Raisaite
A valid IMA mineral species
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About Raisaite
Raisa Aleksandrovna Vinogradova
Formula:
CuMg[Te6+O4(OH)2] · 6H2O
Colour:
Light blue to bright sky blue
Lustre:
Vitreous
Hardness:
2
Specific Gravity:
2.82
Crystal System:
Monoclinic
Name:
The mineral is named in honour of the Russian mineralogist Dr. Raisa Aleksandrovna Vinogradova (Раиса Александровна Виноградова) (1935–2025), a specialist in ore mineralogy and in the mineralogy of Ni and Co, who worked at the Department of Mineralogy of Lomonosov Moscow State University.
New structure type. Chemically very similar to leisingite.
Structure details:
- heteropolyhedral zig-zag chains comprising alternating edge-sharing TeO4(OH)2 and CuO4(H2O)2 octahedra
- Mg(H2O)6 octahedra, linked to the chains from two sides via sharing of oxygen-bearing vertices.
- hydrogen bonds, that link adjacent chains to form "layers", and also connect the layers
Structure details:
- heteropolyhedral zig-zag chains comprising alternating edge-sharing TeO4(OH)2 and CuO4(H2O)2 octahedra
- Mg(H2O)6 octahedra, linked to the chains from two sides via sharing of oxygen-bearing vertices.
- hydrogen bonds, that link adjacent chains to form "layers", and also connect the layers
Unique Identifiers
Mindat ID:
46425
Long-form identifier:
mindat:1:1:46425:9
Similar Names
| Riesite | A valid IMA mineral species | TiO2 |
| Risséite | A synonym of Aurichalcite | |
| Roseite | (Os,Ir)S | |
| Rosite (of Huot) | A synonym of Chalcostibite | |
| Rossite | A valid IMA mineral species - grandfathered | Ca(VO3)2 · 4H2O |
| Rouseite | A valid IMA mineral species | Pb2Mn2+[AsO3]2 · 2H2O |
| Ruizite | A valid IMA mineral species | Ca2Mn23+[Si4O11(OH)2](OH)2 · 2H2O |
| Russoite | A valid IMA mineral species | (NH4)ClAs2O3(H2O)0.5 |
IMA Classification of Raisaite
Approved
IMA Formula:
Cu2+Mg[Te6+O4(OH)2]·6H2O
Approval year:
2014
First published:
2016
Type description reference:
Pekov, Igor V., Vlasov, Evgeniy A., Zubkova, Natalia V., Yapaskurt, Vasiliy O., Chukanov, Nikita V., Belakovskiy, Dmitry I., Lykova, Inna S., Apletalin, Andrey V., Zolotarev, Andrey A., Pushcharovsky, Dmitryy. (2016) Raisaite, CuMg[Te6+O4(OH)2] · 6H2O, a new mineral from Chukotka, Russia. European Journal of Mineralogy, 28 (2) 459-466 doi:10.1127/ejm/2015/0027-2490
Classification of Raisaite
7.CB.55
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
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 for Standard |
|---|---|---|
| Rsa | 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 Raisaite
Vitreous
Transparency:
Transparent
Colour:
Light blue to bright sky blue
Streak:
White
Hardness:
2 on Mohs scale
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
Probably on (100).
Probably on (100).
Fracture:
Irregular/Uneven
Density:
2.82(1) g/cm3 (Measured) 2.828 g/cm3 (Calculated)
Optical Data of Raisaite
Type:
Biaxial (+)
RI values:
nα = 1.626(3) nβ = 1.642(5) nγ = 1.665(3)
2V:
Measured: 80° (10), Calculated: 81°
Max. Birefringence:
δ = 0.039
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Moderate
Dispersion:
Weak, r < v.
Optical Extinction:
The extinction angle with Z (the crystal elongation direction) is 2(1)°.
Pleochroism:
Weak
Comments:
Z = bluish-greyish; Y = pale bluish greyish; X = colourless.
Comments:
Absorption: Z > Y > X.
Chemistry of Raisaite
Mindat Formula:
CuMg[Te6+O4(OH)2] · 6H2O
Element Weights:
Crystallography of Raisaite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/b
Setting:
C2/c
Cell Parameters:
a = 9.9078(2) Å, b = 10.1325(3) Å, c = 9.8375(2) Å
β = 91.839(2)°
β = 91.839(2)°
Ratio:
a:b:c = 0.978 : 1 : 0.971
Unit Cell V:
987.09 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Prismatic crystals with complex terminations and sometimes doubly terminated. They form radial, bush-like or chaotic groups and crystal crusts.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.088 Å | (100) |
| 5.815 Å | (35) |
| 5.690 Å | (23) |
| 4.949 Å | (91) |
| 4.507 Å | (50) |
| 3.533 Å | (17) |
| 3.310 Å | (21) |
| 2.694 Å | (29) |
Reference:
Pekov, Igor V., Vlasov, Evgeniy A., Zubkova, Natalia V., Yapaskurt, Vasiliy O., Chukanov, Nikita V., Belakovskiy, Dmitry I., Lykova, Inna S., Apletalin, Andrey V., Zolotarev, Andrey A., Pushcharovsky, Dmitryy. (2016) Raisaite, CuMg[Te6+O4(OH)2] · 6H2O, a new mineral from Chukotka, Russia. European Journal of Mineralogy, 28 (2) 459-466 doi:10.1127/ejm/2015/0027-2490
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47e : [Vanadates, chromates, manganates] |
Type Occurrence of Raisaite
General Appearance of Type Material:
Prismatic crystals (up to 0.1 × 0.6 mm), as groups or crusts (up to 0.4 × 0.6 mm) and as dense roundish clusters (up to 0.2 mm in diameter) forming botryoidal aggregates (up to 1 mm across).
Place of Conservation of Type Material:
Type material is deposited in the collections of the Fersman Mineralogical Museum of the Russian Academy of Sciences, Moscow, Russia, registration number 4575/1 (94994).
Geological Setting of Type Material:
In the oxidation zone of quartz veins.
Associated Minerals at Type Locality:
Reference:
Pekov, Igor V., Vlasov, Evgeniy A., Zubkova, Natalia V., Yapaskurt, Vasiliy O., Chukanov, Nikita V., Belakovskiy, Dmitry I., Lykova, Inna S., Apletalin, Andrey V., Zolotarev, Andrey A., Pushcharovsky, Dmitryy. (2016) Raisaite, CuMg[Te6+O4(OH)2] · 6H2O, a new mineral from Chukotka, Russia. European Journal of Mineralogy, 28 (2) 459-466 doi:10.1127/ejm/2015/0027-2490
Synonyms of Raisaite
Other Language Names for Raisaite
Common Associates
Associations Based on Photo Data:
Related Minerals - Strunz-mindat Grouping
| 7.CB. | Sarvodaite | Al2(SO4)3 · 5H2O |
| 7.CB.02 | Voudourisite | CdSO4 · H2O |
| 7.CB.05 | Szmikite | MnSO4 · H2O |
| 7.CB.05 | Szomolnokite | FeSO4 · H2O |
| 7.CB.05 | Cobaltkieserite | CoSO4 · H2O |
| 7.CB.05 | Dwornikite | Ni(SO4) · H2O |
| 7.CB.05 | Kieserite | MgSO4 · H2O |
| 7.CB.05 | Poitevinite | (Cu,Fe)SO4 · H2O |
| 7.CB.05 | Gunningite | ZnSO4 · H2O |
| 7.CB.07 | Sanderite | MgSO4 · 2H2O |
| 7.CB.10 | Bonattite | CuSO4 · 3H2O |
| 7.CB.12 | Belogubite | CuZn(SO4)2 · 10H2O |
| 7.CB.15 | Drobecite | CdSO4 · 4H2O |
| 7.CB.15 | Aplowite | CoSO4 · 4H2O |
| 7.CB.15 | Cranswickite | MgSO4 · 4H2O |
| 7.CB.15 | Rozenite | FeSO4 · 4H2O |
| 7.CB.15 | Starkeyite | MgSO4 · 4H2O |
| 7.CB.15 | Ilesite | Mn2+(SO4) · 4H2O |
| 7.CB.15 | Boyleite | ZnSO4 · 4H2O |
| 7.CB.20 | Siderotil | FeSO4 · 5H2O |
| 7.CB.20 | Jôkokuite | MnSO4 · 5H2O |
| 7.CB.20 | Pentahydrite | MgSO4 · 5H2O |
| 7.CB.20 | Chalcanthite | CuSO4 · 5H2O |
| 7.CB.25 | Chvaleticeite | Mn2+(H2O)6(SO4) |
| 7.CB.25 | Nickelhexahydrite | Ni2+(H2O)6(SO4) |
| 7.CB.25 | Hexahydrite | Mg(H2O)6(SO4) |
| 7.CB.25 | Bianchite | Zn(H2O)6(SO4) |
| 7.CB.25 | Moorhouseite | Co2+(H2O)6(SO4) |
| 7.CB.25 | Ferrohexahydrite | Fe2+(H2O)6(SO4) |
| 7.CB.30 | Retgersite | NiSO4 · 6H2O |
| 7.CB.35 | Zincmelanterite | Zn(H2O)6(SO4) · H2O |
| 7.CB.35 | Melanterite | Fe2+(H2O)6(SO4) · H2O |
| 7.CB.35 | Alpersite | (Mg,Cu2+)(H2O)6(SO4) · H2O |
| 7.CB.35 | Bieberite | Co2+(H2O)6(SO4) · H2O |
| 7.CB.35 | Boothite | Cu2+(H2O)6(SO4) · H2O |
| 7.CB.35 | Mallardite | Mn2+(H2O)6(SO4) · H2O |
| 7.CB.40 | Epsomite | MgSO4 · 7H2O |
| 7.CB.40 | Goslarite | ZnSO4 · 7H2O |
| 7.CB.40 | Morenosite | NiSO4 · 7H2O |
| 7.CB.45 | Meta-alunogen | Al2(SO4)3 · 12H2O |
| 7.CB.45 | Alunogen | Al2(SO4)3 · 17H2O |
| 7.CB.50 | Aluminocoquimbite | Al2Fe2(SO4)6(H2O)12 · 6H2O |
| 7.CB.50 | Lazaridisite | Cd3(SO4)3 · 8H2O |
| 7.CB.52 | Pararaisaite | CuMg[Te6+O4(OH)2] · 6H2O |
| 7.CB.55 | Paracoquimbite | Fe4(SO4)6(H2O)12 · 6H2O |
| 7.CB.55 | Rhomboclase | (H5O2)Fe3+(SO4)2 · 2H2O |
| 7.CB.55 | Coquimbite | AlFe3(SO4)6(H2O)12 · 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 | Römerite | Fe2+Fe3+2(SO4)4 · 14H2O |
| 7.CB.75 | Lishizhenite | ZnFe2(SO4)4 · 14H2O |
| 7.CB.80 | Ransomite | CuFe2(SO4)4 · 6H2O |
| 7.CB.85 | Dietrichite | ZnAl2(SO4)4 · 22H2O |
| 7.CB.85 | Halotrichite | Fe2+Al2(SO4)4 · 22H2O |
| 7.CB.85 | Apjohnite | Mn2+Al2(SO4)4 · 22H2O |
| 7.CB.85 | Redingtonite | Fe2+Cr3+2(SO4)4 · 22H2O |
| 7.CB.85 | Pickeringite | MgAl2(SO4)4 · 22H2O |
| 7.CB.85 | Bílinite | Fe2+Fe3+2(SO4)4 · 22H2O |
| 7.CB.85 | Wupatkiite | Co2+Al2(SO4)4 · 22H2O |
| 7.CB.90 | Meridianiite | MgSO4 · 11H2O |
Other Information
IR Spectrum:
spectrum is given
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 Raisaite
mindat.org URL:
https://www.mindat.org/min-46425.html
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References for Raisaite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2014) IMA Commission on New Minerals, Nomenclature and Classification (CNMNC), CNMNC Newsletter No. 22. Mineralogical Magazine, 78 (5) 1241-1248 doi:10.1180/minmag.2014.078.5.10
Pekov, Igor V., Vlasov, Evgeniy A., Zubkova, Natalia V., Yapaskurt, Vasiliy O., Chukanov, Nikita V., Belakovskiy, Dmitry I., Lykova, Inna S., Apletalin, Andrey V., Zolotarev, Andrey A., Pushcharovsky, Dmitryy. (2016) Raisaite, CuMg[Te6+O4(OH)2] · 6H2O, a new mineral from Chukotka, Russia. European Journal of Mineralogy, 28 (2) 459-466 doi:10.1127/ejm/2015/0027-2490
Localities for Raisaite
Showing 2 localities.
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.
Russia (TL) | |
| Williams et al. (2014) +2 other references |
USA | |
| Collected by and in the collection of ... |
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Sentyabr’skoe deposit, Ilirney ore district, Chaunskii District, Chukotka Autonomous Okrug, Russia