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Ushkovite

A valid IMA mineral species
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07191710015524801386973.jpg
Ushkovite

Taquaral Seco mine, Taquaral, Itinga, Minas Gerais, Brazil
05509310015590720735847.jpg
Ushkovite

Galiléia, Minas Gerais, Brazil
07039330017056355717243.jpg
Ushkovite

Sapucaia mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
00969320015496272936324.jpg
Ushkovite

Taquaral Seco mine, Taquaral, Itinga, Minas Gerais, Brazil
06946430015544713275802.jpg
Ushkovite

Galiléia, Minas Gerais, Brazil
03109640017055898064783.jpg
Ushkovite

Sapucaia mine, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil
07191710015524801386973.jpg
Ushkovite

Taquaral Seco mine, Taquaral, Itinga, Minas Gerais, Brazil
05509310015590720735847.jpg
Ushkovite

Galiléia, Minas Gerais, Brazil
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About UshkoviteHide

03067750015817799181558.jpg
Sergei L. Ushkov
Formula:
MgFe3+2(PO4)2(OH)2 · 8H2O
Colour:
Pale yellow, orange-yellow, orange, orange brown
Lustre:
Vitreous, Sub-Vitreous, Greasy, Pearly
Hardness:
3½
Specific Gravity:
2.38
Crystal System:
Triclinic
Name:
Named in 1983 by B. V. Chesnokov, V. A. Valisov, G. Y. Cherepivskaya, and M. G. Gorskaya in honor of Sergei L'vovich Ushkov (Сергей Львович Ушков) (1880 Russia - 26 October 1951 Russia), naturalist who studied the Il'men National Forest.
Isostructural with:
Laueite, Paravauxite
Occurs as short, striated bladed crystals with acute terminations.


Unique IdentifiersHide

Mindat ID:
4129
Long-form identifier:
mindat:1:1:4129:0
GUID
(UUID V4):
a3658ea6-f452-46e6-89a8-65a57a9bf331

IMA Classification of UshkoviteHide

Classification of UshkoviteHide

Strunz-mindat (2024):
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 ed.:
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

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
UkvIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of UshkoviteHide

Lustre:
Vitreous, Sub-Vitreous, Greasy, Pearly
Transparency:
Transparent, Translucent
Comment:
pearly on cleavages, greasy on fractures
Colour:
Pale yellow, orange-yellow, orange, orange brown
Streak:
Pale yellow
Hardness:
3½ on Mohs scale
Tenacity:
Very brittle
Cleavage:
Perfect
{010}
Density:
2.38 g/cm3 (Measured)    2.40 g/cm3 (Calculated)

Optical Data of UshkoviteHide

Type:
Biaxial (-)
RI values:
nα = 1.584(2) nβ = 1.637(2) nγ = 1.670(2)
2V:
Measured: 50° , Calculated: 74°
Birefringence:
0.084
Max Birefringence:
δ = 0.086
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Dispersion:
small
Optical Extinction:
Y^c = 26°, X, Y in {010}
Pleochroism:
Non-pleochroic

Chemistry of UshkoviteHide

Mindat Formula:
MgFe3+2(PO4)2(OH)2 · 8H2O
Elements listed:
Fe, H, Mg, O, P - search for minerals with similar chemistry

Crystallography of UshkoviteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.3468(4) Å, b = 10.592(1) Å, c = 7.2251(7) Å
α = 108.278(7)°, β = 111.739(7)°, γ = 71.626(7)°
Ratio:
a:b:c = 0.505 : 1 : 0.682
Unit Cell V:
351.59 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Usually simple, striated pinacoidal crystals, rarely with modifying faces

Twinning:
On {hk0}.

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0005775UshkoviteGalliski M A, Hawthorne F C (2002) Refinement of the crystal structure of ushkovite from Nevados De Palermo, Republica Argentina The Canadian Mineralogist 40 929-9372002Nevados De Palermo, Republica Argentina0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.86 Å(100)
6.57 Å(80)
4.95 Å(50)
4.85 Å(50)
4.01 Å(40)
3.28 Å(60)
3.20 Å(80)
Comments:
Similar to Laueite

Geological EnvironmentHide

Paragenetic Mode(s):
Paragenetic ModeEarliest Age (Ga)
Stage 7: Great Oxidation Event<2.4
47a : [Near-surface hydration of prior minerals]
47c : [Carbonates, phosphates, borates, nitrates]
47e : [Vanadates, chromates, manganates]
Geological Setting:
Late stage mineralization in granite pegmatites

Type Occurrence of UshkoviteHide

Type Locality:
ⓘ Pit No. 232, Bol'shoi Tatkul' Lake, Argayashsky District, Chelyabinsk Oblast, Russia
General Appearance of Type Material:
Small orange short lath-like crystals
Place of Conservation of Type Material:
Il’menskii Preserve Museum, Miass, iz4523; Mining Institute, St. Petersburg, 1293/1; Vernadsky Geological Museum, Moscow, 53492; A.E. Fersman Mineralogical Museum, Academy of Sciences, Moscow, Russia, 82364.
Geological Setting of Type Material:
Granite pegmatite
Associated Minerals at Type Locality:
TripliteMitridatiteManganese OxidesBerauniteBeraunite
Reference:
Chesnokov, B.V., Vilisov, V.A., Cherepivskaya, G.E., Gorskaya, M.G. (1983) Ushkovite, MgFe3+2(PO4)2(OH)2·8H2O. Zapiski Vsesoyuznogo Mineralogicheskogo Obshchestva: 112(1): 42-46.
Download:
https://rruff.info/rruff_1.0/uploads/ZVMO112N1_42.pdf

Synonyms of UshkoviteHide

Other Language Names for UshkoviteHide

German:Ushkovit
Spanish:Ushkovita

Relationship of Ushkovite to other SpeciesHide

Member of:
Laueite Group > Laueite Supergroup
Other Members of this group:
FerrolaueiteFe2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
KummeriteMn2+Fe3+Al(PO4)2(OH)2 · 8H2OTric. 1 : P1
LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric. 1 : P1
StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1

Common AssociatesHide

Associated Minerals Based on Photo Data:
15 photos of Ushkovite associated with AtencioiteCa2Fe2+3Mg2Be4(PO4)6(OH)4 · 6H2O
4 photos of Ushkovite associated with DufréniteCa0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O
4 photos of Ushkovite associated with BerylloniteNaBePO4
3 photos of Ushkovite associated with XanthoxeniteCa4Fe3+2(PO4)4(OH)2 · 3H2O
3 photos of Ushkovite associated with Smoky QuartzSiO2
3 photos of Ushkovite associated with LeucophosphiteKFe3+2(PO4)2(OH) · 2H2O
3 photos of Ushkovite associated with ChildreniteFe2+Al(PO4)(OH)2 · H2O
2 photos of Ushkovite associated with Roscherite Group
2 photos of Ushkovite associated with RoscheriteCa2Mn2+5Be4(PO4)6(OH)4 · 6H2O
2 photos of Ushkovite associated with KosnariteKZr2(PO4)3

Related Minerals - Strunz-mindat GroupingHide

8.DC.IanbruceiteZn2(AsO4)(OH) · 3H2OMon. 2/m : P21/b
8.DC.CésarferreiraiteFe2+ Fe3+2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.FerrivauxiteFe3+Al2(PO4)2(OH)3 · 5H2OTric. 1 : P1
8.DC.05NissoniteCu2Mg2(PO4)2(OH)2 · 5H2OMon. 2/m : B2/b
8.DC.07EuchroiteCu2(AsO4)(OH) · 3H2OOrth. 2 2 2 : P21 21 21
8.DC.10LegranditeZn2(AsO4)(OH) · H2OMon. 2/m : P21/b
8.DC.12StrashimiriteCu8(AsO4)4(OH)4 · 5H2OMon.
8.DC.15ArthuriteCuFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15EarlshannoniteMn2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15OjuelaiteZnFe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15WhitmoreiteFe2+Fe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15Cobaltarthurite(Co,Mg)Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15BendadaiteFe2+Fe3+2(AsO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15KunatiteCuFe3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P21/b
8.DC.15UM2006-27-PO:FeHZnZnFe3+2(PO4)2(OH)2 · 4H2OMon.
8.DC.15UKI-2006-(PO:AlCuFeH)Fe2+Al3+2(PO4)2(OH)2 · 4H2O
8.DC.17KleemaniteZnAl2(PO4)2(OH)2 · 3H2OMon.
8.DC.20BermaniteMn2+Mn3+2(PO4)2(OH)2 · 4H2OMon. 2/m : P2/b
8.DC.20CoralloiteMn2+Mn3+2(AsO4)2(OH)2 · 4H2OTric. 1 : P1
8.DC.20MagnesiobermaniteMgMn3+2(PO4)2(OH)2 · 4H2OMon. 2 : P21
8.DC.22KovdorskiteMg2(PO4)(OH) · 3H2OMon. 2/m : P21/b
8.DC.25FerristrunziteFe3+Fe3+2(PO4)2(OH)3 · 5H2OTric.
8.DC.25FerrostrunziteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric.
8.DC.25MetavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.25MetavivianiteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.25ZincostrunziteZnFe3+2(PO4)2(OH)2 · 6.5H2OTric. 1 : P1
8.DC.27BerauniteFe3+6(PO4)4O(OH)4 · 6H2OMon. m : Bb
8.DC.27TvrdýiteFe2+Fe3+2 Al3(PO4)4(OH)5(H2O)4 · 2H2OMon. 2/m : B2/b
8.DC.27ZincoberauniteZnFe3+5(PO4)4(OH)5 · 6H2OMon. 2/m : B2/b
8.DC.30GordoniteMgAl2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30LaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MangangordoniteMn2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30ParavauxiteFe2+Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30PseudolaueiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OMon. 2/m : P21/b
8.DC.30SigloiteFe3+Al2(PO4)2(OH)3 · 7H2OTric. 1 : P1
8.DC.30StewartiteMn2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30FerrolaueiteFe2+Fe3+2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30Kastningite(Mn2+,Fe2+,Mg)Al2(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30MaghrebiteMgAl2(AsO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.30NordgauiteMnAl2(PO4)2(F,OH)2 · 5H2OTric. 1 : P1
8.DC.30Kayrobertsonite[MnAl2(PO4)2(OH)2(H2O)4] · 2H2OTric. 1 : P1
8.DC.30KummeriteMn2+Fe3+Al(PO4)2(OH)2 · 8H2OTric. 1 : P1
8.DC.32TinticiteFe3+3(PO4)2(OH)3 · 3H2OTric. 1 : P1
8.DC.32KamarizaiteFe3+3(AsO4)2(OH)3 · 3H2OTric. 1 : P1
8.DC.35VauxiteFe2+Al2(PO4)2(OH)2 · 6H2OTric. 1 : P1
8.DC.37VantasseliteAl4(PO4)3(OH)3 · 9H2OOrth.
8.DC.40CacoxeniteFe3+24AlO6(PO4)17(OH)12 · 75H2OHex. 6/m : P63/m
8.DC.45Gormanite(Fe2+,Mg)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric.
8.DC.45Souzalite(Mg,Fe2+)3(Al,Fe3+)4(PO4)4(OH)6 · 2H2OTric. 1
8.DC.47KingiteAl3(PO4)2F2(OH) · 7H2OTric.
8.DC.50WavelliteAl3(PO4)2(OH,F)3 · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.50AllanpringiteFe3+3(PO4)2(OH)3 · 5H2OMon. 2/m : P21/m
8.DC.50FluorwavelliteAl3(PO4)2(OH)2F · 5H2OOrth. mmm (2/m 2/m 2/m)
8.DC.52KribergiteAl5(PO4)3(SO4)(OH)4 · 4H2OTric. 1 : P1
8.DC.55MapimiteZn2Fe3+3(AsO4)3(OH)4 · 10H2OMon. m : Bm
8.DC.57OgdensburgiteCa2Fe3+4(Zn,Mn2+)(AsO4)4(OH)6 · 6H2OOrth. mmm (2/m 2/m 2/m) : Cmmm
8.DC.60Nevadaite(Cu2+,Al,V3+)6Al8(PO4)8F8(OH)2 · 22H2OOrth. mmm (2/m 2/m 2/m)
8.DC.60CloncurryiteCu0.5(VO)0.5Al2(PO4)2F2 · 5H2OMon. 2/m : P21/b
8.DC.62KenngottiteMn2+3Fe3+4(PO4)4(OH)6(H2O)2 Mon. 2/m : P2/b
8.DC.67MolinelloiteCu(H2O)(OH)V4+O(V5+O4)Tric. 1 : P1
8.DC.70WhitecapsiteH16Fe2+5Fe3+14Sb3+6(AsO4)18O16 · 120H2OHex. 6/m : P63/m
8.DC.75HeimitePbCu2(AsO4)(OH)3 · 2H2OMon. 2/m
8.DC.80LedneviteCu[PO3(OH)] · H2OMon. 2/m : P21/b

Fluorescence of UshkoviteHide

In UV light:
Not fluorescent in UV

Other InformationHide

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 UshkoviteHide

References for UshkoviteHide

Localities for UshkoviteHide

This 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.

Locality ListHide

- 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.
Argentina
 
  • Salta Province
    • La Poma Department
M. A. Galliski (1981)
M. A. Galliski (1981) +1 other reference
Canadian Mineralogist 40:929-937.
Australia
 
  • South Australia
    • Mt Lofty Ranges
      • North Mt Lofty Ranges
        • Kapunda
V. Peisley & P. Elliott in prep
    • Olary Province
      • Bimbowrie Conservation Park
        • Old Boolcoomata Station
          • White Rock Feldspar Mine
Kampf et al. (2018)
Brazil
 
  • Minas Gerais
    • Conselheiro Pena
      • Barra do Cuieté
Bermanec et al. (2011)
Scholz et al. (2014)
    • Divino das Laranjeiras
Reiner Mielke
In Coll. M. Slama
      • Sapucaia do Norte
SEM-EDS by Joy Desor
    • Itinga
 ...
      • Taquaral
        • Piauí valley
Luis Menezes +1 other reference
from my personal field trip
Canada
 
  • Yukon
    • Dawson mining district
Jewel Tunnel specimens
Japan
 
  • Hyogo Prefecture
    • Kobe city
      • Nishi-ku
Yamada (2004)
Ganko-Gakkai Koen-Yoshi (Abstracts of the Meetings of Japanese Association of Mineralogists...)
Namibia
 
  • Erongo Region
    • Dâures Constituency
von Bezing (2007)
Dunn (1985)
Russia (TL)
 
  • Chelyabinsk Oblast
    • Argayashsky District
      • Bol'shoi Tatkul' Lake
Pekov (1998)
Spain
 
  • Castile and Leon
    • Salamanca
      • Garcirrey
Calvo Rebollar et al. (2022)
USA
 
  • Maine
    • Oxford County
      • Newry
King et al. (1994) +1 other reference
  • New Hampshire
    • Grafton County
      • Groton
Rocks & Min. 80:251
NIZAMOFF et al. (2004)
Geological Society of America Abstracts ... +2 other references
    • Sullivan County
      • Newport
King (n.d.)
  • South Dakota
    • Custer County
      • Custer Mining District
        • Fourmile
Kampf et al. (2008)
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