Poitevinite
A valid IMA mineral species
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About Poitevinite
Formula:
(Cu,Fe)SO4 · H2O
Colour:
Salmon pink
Hardness:
3 - 3½
Specific Gravity:
3.30
Crystal System:
Triclinic
Name:
The name honors Théophile Eugène Poitevin (1888-1978), Canadian mineralogist, Geological Survey of Canada (1913-1957), for his contributions to Canadian mineralogy.
Closely related to the (monoclinic) Kieserite Group.
End-member szomolnokite, FeSO4·H2O, is monoclinic, and synthetic CuSO4·H2O is triclinic. The cell-parameter refinements of (Fe,Cu)SO4·H2O compounds show a reduction in symmetry from monoclinic to triclinic beyond 20 mol% Cu. By Mössbauer spectroscopy significant ordering involving the cations can be observed only in members of the solid solution with more than 20 mol% Cu. Site ordering is characterized by a preference of ferrous iron for the less distorted site. The structure of the compounds with more than 20 mol% Cu agrees with the triclinic model for CuSO4·H2O. Poitevinite is a distinct mineral species because of cation site-ordering and of the triclinic distortion of the structure. (slightly modified from Giester et al. (1994)) Zn is a minor constituent at the type locality at Avoca claim, Hat Creek, Bonaparte River, Lillooet Mining Division, British Columbia, Canada (Cu0.50, Fe0.46, Zn0.04). It is not essential to the structure. (Branko Rieck)
End-member szomolnokite, FeSO4·H2O, is monoclinic, and synthetic CuSO4·H2O is triclinic. The cell-parameter refinements of (Fe,Cu)SO4·H2O compounds show a reduction in symmetry from monoclinic to triclinic beyond 20 mol% Cu. By Mössbauer spectroscopy significant ordering involving the cations can be observed only in members of the solid solution with more than 20 mol% Cu. Site ordering is characterized by a preference of ferrous iron for the less distorted site. The structure of the compounds with more than 20 mol% Cu agrees with the triclinic model for CuSO4·H2O. Poitevinite is a distinct mineral species because of cation site-ordering and of the triclinic distortion of the structure. (slightly modified from Giester et al. (1994)) Zn is a minor constituent at the type locality at Avoca claim, Hat Creek, Bonaparte River, Lillooet Mining Division, British Columbia, Canada (Cu0.50, Fe0.46, Zn0.04). It is not essential to the structure. (Branko Rieck)
Unique Identifiers
Mindat ID:
3249
Long-form identifier:
mindat:1:1:3249:6
GUID
(UUID V4):
(UUID V4):
38f745e5-52fe-4ac1-a323-49afb663af6e
IMA Classification of Poitevinite
Approved
IMA Formula:
Cu(SO4) · H2O
First published:
1964
Classification of Poitevinite
7.CB.05
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations
29.6.2.4
29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
25.2.27
25 : Sulphates
2 : Sulphates of Cu and Ag
25 : Sulphates
2 : Sulphates of Cu and Ag
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Pvi | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Poitevinite
Transparency:
Translucent
Colour:
Salmon pink
Hardness:
3 - 3½ on Mohs scale
Density:
3.30 g/cm3 (Measured) 3.30 g/cm3 (Calculated)
Optical Data of Poitevinite
Type:
Biaxial (+)
RI values:
nα = 1.610 nβ = 1.671 nγ = 1.636
2V:
Measured: 75° , Calculated: 74°
Max Birefringence:
δ = 0.026
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:
High
Dispersion:
weak
Chemistry of Poitevinite
Mindat Formula:
(Cu,Fe)SO4 · H2O
Common Impurities:
Zn
Crystallography of Poitevinite
Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.12(1) Å, b = 5.160(1) Å, c = 7.535(2) Å
α = 107.06(1)°, β = 107.40(1)°, γ = 92.73(1)°
α = 107.06(1)°, β = 107.40(1)°, γ = 92.73(1)°
Ratio:
a:b:c = 0.992 : 1 : 1.46
Unit Cell V:
179.59 ų (Calculated from Unit Cell)
Z:
2
Crystal Structure
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Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0005412 | Poitevinite | Giester G, Lengauer C L, Redhammer G J (1994) Characterization of the FeSO4.H2O - CuSO4.H2O solid solution series, and the nature of poitevinite, (Cu,Fe)SO4.H2O The Canadian Mineralogist 32 873-884 |  | 1994 | 0 | 293 | |
| 0005413 | Poitevinite | Giester G, Lengauer C L, Redhammer G J (1994) Characterization of the FeSO4.H2O - CuSO4.H2O solid solution series, and the nature of poitevinite, (Cu,Fe)SO4.H2O The Canadian Mineralogist 32 873-884 | | 1994 | 0 | 293 | |
| 0005414 | Poitevinite | Giester G, Lengauer C L, Redhammer G J (1994) Characterization of the FeSO4.H2O - CuSO4.H2O solid solution series, and the nature of poitevinite, (Cu,Fe)SO4.H2O The Canadian Mineralogist 32 873-884 | | 1994 | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.450 Å | (100) |
| 3.437 Å | (83) |
| 3.074 Å | (79) |
| 3.336 Å | (49) |
| 2.507 Å | (48) |
| 4.735 Å | (46) |
| 3.268 Å | (30) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 45b : [Other oxidized fumarolic minerals] | |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] |
Geological Setting:
Tailing piles
Type Occurrence of Poitevinite
General Appearance of Type Material:
Very fine-grained, vermiform to powdery.
Place of Conservation of Type Material:
National School of Mines, Paris, France; Canadian Geological Survey, Ottawa, 12122; Royal Ontario Museum, Toronto, Canada, M25440; National Museum of Natural History, Washington, D.C., USA, 142995.
Associated Minerals at Type Locality:
Reference:
Jambor, J.L., G.R. Lachance, and S. Courville (1964): Poitevinite, a new mineral. Canadian Mineralogist 8, 109–110.
Synonyms of Poitevinite
Other Language Names for Poitevinite
Relationship of Poitevinite to other Species
Structurally related to group(s):
| Kieserite Group | M2+SO4 · H2O |
Common Associates
Associated Minerals Based on Photo Data:
| 3 photos of Poitevinite associated with Chalcanthite | CuSO4 · 5H2O |
| 1 photo of Poitevinite associated with Bonattite | CuSO4 · 3H2O |
Related Minerals - Strunz-mindat Grouping
| 7.CB. | Sarvodaite | Al2(SO4)3 · 5H2O |
| 7.CB.02 | Voudourisite | CdSO4 · H2O |
| 7.CB.05 | Dwornikite | Ni(SO4) · H2O |
| 7.CB.05 | Gunningite | ZnSO4 · H2O |
| 7.CB.05 | Kieserite | MgSO4 · H2O |
| 7.CB.05 | Szmikite | MnSO4 · H2O |
| 7.CB.05 | Szomolnokite | FeSO4 · H2O |
| 7.CB.05 | Cobaltkieserite | CoSO4 · H2O |
| 7.CB.07 | Sanderite | MgSO4 · 2H2O |
| 7.CB.10 | Bonattite | CuSO4 · 3H2O |
| 7.CB.12 | Belogubite | CuZn(SO4)2 · 10H2O |
| 7.CB.15 | Aplowite | (Co,Mn,Ni)SO4 · 4H2O |
| 7.CB.15 | Boyleite | (Zn,Mg)SO4 · 4H2O |
| 7.CB.15 | Ilesite | (Mn,Zn,Fe)SO4 · 4H2O |
| 7.CB.15 | Rozenite | FeSO4 · 4H2O |
| 7.CB.15 | Starkeyite | MgSO4 · 4H2O |
| 7.CB.15 | Drobecite | CdSO4 · 4H2O |
| 7.CB.15 | Cranswickite | MgSO4 · 4H2O |
| 7.CB.20 | Chalcanthite | CuSO4 · 5H2O |
| 7.CB.20 | Jôkokuite | MnSO4 · 5H2O |
| 7.CB.20 | Pentahydrite | MgSO4 · 5H2O |
| 7.CB.20 | Siderotil | FeSO4 · 5H2O |
| 7.CB.25 | Bianchite | Zn(SO4) · 6H2O |
| 7.CB.25 | Chvaleticeite | Mn(SO4) · 6H2O |
| 7.CB.25 | Ferrohexahydrite | FeSO4 · 6H2O |
| 7.CB.25 | Hexahydrite | MgSO4 · 6H2O |
| 7.CB.25 | Moorhouseite | Co(SO4) · 6H2O |
| 7.CB.25 | Nickelhexahydrite | Ni(SO4) · 6H2O |
| 7.CB.30 | Retgersite | NiSO4 · 6H2O |
| 7.CB.35 | Bieberite | CoSO4 · 7H2O |
| 7.CB.35 | Boothite | CuSO4 · 7H2O |
| 7.CB.35 | Mallardite | MnSO4 · 7H2O |
| 7.CB.35 | Melanterite | Fe2+(H2O)6SO4 · H2O |
| 7.CB.35 | Zincmelanterite | (Zn,Cu,Fe)SO4 · 7H2O |
| 7.CB.35 | Alpersite | (Mg,Cu)(SO4) · 7H2O |
| 7.CB.40 | Epsomite | MgSO4 · 7H2O |
| 7.CB.40 | Goslarite | ZnSO4 · 7H2O |
| 7.CB.40 | Morenosite | NiSO4 · 7H2O |
| 7.CB.45 | Alunogen | Al2(SO4)3 · 17H2O |
| 7.CB.45 | Meta-alunogen | Al2(SO4)3 · 12H2O |
| 7.CB.50 | Aluminocoquimbite | Al2Fe2(SO4)6(H2O)12 · 6H2O |
| 7.CB.50 | Lazaridisite | 3CdSO4 · 8H2O |
| 7.CB.52 | Pararaisaite | CuMg[Te6+O4(OH)2] · 6H2O |
| 7.CB.55 | Coquimbite | AlFe3(SO4)6(H2O)12 · 6H2O |
| 7.CB.55 | Paracoquimbite | Fe4(SO4)6(H2O)12 · 6H2O |
| 7.CB.55 | Rhomboclase | (H5O2)Fe3+(SO4)2 · 2H2O |
| 7.CB.55 | Raisaite | CuMg[Te6+O4(OH)2] · 6H2O |
| 7.CB.57 | Caichengyunite | Fe2+3Al2(SO4)6 · 30H2O |
| 7.CB.60 | Kornelite | Fe2(SO4)3 · 7H2O |
| 7.CB.65 | Quenstedtite | Fe2(SO4)3 · 11H2O |
| 7.CB.70 | Lausenite | Fe2(SO4)3 · 5H2O |
| 7.CB.75 | Lishizhenite | ZnFe2(SO4)4 · 14H2O |
| 7.CB.75 | Römerite | Fe2+Fe3+2(SO4)4 · 14H2O |
| 7.CB.80 | Ransomite | CuFe2(SO4)4 · 6H2O |
| 7.CB.85 | Apjohnite | Mn2+Al2(SO4)4 · 22H2O |
| 7.CB.85 | Bílinite | Fe2+Fe3+2(SO4)4 · 22H2O |
| 7.CB.85 | Dietrichite | (Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2O |
| 7.CB.85 | Halotrichite | FeAl2(SO4)4 · 22H2O |
| 7.CB.85 | Pickeringite | MgAl2(SO4)4 · 22H2O |
| 7.CB.85 | Redingtonite | (Fe2+,Mg,Ni)(Cr,Al)2(SO4)4 · 22H2O |
| 7.CB.85 | Wupatkiite | (Co,Mg,Ni)Al2(SO4)4 · 22H2O |
| 7.CB.90 | Meridianiite | MgSO4 · 11H2O |
Other Information
Notes:
Water soluble.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Poitevinite
mindat.org URL:
https://www.mindat.org/min-3249.html
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References for Poitevinite
Reference List:
Localities for Poitevinite
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
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Quick NavTopAbout PoiteviniteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatOther InformationInternet Links References Localities Locality List
Avoca claim, Maggie claim group, Hat Creek, Hexahydrite occurrence, Bonaparte River, Lillooet Mining Division, British Columbia, Canada