Pseudograndreefite
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About Pseudograndreefite
Formula:
Pb6(SO4)F10
Colour:
Colourless
Lustre:
Sub-Adamantine
Hardness:
2½
Crystal System:
Orthorhombic
Name:
For the close resemblance to grandreefite.
A rare secondary lead sulphate fluoride.
Soluble in water.
Soluble in water.
Classification of Pseudograndreefite
Approved
Approval Year:
1988
6/B.13-40
7.BD.65
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
D : With only large cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
D : With only large cations
12.1.3.1
12 : COMPOUND HALIDES
1 : Miscellaneous
12 : COMPOUND HALIDES
1 : Miscellaneous
26.23
26 : Sulphates with Halide
26 : Sulphates with Halide
Physical Properties of Pseudograndreefite
Optical Data of Pseudograndreefite
Type:
Biaxial (+)
RI values:
nα = 1.864 nβ = 1.865 nγ = 1.873
2V:
Measured: 30° , Calculated: 40°
Max Birefringence:
δ = 0.009

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r > v
Chemical Properties of Pseudograndreefite
Formula:
Pb6(SO4)F10
Elements listed:
Crystallography of Pseudograndreefite
Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
F2 2 2
Setting:
F2 2 2
Cell Parameters:
a = 8.51 Å, b = 19.57 Å, c = 8.49 Å
Ratio:
a:b:c = 0.435 : 1 : 0.434
Unit Cell V:
1,413.93 ų (Calculated from Unit Cell)
Z:
4
Type Occurrence of Pseudograndreefite
Synonyms of Pseudograndreefite
Other Language Names for Pseudograndreefite
German:Pseudograndreefit
Spanish:Pseudograndreefita
Common Associates
Associated Minerals Based on Photo Data:
Grandreefite | 1 photo of Pseudograndreefite associated with Grandreefite on mindat.org. |
Related Minerals - Nickel-Strunz Grouping
7.BD.05 | Sulphohalite | Na6(SO4)2FCl | Iso. m3m (4/m 3 2/m) |
7.BD.05 | Sulfohalite | Na6(SO4)2FCl | |
7.BD.10 | Galeite | Na15(SO4)5F4Cl | Trig. |
7.BD.10 | Schairerite | Na21(SO4)7ClF6 | Trig. 3m (3 2/m) |
7.BD.15 | Kogarkoite | Na3(SO4)F | Mon. |
7.BD.20 | Caracolite | Na3Pb2(SO4)3Cl | Mon. |
7.BD.20 | Cesanite | Na3Ca2(SO4)3(OH) | Hex. |
7.BD.20 | Aiolosite | Na4Bi(SO4)3Cl | Hex. 6/m : P63/m |
7.BD.25 | Burkeite | Na6(CO3)(SO4)2 | Orth. |
7.BD.30 | Hanksite | Na22K(SO4)9(CO3)2Cl | Hex. 6/m : P63/m |
7.BD.35 | Cannonite | Bi2(SO4)O(OH)2 | Mon. 2/m : P21/b |
7.BD.40 | Lanarkite | Pb2(SO4)O | Mon. 2/m : B2/m |
7.BD.45 | Grandreefite | Pb2(SO4)F2 | Mon. 2/m |
7.BD.50 | Itoite | Pb3Ge4+(SO4)2O2(OH)2 | Orth. mmm (2/m 2/m 2/m) : Pnma |
7.BD.55 | Chiluite | Bi3Te6+Mo6+O10.5 | Hex. |
7.BD.60 | Hectorfloresite | Na9(SO4)4(IO3) | Mon. 2/m : P21/b |
7.BD.70 | Sundiusite | Pb10(SO4)O8Cl2 | Mon. |
Related Minerals - Hey's Chemical Index of Minerals Grouping
26.1 | Kogarkoite | Na3(SO4)F | Mon. |
26.2 | Sulphohalite | Na6(SO4)2FCl | Iso. m3m (4/m 3 2/m) |
26.3 | Schairerite | Na21(SO4)7ClF6 | Trig. 3m (3 2/m) |
26.4 | Galeite | Na15(SO4)5F4Cl | Trig. |
26.5 | Connellite | Cu19(SO4)(OH)32Cl4 · 3H2O | Hex. 6 m2 : P62c |
26.6 | Chlorothionite | K2Cu(SO4)Cl2 | Orth. mmm (2/m 2/m 2/m) : Pnma |
26.7 | Kamchatkite | KCu3(SO4)2OCl | Orth. mmm (2/m 2/m 2/m) : Pnma |
26.8 | Spangolite | Cu6Al(SO4)(OH)12Cl · 3H2O | Trig. 3m : P3 1c |
26.9 | Aubertite | CuAl(SO4)2Cl · 14H2O | Tric. 1 |
26.10 | Magnesioaubertite | (Mg,Cu)Al(SO4)2Cl · 14H2O | |
26.11 | Svyazhinite | (Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O | Tric. |
26.12 | D'Ansite | Na21Mg(SO4)10Cl3 | Iso. |
26.13 | Anhydrokainite | KMg(SO4)Cl | |
26.14 | Kainite | KMg(SO4)Cl · 3H2O | Mon. 2/m : B2/m |
26.15 | Mosesite | (Hg2N)(Cl,SO4,MoO4) · H2O | Iso. |
26.16 | Kleinite | (Hg2N)(Cl,SO4) · nH2O | Hex. 6/mmm (6/m 2/m 2/m) : P63/mmc |
26.17 | Wilcoxite | MgAl(SO4)2F · 17H2O | Tric. 1 : P1 |
26.18 | Creedite | Ca3SO4Al2F8(OH)2 · 2H2O | Mon. 2/m : B2/b |
26.19 | Lannonite | Mg2Ca4Al4(SO4)8F8 · 24H2O | Tet. 4/m : I4/m |
26.20 | Chukhrovite-(Y) | Ca3(Y,Ce)[F|SO4|(AlF6)2] · 10H2O | Iso. |
26.21 | Chukhrovite-(Ce) | Ca3(Ce,Y)[F|SO4|(AlF6)2] · 10H2O | Iso. |
26.22 | Grandreefite | Pb2(SO4)F2 | Mon. 2/m |
26.24 | Sundiusite | Pb10(SO4)O8Cl2 | Mon. |
26.25 | Caracolite | Na3Pb2(SO4)3Cl | Mon. |
26.26 | Mammothite | Pb6Cu4AlSb5+O2(OH)16Cl4(SO4)2 | Mon. 2 : B2 |
26.27 | Atlasovite | K(BiO)Cu6Fe3+(SO4)5O3Cl | Tet. 4/mmm (4/m 2/m 2/m) : P4/ncc |
26.28 | Xitieshanite | Fe3+(SO4)Cl · 6H2O | Mon. |
26.29 | Nabokoite | KCu7(SO4)5(Te4+O3)OCl | Tet. |
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Pseudograndreefite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., et al (1989), Grandreefite, pseudograndreefite, laurelite, and aravaipaite: Four new minerals from the Grandreef mine, Graham Co., AZ, American Mineralogist: 74: 927-933.
Internet Links for Pseudograndreefite
mindat.org URL:
https://www.mindat.org/min-3298.html
Please feel free to link to this page.
Please feel free to link to this page.
External Links:
Mineral Dealers:
Localities for Pseudograndreefite
Locality List




All localities listed without proper references should be considered as questionable.
USA (TL) | |
| Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd.ed.: 118, 336; Kampf, A.R., et al (1989), Grandreefite, pseudograndreefite, laurelite, and aravaipaite: Four new minerals from the Grandreef mine, Graham Co., AZ, Am.Min.: 74: 927-933; Min.Rec.: 27: 296. |
Grand Reef Mine, Laurel Canyon, Grand Reef Mountain, Klondyke, Santa Teresa Mts, Aravaipa District, Graham Co., Arizona, USA