Rusakovite
A valid IMA mineral species
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About Rusakovite
Mikhail P. Rusakov
Formula:
(Fe3+,Al)5(VO4,PO4)2(OH)9 · 3H2O
Colour:
Yellow-orange to reddish-yellow
Lustre:
Dull
Hardness:
1½ - 2
Specific Gravity:
2.73 - 2.80
Name:
Named after Mikhail Petrovich Rusakov (Михаил Петрович Русаков) (20 November [O.S. 8 November] 1892, Yukhnov - 24 October 1963, Moscow) Kazakhstan geologist and specialist in the geology of ore deposits.
This page provides mineralogical data about Rusakovite.
Unique Identifiers
Mindat ID:
3477
Long-form identifier:
mindat:1:1:3477:3
GUID
(UUID V4):
(UUID V4):
89a41c6c-5854-4a08-a059-1495775d7c7c
IMA Classification of Rusakovite
Approved
IMA Formula:
(Fe,Al)5(VO4)2(OH)9 · 3H2O
First published:
1960
Classification of Rusakovite
8.DF.15
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
F : With only medium-sized cations, (OH,etc.):RO4 > 3:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
F : With only medium-sized cations, (OH,etc.):RO4 > 3:1
42.3.1.1
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
3 : A5(XO4)2Zq·xH2O
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
3 : A5(XO4)2Zq·xH2O
21.4.26
21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni
21 : Vanadates (and vanadates with arsenate or phosphate)
4 : Vanadates of U, Mn, Fe or Ni
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 |
|---|---|---|
| Rko | 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 Rusakovite
Dull
Colour:
Yellow-orange to reddish-yellow
Streak:
ocher-yellow
Hardness:
1½ - 2 on Mohs scale
Density:
2.73 - 2.80 g/cm3 (Measured)
Optical Data of Rusakovite
Type:
Biaxial
RI values:
nα = 1.833
Max Birefringence:
δ = 1.833
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:
strong
Chemistry of Rusakovite
Mindat Formula:
(Fe3+,Al)5(VO4,PO4)2(OH)9 · 3H2O
Crystallography of Rusakovite
Morphology:
crusts, veinlets, and reniform concretions
Comment:
Neither point group nor space group are determined.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.17 Å | (4) |
| 4.20 Å | (5) |
| 3.21 Å | (10) |
| 2.945 Å | (9) |
| 2.441 Å | (8) |
| 2.140 Å | (7) |
| 1.569 Å | (6) |
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 Rusakovite
Geological Setting of Type Material:
partially oxidized layer of carbonaceous shale
Associated Minerals at Type Locality:
Reference:
Ankinovich, E.A. (1960) A new vanadium mineral, rusakovite. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 89: 440-447.
Other Language Names for Rusakovite
German:Rusakovit
Spanish:Rusakovita
Related Minerals - Strunz-mindat Grouping
| 8.DF. | Kernowite | Cu2Fe(AsO4)(OH)4 · 4H2O |
| 8.DF. | Wiperamingaite | NaCaFe3+Al(PO4)F5(OH) · H2O |
| 8.DF.05 | Hotsonite | Al11(SO4)3(PO4)2(OH)21 · 16H2O |
| 8.DF.10 | Bolivarite | Al2(PO4)(OH)3 · 4-5H2O |
| 8.DF.10 | Evansite | Al3(PO4)(OH)6 · 6H2O |
| 8.DF.10 | Liskeardite | [(Al,Fe)32(AsO4)18(OH)42(H2O)22] · 52H2O |
| 8.DF.10 | Rosièresite | (Pb, Cu, Al, P, O, H) |
| 8.DF.20 | Liroconite | Cu2Al(AsO4)(OH)4 · 4H2O |
| 8.DF.25 | Sieleckiite | Cu3Al4(PO4)2(OH)12 · 2H2O |
| 8.DF.30 | Chalcophyllite | Cu18Al2(AsO4)4(SO4)3(OH)24 · 36H2O |
| 8.DF.35 | Parnauite | Cu9(AsO4)2(SO4)(OH)10 · 7H2O |
| 8.DF.40 | Gladiusite | Fe2(Fe,Mg)4(PO4)(OH)11(H2O) |
| 8.DF.50 | Forêtite | Cu2Al2(AsO4)(OH,O,H2O)6 |
Other Information
Notes:
The mineral is easily soluble in cold dilute acids. when treated in the closed tube it gives off acid water and turns brick-red
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 Rusakovite
mindat.org URL:
https://www.mindat.org/min-3477.html
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Please feel free to link to this page.
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References for Rusakovite
Reference List:
Localities for Rusakovite
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.
Kazakhstan (TL) | |
| Ankinovich (1960) +3 other references |
| Pekov (1998) |
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Kara-Chagyr Mountain, Kadamjay District, Batken Region, Kyrgyzstan