Svyazhinite
A valid IMA mineral species
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About Svyazhinite
Formula:
(Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O
Colour:
Colourless (crystals), yellowish pink
Lustre:
Vitreous
Hardness:
2 - 3
Specific Gravity:
1.67
Crystal System:
Triclinic
Member of:
Name:
Named after Nikolai Vasil'evich Svyazhin (1927-1967), Russian mineralogist, Ural Mining Institute, Sverdlovsk, Russia.
Unique Identifiers
Mindat ID:
3841
Long-form identifier:
mindat:1:1:3841:2
GUID
(UUID V4):
(UUID V4):
39b95268-934b-4772-9142-496ec5273a78
Classification of Svyazhinite
Approved
Approval year:
1983
7.DB.05
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
B : With only medium-sized cations; insular octahedra and finite units
31.9.8.2
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
9 : (AB)(XO4)Zq·xH2O
31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
9 : (AB)(XO4)Zq·xH2O
26.11
26 : Sulphates with Halide
26 : Sulphates with Halide
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 |
---|---|---|
Svz | 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 Svyazhinite
Vitreous
Transparency:
Translucent
Colour:
Colourless (crystals), yellowish pink
Streak:
White
Hardness:
2 - 3 on Mohs scale
Cleavage:
Imperfect/Fair
{010}
{010}
Density:
1.67 g/cm3 (Measured) 1.69 g/cm3 (Calculated)
Optical Data of Svyazhinite
Type:
Biaxial (-)
RI values:
nα = 1.423(2) nβ = 1.439(2) nγ = 1.444(2)
2V:
Calculated: 56°
Max Birefringence:
δ = 0.021
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:
Moderate
Dispersion:
relatively strong
Chemical Properties of Svyazhinite
Formula:
(Mg,Mn2+,Ca)(Al,Fe3+)(SO4)2F · 14H2O
IMA Formula:
MgAl(SO4)2F · 14H2O
Common Impurities:
Ca
Crystallography of Svyazhinite
Crystal System:
Triclinic
Cell Parameters:
a = 6.217 Å, b = 13.306 Å, c = 6.255 Å
α = 90.15°, β = 93.56°, γ = 82.08°
α = 90.15°, β = 93.56°, γ = 82.08°
Ratio:
a:b:c = 0.467 : 1 : 0.47
Unit Cell V:
511.50 ų (Calculated from Unit Cell)
Z:
1
Twinning:
On {014}.
Comment:
Point Group: 1 or 1; Space Group: P1 or P1.
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.91 Å | (100) |
5.68 Å | (70) |
4.40 Å | (50) |
4.15 Å | (50) |
2.824 Å | (50) |
2.84 Å | (45) |
3.39 Å | (40) |
Geological Environment
Paragenetic Mode(s):
Paragenetic Mode | Earliest Age (Ga) |
---|---|
Stage 7: Great Oxidation Event | <2.4 |
47a : [Near-surface hydration of prior minerals] | |
47b : [Sulfates and sulfites] | |
47g : [Halogen-bearing surface weathering minerals] |
Type Occurrence of Svyazhinite
Place of Conservation of Type Material:
Sverdlovsk Mining Institute, Sverdlovsk; Il’menskii Preserve Museum, Miass, iz4524; Mining Institute, St. Petersburg, 1509/1; Vernadsky Geological Museum, Moscow, 53493; A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 82772.
Associated Minerals at Type Locality:
Reference:
Chesnokov, B.V., L.F. Bazhenova, I.E. Kamentsev, V.O. Polyakov, and A.F. Bushmakin (1984) Svyazhinite, (Mg, Mn, Ca)(Al, Fe3+)(SO4)2F • 14H2O – a new mineral Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1984): 113: 347-351.
Synonyms of Svyazhinite
Other Language Names for Svyazhinite
German:Svyazhinit
Spanish:Svyazhinita
Relationship of Svyazhinite to other Species
Member of:
Other Members of this group:
Aubertite | CuAl(SO4)2Cl · 14H2O | Tric. 1 : P1 |
Magnesioaubertite | (Mg,Cu)Al(SO4)2Cl · 14H2O | Tric. 1 : P1 |
Wilcoxite | MgAl(SO4)2F · 17H2O | Tric. 1 : P1 |
Common Associates
Related Minerals - Strunz-mindat Grouping
7.DB.05 | Aubertite | CuAl(SO4)2Cl · 14H2O | Tric. 1 : P1 |
7.DB.05 | Magnesioaubertite | (Mg,Cu)Al(SO4)2Cl · 14H2O | Tric. 1 : P1 |
7.DB.10 | Khademite | Al(SO4)F · 5H2O | Orth. mmm (2/m 2/m 2/m) |
7.DB.10 | Rostite | Al(SO4)(OH) · 5H2O | Orth. mmm (2/m 2/m 2/m) |
7.DB.15 | Jurbanite | Al(SO4)(OH) · 5H2O | Mon. 2/m |
7.DB.20 | Minasragrite | (V4+O)(SO4) · 5H2O | Mon. 2/m : P21/b |
7.DB.20 | Orthominasragrite | (V4+O)(SO4) · 5H2O | Orth. mm2 : Pmn21 |
7.DB.20 | Anorthominasragrite | (V4+O)(SO4) · 5H2O | Tric. 1 : P1 |
7.DB.25 | Bobjonesite | (V4+O)(SO4) · 3H2O | Mon. 2/m |
7.DB.27 | Karpovite | Tl2VO(SO4)2(H2O) | Mon. 2 : P21 |
7.DB.30 | Amarantite | Fe3+2(SO4)2O · 7H2O | Tric. 1 : P1 |
7.DB.30 | Hohmannite | Fe3+2(SO4)2O · 8H2O | Tric. 1 : P1 |
7.DB.30 | Metahohmannite | Fe3+2(SO4)2O · 4H2O | Tric. 1 : P1 |
7.DB.35 | Aluminocopiapite | Al2/3Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Calciocopiapite | CaFe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Copiapite | Fe2+Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Cuprocopiapite | Cu2+Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Ferricopiapite | Fe3+0.67Fe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Magnesiocopiapite | MgFe3+4(SO4)6(OH)2 · 20H2O | Tric. 1 : P1 |
7.DB.35 | Zincocopiapite | ZnFe3+4(SO4)6(OH)2 · 18H2O | Tric. 1 : P1 |
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 Svyazhinite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Chesnokov, B.V., L.F. Bazhenova, I.E. Kamentsev, V.O. Polyakov, and A.F. Bushmakin (1984) Svyazhinite, (Mg, Mn, Ca)(Al, Fe3+)(SO4)2F • 14H2O – a new mineral. Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva: 113: 347-351.
American Mineralogist (1985): 70: 877.
Internet Links for Svyazhinite
mindat.org URL:
https://www.mindat.org/min-3841.html
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Localities for Svyazhinite
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).
Struck out - Mineral was erroneously reported from this locality.
Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
All localities listed without proper references should be considered as questionable.
Russia (TL) | |
| Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow |
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Chernaya Rechka reserve-guard station, Ilmen Mountains, Chelyabinsk Oblast, Russia