962 b=5.6523 c=19.2354 β =103.209 Z=4 | 973.40 | 3.629 | colourless | [53] | |
diantimony dirubidium hexafluoride sulfate | Rb2SO4·(SbF3)2 | 624.50 | 1:6 | monoclinic | P21 | a=9.405 b=5.7210 c=9.879 β = 103.850 Z=2 | 516.1 | 4.018 | colourless | [53] | |
tetraantimony hexarubidium dodecafluoride trisulfate | Rb6Sb4F12(SO4)3 | 1515.989 | 3:12 | trigonal | P3 | a=16.9490 c=7.5405 Z=2 | 1875.94 | 4.026 | white | 53168-89-1 | [54] [55] |
hexaammonium dodecafluorotrisulfatotetraantimonate(III) | [NH4]6Sb4F12(SO4)3 | 3:12 | trigonal | P3 | a=17.07 c=7.515 Z=3 | 1896 | 2.92 | [56] | |||
hexarubidium dodecafluorotrisulfatotetraantimonate(III) | Rb6Sb4F12(SO4)3 | 3:12 | [56] | ||||||||
Li4CsAl(SO4)2F4 | 2:4 | monoclinic | C2/c | a=13.574 b=5.0427 c=14.258 β=91.961° Z=4 | 975.7 | 3.103 | [46] | ||||
tetraantimony hexacaesium dodecafluoride trisulfate | Cs6Sb4F12(SO4)3 | 1800.601 | 3:12 | triclinic | P1 | a=7.9044 b=10.5139 c=17.3534 al=90.350 β = 90.151 ga=104.797 Z=4 | 1394.3 | 4.289 | white | 53200-54-7 | [54] [57] |
antimony caesium difluoride sulfate | CsSbF2SO4 | 388.72 | 1:2 | orthorhombic | Pna21 | a=9.9759 b=11.6616 c=5.2968 | 515.20 | 4.19 | clear, non-linear SH | [58] | |
LiLa2F3(SO4)2 | 2:3 | monoclinic | I2/a | a = 8.283, b = 6.947, c = 14.209 β = 95.30° Z=4 | [59] | ||||||
CeF2(SO4) | 1:2 | orthorhombic | Pca21 | a=8.3668 b=6.3600 c=8.3862 | birefringence 0.361@ 546 nm; SHG 8×KDP | [60] | |||||
NdFSO4·H2O | 277.32 | 1:1 | monoclinic | P21/n | a = 4.9948 b = 7.3684 c = 11.6366 β = 96.672° Z=4 | 425.37 | 4.330 | pink | [61] | ||
NaPr2F3(SO4)2 | 2:3 | monoclinic | I2/a | a = 8.223, b = 6.9212, c = 14.199, β = 95.88° Z=4 | light green | [62] | |||||
LiEr2F3(SO4)2 | 2:3 | orthorhombic | Pbcn | a = 14.791, b = 6.336, c = 8.137 | [59] | ||||||
hexa(triethylenetriammonium) tetrasamarium tetradecasulfate difluoride | [C4H16N3]6[Sm4F2(SO4)14] | 2621.43 | 14:2 | triclinic | P1 | a = 11.1988 b = 11.4073 c = 16.2666 α = 89.901°, β = 82.406°, γ = 67.757° Z=1 | 1903.9 | 2.286 | colourless | [61] | |
TbFSO4·H2O | 292.00 | 1:1 | monoclinic | P21/n | a = 5.0014 b = 7.377 c = 11.651 β = 96.692° Z=4 | 426.9 | 4.543 | colourless | [61] | ||
gadolinium fluoride sulfate | GdF[SO4] | 1:1 | orthorhombic | Pnma | a=8.436 b=7.0176 c=6.4338 Z=4 | [63] | |||||
γ-K2HfF2(SO4)2 · 2H2O | 2:2 | [36] | |||||||||
K2HfF2(SO4)2 · 2.5H2O | 2:2 | [36] | |||||||||
Na6Pb4(SO4)6F2 | 6:2 | [64] | |||||||||
ThSO4F2.H2O | 1:2 | monoclinic | P21n | a = 6.9065 b = 6.9256 c = 10.589 β = 96.755° Z = 4 | 502.98 | colourless | [65] | ||||
potassium catena-di—fluoro-difluorotetraoxo-di—sulphato-diuranate(VI) hydrate | K2UF2O2(SO4)·H2O | 1:2 | monoclinic | P21/c | a = 9.263 b = 8.672 c = 11.019 β= 101.60° Z = 4 | 867.1 | 3.83 | greenish yellow | [66] [67] | ||
(NH4)2[UO2F2(SO4)] | triclinic | P1 | a=9.73 b=10.28 c=11.37 α = 107.4°, β = 111.9°, γ =106.9 Z=2 | greenish yellow | [67] | ||||||
(NH4)6[(UO2)2F4(SO4)3] | triclinic | P1 | a=9.35 b=9.85 c=11.25 α = 109.2°, β = 113.1°, γ =102.5 Z=1 | greenish yellow | [67] | ||||||
Cs2[(UO2)2F4(SO4)] | greenish yellow | [67] | |||||||||
(NH4)[UO2F(SO4)] | triclinic | P1 | a=8.99 b=7.12 c=7.42 α = 114.5°, β = 117.4°, γ =103.2 Z=1 | 1.92 | greenish yellow | [67] | |||||
RbUO2SO4F | orthorhombic | Pca21 | a=25.353 b=6.735 c=11.496 Z=12 | [68] [69] | |||||||
[N2C6H16][UO2F2(SO4)] | 520.29 | 1:2 | triclinic | P1 | a=6.9105 b=9.6605 =10.1033 α=72.6594(14) β=87.068 γ=77.9568 Z=2 | 629.62 | 2.744 | yellow | [70] | ||
[N2C6H16][UO2F(SO4)]2 | 884.37 | 2:2 | orthorhombic | Pmmn | a=6.9503 b=17.2147 c=7.0867 Z=2 | 847.90 | 3.464 | yellow | [70] | ||
[N2C3H12][UO2F(SO4)]2·H2O | 862.32 | 2:2 | orthorhombic | Pnma | a=13.5775 b=14.6180 c=8.1168 Z=4 | 1610.99 | 3.555 | yellow | [70] | ||
[N2C5H14][UO2F(H2O)(SO4)]2 | 907.38 | 2:2 | monoclinic | P121/n1 | a=8.4354 b=15.5581 c=14.8442 β =96.666 Z=4 | 1935.0 | 3.115 | yellow | [70] | ||
[N2C6H18]2[UO2F(SO4)]4·H2O | 1792.80 | 4:4 | triclinic | P1 | a=10.8832 b=10.9386 c=16.5325 α=75.6604 β=73.6101 γ=89.7726 Z=2 | 1824.73 | 3.263 | yellow | [70] | ||
[N2C3H12][UO2F(SO4)]2·H2O | 864.34 | 2:2 | monoclinic | P121/n1 | a=6.7745 b=8.1589 c=14.3661 β =94.556 Z=2 | 791.54 | 3.626 | yellow | [70] | ||
diammonium hydrazinium triuranium(IV) tetrafluoride hexasulfate | U4+3F4(SO4)6·2NH4·H3N-NH3 | 1436.6 | 6:4 | monoclinic | C2/c | a=15.2309 b=8.77998 c=18.8590 β=105.5030 Z=4 | 2432.69 | 4.392 | green | [71] | |
Copper(II) sulfate, also known as copper sulphate, is an inorganic compound with the chemical formula CuSO4. It forms hydrates CuSO4·nH2O, where n can range from 1 to 7. The pentahydrate (n = 5), a bright blue crystal, is the most commonly encountered hydrate of copper(II) sulfate, while its anhydrous form is white. Older names for the pentahydrate include blue vitriol, bluestone, vitriol of copper, and Roman vitriol. It exothermically dissolves in water to give the aquo complex [Cu(H2O)6]2+, which has octahedral molecular geometry. The structure of the solid pentahydrate reveals a polymeric structure wherein copper is again octahedral but bound to four water ligands. The Cu(II)(H2O)4 centers are interconnected by sulfate anions to form chains.
Langbeinites are a family of crystalline substances based on the structure of langbeinite with general formula M2M'2(SO4)3, where M is a large univalent cation, and M' is a small divalent cation. The sulfate group, SO2−4, can be substituted by other tetrahedral anions with a double negative charge such as tetrafluoroberyllate, selenate, chromate, molybdate, or tungstates. Although monofluorophosphates are predicted, they have not been described. By redistributing charges other anions with the same shape such as phosphate also form langbeinite structures. In these the M' atom must have a greater charge to balance the extra three negative charges.
Sodium magnesium sulfate is a double sulfate of sodium and magnesium. There are a number of different stoichiometries and degrees of hydration with different crystal structures, and many are minerals. Members include:
The borate fluorides or fluoroborates are compounds containing borate or complex borate ions along with fluoride ions that form salts with cations such as metals. They are in the broader category of mixed anion compounds. They are not to be confused with tetrafluoroborates (BF4) or the fluorooxoborates which have fluorine bonded to boron.
A carbonate fluoride, fluoride carbonate, fluorocarbonate or fluocarbonate is a double salt containing both carbonate and fluoride. The salts are usually insoluble in water, and can have more than one kind of metal cation to make more complex compounds. Rare-earth fluorocarbonates are particularly important as ore minerals for the light rare-earth elements lanthanum, cerium and neodymium. Bastnäsite is the most important source of these elements. Other artificial compounds are under investigation as non-linear optical materials and for transparency in the ultraviolet, with effects over a dozen times greater than Potassium dideuterium phosphate.
The fluoride phosphates or phosphate fluorides are inorganic double salts that contain both fluoride and phosphate anions. In mineralogy, Hey's Chemical Index of Minerals groups these as 22.1. The Nickel-Strunz grouping is 8.BN.
The borate carbonates are mixed anion compounds containing both borate and carbonate ions. Compared to mixed anion compounds containing halides, these are quite rare. They are hard to make, requiring higher temperatures, which are likely to decompose carbonate to carbon dioxide. The reason for the difficulty of formation is that when entering a crystal lattice, the anions have to be correctly located, and correctly oriented. They are also known as carbonatoborates or borocarbonates. Although these compounds have been termed carboborate, that word also refers to the C=B=C5− anion, or CB11H12− anion. This last anion should be called 1-carba-closo-dodecaborate or monocarba-closo-dodecaborate.
The sulfate chlorides are double salts containing both sulfate (SO42–) and chloride (Cl–) anions. They are distinct from the chlorosulfates, which have a chlorine atom attached to the sulfur as the ClSO3− anion.
The sulfate carbonates are a compound carbonates, or mixed anion compounds that contain sulfate and carbonate ions. Sulfate carbonate minerals are in the 7.DG and 5.BF Nickel-Strunz groupings.
The sulfate nitrates are a family of double salts that contain both sulfate and nitrate ions (NO3−, SO42−). They are in the class of mixed anion compounds. A few rare minerals are in this class. Two sulfate nitrates are in the class of anthropogenic compounds, accidentally made as a result of human activities in fertilizers that are a mix of ammonium nitrate and ammonium sulfate, and also in the atmosphere as polluting ammonia, nitrogen dioxide, and sulfur dioxide react with the oxygen and water there to form solid particles. The nitro group (NO3−) can act as a ligand, and complexes containing it can form salts with sulfate.
The iodate fluorides are chemical compounds which contain both iodate and fluoride anions (IO3− and F−). In these compounds fluorine is not bound to iodine as it is in fluoroiodates.
The borosulfates are heteropoly anion compounds which have sulfate groups attached to boron atoms. Other possible terms are sulfatoborates or boron-sulfur oxides. The ratio of sulfate to borate reflects the degree of condensation. With [B(SO4)4]5- there is no condensation, each ion stands alone. In [B(SO4)3]3- the anions are linked into a chain, a chain of loops, or as [B2(SO4)6]6− in a cycle. Finally in [B(SO4)2]− the sulfate and borate tetrahedra are all linked into a two or three-dimensional network. These arrangements of oxygen around boron and sulfur can have forms resembling silicates. The first borosulfate to be discovered was K5[B(SO4)4] in 2012. Over 75 unique compounds are known.
Borate sulfates are mixed anion compounds containing separate borate and sulfate anions. They are distinct from the borosulfates where the borate is linked to a sulfate via a common oxygen atom.
The borate chlorides are chemical compounds that contain both borate ions and chloride ions. They are mixed anion compounds. Many of them are minerals. Those minerals that crystallise with water (hydrates) may be found in evaporite deposits formed when mineral water has dried out.
Sulfidostannates, or thiostannates are chemical compounds containing anions composed of tin linked with sulfur. They can be considered as stannates with sulfur substituting for oxygen. Related compounds include the thiosilicates, and thiogermanates, and by varying the chalcogen: selenostannates, and tellurostannates. Oxothiostannates have oxygen in addition to sulfur. Thiostannates can be classed as chalcogenidometalates, thiometallates, chalcogenidotetrelates, thiotetrelates, and chalcogenidostannates. Tin is almost always in the +4 oxidation state in thiostannates, although a couple of mixed sulfides in the +2 state are known,
A tellurite fluoride is a mixed anion compound containing tellurite and fluoride ions. They have also been called oxyfluorotellurate(IV) where IV is the oxidation state of tellurium in tellurite.
The phosphate sulfates are mixed anion compounds containing both phosphate and sulfate ions. Related compounds include the arsenate sulfates, phosphate selenates, and arsenate selenates.
Oxalate sulfates are mixed anion compounds containing oxalate and sulfate. They are mostly transparent, and any colour comes from the cations.
Selenite sulfates are mixed anion compounds containing both selenite (SeO32−) and sulfate (SO42−) anions.
Iodate sulfates are mixed anion compounds that contain both iodate and sulfate anions. Iodate sulfates have been investigated as optical second harmonic generators, and for separation of rare earth elements. Related compounds include the iodate selenates and chromate iodates.
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