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Ushkovite

Big Photo

Galiléia, Doce valley, Minas Gerais, Southeast Region, Brazil
© Elmar Lackner

Show Ushkovite Photos (13)
Formula:
MgFe
3+
2
[PO
 
4
]
 
2
(OH)
 
2
 · 8H
 
2
O
System:TriclinicColour:Pale yellow, ...
Lustre:Vitreous, PearlyHardness:3½
Name:Named after S.I. Ushkov (1880-1951), Russian naturalist who studied the Il'men National Forest.


Paravauxite Group.

Classification of Ushkovite

IMA status:Approved 1982
Strunz 8th edition ID:7/D.10-20
Nickel-Strunz 10th (pending) edition ID:8.DC.30

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
C : With only medium-sized cations, (OH, etc.):RO4 = 1:1 and < 2:1
Dana 8th edition ID:42.11.10.4

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
11 : (AB)3(XO4)2Zq·xH2O
Hey's CIM Ref.:19.14.11

19 : Phosphates
14 : Phosphates of Fe and other metals
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Type Occurrence of Ushkovite

Type Locality:Pit No. 232, Bol'shoi Tatkul' Lake, Ilmen Natural Reserve, Ilmen Mts, Chelyabinsk Oblast', Southern Urals, Urals Region, Russia
Year of Discovery:1983

Physical Properties of Ushkovite

Lustre:Vitreous, Pearly
Colour:Pale yellow, orange-yellow, brown
Hardness (Mohs):3½

Crystallography of Ushkovite

Crystal System:Triclinic
Cell Parameters:a = 5.19Å, b = 10.7Å, c = 7.14Å
α = 108.06°, β = 106.95°, γ = 72.7°
Ratio:a:b:c = 0.485 : 1 : 0.667
Unit Cell Volume:V 351.13 ų (Calculated from Unit Cell)

Optical Data of Ushkovite

Type:Biaxial (-)
RI values: nα = 1.584 nβ = 1.637 nγ = 1.670
2V:Measured: 50° , Calculated: 74°
Maximum Birefringence:δ = 0.086

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Moderate
Dispersion:small

Chemical Properties of Ushkovite

Formula:
MgFe
3+
2
[PO
 
4
]
 
2
(OH)
 
2
 · 8H
 
2
O
Essential elements:Fe, H, Mg, O, P
All elements listed in formula:Fe, H, Mg, O, P

Relationship of Ushkovite to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
8.DC.05Nissonite
Cu
 
2
Mg
 
2
[OH|PO
 
4
]
 
2
 · 5H
 
2
O
8.DC.07Euchroite
Cu
 
2
[OH|AsO
 
4
] · 3H
 
2
O
8.DC.10Legrandite
Zn
 
2
[OH|AsO
 
4
] · H
 
2
O
8.DC.12Strashimirite
Cu
 
8
[OH|AsO
 
4
]
 
4
 · 5H
 
2
O
8.DC.15Arthurite
CuFe
3+
2
[(OH,O)|(AsO
 
4
,PO
 
4
,SO
 
4
)]
 
2
 · 4H
 
2
O
8.DC.15Earlshannonite
Mn
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
·4H
 
2
O
8.DC.15Ojuelaite
ZnFe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
8.DC.15Whitmoreite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
8.DC.15Cobaltarthurite
(Co,Mg)Fe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
8.DC.15Bendadaite
Fe
2+
 
Fe
3+
2
(AsO
 
4
)
 
2
(OH)
 
2
 · 4H
 
2
O
8.DC.15Kunatite
CuFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
·4H
 
2
O
8.DC.15UKI-2006-(PO:FeHZn)
ZnFe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
·4H
 
2
O
8.DC.15UKI-2006-(PO:AlCuFeH)
Fe
2+
 
Al
 
3
(PO
 
4
)
 
2
(OH)
 
2
·4H
 
2
O
8.DC.17Kleemanite
ZnAl
 
2
[OH|PO
 
4
]
 
2
 · 3H
 
2
O
8.DC.20Bermanite
Mn
2+
 
(H
 
2
O)
 
4
[Mn
3+
2
(OH)
 
2
(PO
 
4
)
 
2
]
8.DC.22Kovdorskite
Mg
 
2
(PO
 
4
)(OH)·3H
 
2
O
8.DC.25Ferristrunzite
Fe
3+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
3
 · 5H
 
2
O
8.DC.25Ferrostrunzite
Fe
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
 · 6H
 
2
O
8.DC.25Metavauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.25Strunzite
Mn
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
 · 6H
 
2
O
8.DC.27Beraunite
Fe
2+
 
Fe
3+
5
[(OH)
 
5
|(PO
 
4
)
 
4
] · 4H
 
2
O
8.DC.30Gordonite
MgAl
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Laueite
Mn
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Mangangordonite
Mn
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Paravauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Pseudolaueite
Mn
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Sigloite
Fe
3+
 
Al
 
2
[(OH)
 
3
|(PO
 
4
)
 
2
] · 7H
 
2
O
8.DC.30Stewartite
Mn
2+
 
Fe
3+
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Ferrolaueite
Fe
2+
 
Fe
3+
2
(PO
 
4
)
 
2
(OH)
 
2
 · 8H
 
2
O
8.DC.30Kastningite
(Mn
2+
 
,Fe
2+
 
,Mg)Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
8.DC.30Maghrebite
MgAl
 
2
[OH|AsO
 
4
]
 
2
 · 8H
 
2
O
8.DC.32Tinticite
Fe
3+
5.34
(PO
 
4
)
 
3.62
(VO
 
4
)
 
0.38
(OH)
 
4
·6.7H
 
2
O
8.DC.35Vauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 6H
 
2
O
8.DC.37Vantasselite
Al
 
4
[OH|PO
 
4
]
 
3
 · 9H
 
2
O
8.DC.40Cacoxenite
Fe
3+
24
Al[(OH)
 
12
|O
 
6
|(PO
 
4
)
 
17
] · 17H
 
2
O
8.DC.45Gormanite
(Fe
2+
 
,Mg)
 
3
(Al,Fe
3+
 
)
 
4
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
8.DC.45Souzalite
(Mg,Fe
2+
 
)
 
3
(Al,Fe
3+
 
)
 
4
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
8.DC.47Kingite
Al
 
3
[(OH)
 
3
|(PO
 
4
)
 
2
] · 9H
 
2
O
8.DC.50Wavellite
Al
 
3
[(OH,F)
 
3
|(PO
 
4
)
 
2
] · 5H
 
2
O
8.DC.50Allanpringite
Fe
3+
3
[(OH)
 
3
|(PO
 
4
)
 
2
] · 5H
 
2
O
8.DC.52Kribergite
Al
 
5
[(OH)
 
4
|SO
 
4
|(PO
 
4
)
 
3
] · 4H
 
2
O
8.DC.55Mapimite
Zn
 
2
Fe
3+
3
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 10H
 
2
O
8.DC.57Ogdensburgite
Ca
 
2
Fe
3+
4
(Zn,Mn
2+
 
)[(OH)
 
3
|(AsO
 
4
)
 
2
]
 
2
 · 6H
 
2
O
8.DC.60Nevadaite
(Cu
2+
 
,Al,V
3+
 
)
 
6
Al
 
8
(PO
 
4
)
 
8
F
 
8
(OH)
 
2
(H
 
2
O)
 
22
8.DC.60Cloncurryite
(Cu,VO)Al
 
2
[(F,OH)|PO
 
4
]
 
2
 · 4.5-5H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
19.14.1Cyrilovite
NaFe
3+
3
[(OH)
 
2
|PO
 
4
]
 
2
 · 2H
 
2
O
19.14.2Kidwellite
NaFe
3+
9
[(OH)
 
5
|(PO
 
4
)
 
3
]
 
2
 · 5H
 
2
O
19.14.3Rosemaryite
(Na,Ca,Mn)(Mn,Fe
2+
 
)(Fe
3+
 
,Mg)Al(PO
 
4
)
 
3
19.14.4Wyllieite
(Na,Ca,Mn)(Mn,Fe)(Fe,Mg)Al(PO
 
4
)
 
3
19.14.5Ferrowyllieite
(Na,Ca,Mn)(Fe,Mn)(Fe,Fe,Mg)Al(PO
 
4
)
 
3
19.14.6Natrodufrénite
NaFe
2+
 
(Fe
3+
 
,Al)
 
5
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
19.14.7Leucophosphite
KFe
3+
2
[OH|(PO
 
4
)
 
2
] · 2H
 
2
O
19.14.8Spheniscidite
(NH
 
4
,K)(Fe
3+
 
,Al)
 
2
[OH|(PO
 
4
)
 
2
] · 2H
 
2
O
19.14.9Burangaite
(Na,Ca
 
0.5
)(Fe
2+
 
,Mg)Al
 
5
[(OH,O)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
19.14.10Satterlyite
(Fe
2+
 
,Mg,Fe
3+
 
)
 
2
[(OH,O)|PO
 
4
]
19.14.12Garyansellite
(Mg,Fe)
 
3
(PO
 
4
)
 
2
(OH,O)·1.5H
 
2
O
19.14.13Thadeuite
Ca(Mg,Fe
2+
 
)
 
3
[(OH,F)|PO
 
4
]
 
2
19.14.14Anapaite
Ca
 
2
Fe
2+
 
[PO
 
4
]
 
2
 · 4H
 
2
O
19.14.15Xanthoxenite
Ca
 
4
Fe
3+
2
[OH|(PO
 
4
)
 
2
]
 
2
 · 3H
 
2
O
19.14.16Calcioferrite
Ca
 
2
Fe
3+
2
[OH|(PO
 
4
)
 
3
] · 7H
 
2
O
19.14.17Mitridatite
Ca
 
2
Fe
3+
3
[O
 
2
|(PO
 
4
)
 
3
] · 3H
 
2
O
19.14.18Mélonjosephite
CaFe
2+
 
Fe
3+
 
[OH|(PO
 
4
)
 
2
]
19.14.19Delvauxite
CaFe
 
4
(PO
 
4
,SO
 
4
)
 
2
(OH)
 
8
·4-6H
 
2
O not confirmed·
19.14.20Collinsite
Ca
 
2
(Mg,Fe
2+
 
)[PO
 
4
]
 
2
 · 2H
 
2
O
19.14.21Segelerite
Ca
 
2
 Mg
 
2
 Fe
3+
2
(PO
 
4
)
 
4
(OH)
 
2
 · 8H
 
2
O
19.14.22Kingsmountite
Ca
 
4
(Fe
2+
 
,Mn
2+
 
)Al
 
4
[(OH)
 
2
|(PO
 
4
)
 
3
]
 
2
 · 12H
 
2
O
19.14.23Vauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 6H
 
2
O
19.14.24Metavauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
19.14.25Paravauxite
Fe
2+
 
Al
 
2
[OH|PO
 
4
]
 
2
 · 8H
 
2
O
19.14.26Sigloite
Fe
3+
 
Al
 
2
[(OH)
 
3
|(PO
 
4
)
 
2
] · 7H
 
2
O
19.14.27Cacoxenite
Fe
3+
24
Al[(OH)
 
12
|O
 
6
|(PO
 
4
)
 
17
] · 17H
 
2
O
19.14.28Koninckite
Fe
3+
 
[PO
 
4
] · 3H
 
2
O
19.14.29Lazulite
(Mg,Fe
2+
 
)Al
 
2
[OH|PO
 
4
]
 
2
19.14.30Scorzalite
(Fe
2+
 
,Mg)Al
 
2
[OH|PO
 
4
]
 
2
19.14.31Souzalite
(Mg,Fe
2+
 
)
 
3
(Al,Fe
3+
 
)
 
4
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
19.14.32Gormanite
(Fe
2+
 
,Mg)
 
3
(Al,Fe
3+
 
)
 
4
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
19.14.33Zaïrite
Bi(Fe
3+
 
,Al)
 
3
[(OH)
 
6
|(PO
 
4
)
 
2
]

Other Names for Ushkovite

Synonyms:
IMA1982-014
Other Languages:
German:Ushkovit
Russian:Ушковит
Spanish:Ushkovita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Ushkovite

Reference List:Zapiski Vserossiyskogo Mineralogicheskogo Obshchestva (1983): 112: 42-46.

American Mineralogist (1984): 69: 212-213.

Internet Links for Ushkovite

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    Localities for Ushkovite

    Hide Locality List
    The map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Argentina
     
    • Salta
    		CanMin 40:929-937.
    Australia
     
    • South Australia
      • Mt Lofty Ranges
        • South Mt Lofty Ranges
          • Kapunda
    		 V. Peisley & P. Elliott in prep
    Brazil
     
    • Southeast Region
      • Minas Gerais
        • Doce valley
        • Jequitinhonha valley
          • Itinga
    		www.minsocam.org/MSA/Special/Pig/PIG_best_shots/Pegmatites_shots.html.
    Japan
     
    • Honshu Island
      • Kinki region
        • Hyogo prefecture
          • Kobe city
    		Ganko-Gakkai Koen-Yoshi (Abstracts of the Meetings of Japanese Association of Mineralogists...) (in japanese) 40 (1995)
    Namibia
     
    • Erongo Region
      • Karibib District
        • Usakos
    		Dunn, P. J. (1985): New occurrences for ushkovite and comments on laueite. Mineralogical Record 16, 463-464
    Russia
     
    • Urals Region
      • Southern Urals
        • Chelyabinsk Oblast'
          • Ilmen Mts
            • Ilmen Natural Reserve
              • Bol'shoi Tatkul' Lake
    		Pekov, I. (1998) Minerals First discovered on the territory of the former Soviet Union 369p. Ocean Pictures, Moscow
    USA
     
    • Maine
      • Oxford Co.
        • Newry
    		King, V. and Foord, E., 1994, Mineralogy of Maine, V. 1; King, V. (ed), 2000, Mineralogy of Maine, V. 2.
    • New Hampshire
      • Grafton Co.
        • Groton
    		Rocks & Min. 80:251
    Whitmore & Lawrence, 2004. The Pegmatite Mines Known As Palermo, p. 96.
    • South Dakota
      • Custer Co.
        • Custer District
          • Fourmile
    		Am.Min. 93,940-945(2008)
    Mineral and/or Locality
    Google
     
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