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Helmutwinklerite

A valid IMA mineral species
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02569620017055981299871.jpg
Helmutwinklerite

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
01949600014967183262391.jpg
Helmutwinklerite

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
04824160015728050023850.jpg
Helmutwinklerite, etc.

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
02569620017055981299871.jpg
Helmutwinklerite

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
04611690014965065564427.jpg
Helmutwinklerite

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
06296120015728049733057.jpg
Helmutwinklerite, etc.

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
02569620017055981299871.jpg
Helmutwinklerite

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
01949600014967183262391.jpg
Helmutwinklerite

Tsumeb Mine, Tsumeb, Oshikoto Region, Namibia
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About HelmutwinkleriteHide

07200380015083207772011.jpg
Helmut G. F. Winkler
Formula:
PbZn2(AsO4)2 · 2H2O
Zn may be replaced by minor Cu.
Colour:
Colourless to sky blue
Lustre:
Vitreous, Resinous
Hardness:
4½
Specific Gravity:
5.3
Crystal System:
Triclinic
Name:
Named in honor of Helmut Gustav Franz Winkler (3 April 1915, Kiel, Germany - 10 November 1980, Göttingen, Germany), crystallographer and experimental petrologist. He worked at different times as Director of the Institute of Crystal­lography, University of Göttingen and as the Director of the Mineralogical Institute, Philipps-Universität Marburg. He wrote the famous book "Petrogenesis of Metamorphic Rocks" and received many honors.
Tsumcorite Group.


Unique IdentifiersHide

Mindat ID:
1854
Long-form identifier:
mindat:1:1:1854:4
GUID
(UUID V4):
7075816b-9cde-4537-b501-3e1f928c425d

IMA Classification of HelmutwinkleriteHide

Classification of HelmutwinkleriteHide

Strunz-mindat (2024):
8.CG.20

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
G : With large and medium-sized cations, RO4:H2O = 1:1
Dana 7th ed.:
40.2.9.2
Dana 8th ed.:
40.2.9.2

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O
Hey's CIM Ref.:
20.5.7

20 : Arsenates (also arsenates with phosphate, but without other anions)
5 : Arsenates of Ti and Pb

Mineral SymbolsHide

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

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

Physical Properties of HelmutwinkleriteHide

Lustre:
Vitreous, Resinous
Transparency:
Transparent, Translucent
Colour:
Colourless to sky blue
Streak:
White
Hardness:
4½ on Mohs scale
Cleavage:
None Observed
Fracture:
Conchoidal
Density:
5.3(1) g/cm3 (Measured)    5.25(4) g/cm3 (Calculated)

Optical Data of HelmutwinkleriteHide

Type:
Biaxial (+)
RI values:
nα = 1.720 - 1.830 nβ = 1.800 - 1.870 nγ = 1.890 - 1.980
2V:
Measured: 70° (5), Calculated: 66° to 88°
Max Birefringence:
δ = 0.170
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r < v medium

Chemistry of HelmutwinkleriteHide

Mindat Formula:
PbZn2(AsO4)2 · 2H2O

Zn may be replaced by minor Cu.
Elements listed:
As, H, O, Pb, Zn - search for minerals with similar chemistry
Common Impurities:
Cu

Crystallography of HelmutwinkleriteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 5.610 Å, b = 7.617 Å, c = 5.606 Å
α = 70.19°, β = 69.91°, γ = 69.18°
Ratio:
a:b:c = 0.737 : 1 : 0.736
Unit Cell V:
203.77 ų (Calculated from Unit Cell)
Z:
1
Comment:
pseudomonoclinic

Crystal StructureHide

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IDSpeciesReferenceLinkYearLocalityPressure (GPa)Temp (K)
0006712HelmutwinkleriteKrause W, Belendorff K, Bernhardt H J, McCammon C A, Effenberger H, Mikenda W (1998) Crystal chemistry of the tsumcorite-group minerals. New data on ferrilotharmeyerite, tsumcorite, thometzekite, mounanaite, helmutwinklerite, and a redefinition of gartrellite European Journal of Mineralogy 10 179-2061998Tsumeb mine, Namibia0293
CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
2.579 Å(100)
4.697 Å(80)
3.075 Å(75)
3.269 Å(70)
2.768 Å(50)
1.735 Å(50)
6.953 Å(40)

Geological EnvironmentHide

Type Occurrence of HelmutwinkleriteHide

Type Locality:
ⓘ Tsumeb Mine (Ongopolo Mine), Tsumeb, Oshikoto Region, Namibia
Place of Conservation of Type Material:
Gottingen University, Gottingen, Germany
Associated Minerals at Type Locality:
Tennantite SubgroupWillemiteQuartz
Reference:
Süsse, P., Schnorrer-Köhler, G. (1983) Helmutwinklerite, a new arsenate mineral from Tsumeb, S.W. Africa. Neues Jahrbuch für Mineralogie, Monatshefte: 1980: 118-124.

Synonyms of HelmutwinkleriteHide

Other Language Names for HelmutwinkleriteHide

Relationship of Helmutwinklerite to other SpeciesHide

Member of:
Tsumcorite Group
Other Members of this group:
AlumolukrahniteCa[CuAl](AsO4)2(H2O,OH)2Tric. 1 : P1
CabalzariteCaMg2(AsO4)2 · 2H2OMon. 2/m : B2/m
CobaltlotharmeyeriteCaCo2(AsO4)2 · 2H2OMon. 2/m : B2/m
CobalttsumcoritePbCo2(AsO4)2 · 2H2OMon. 2/m : B2/m
FerrilotharmeyeriteCaZnFe3+(AsO4)2(OH) · H2OMon. 2/m : B2/m
GartrellitePbCuFe3+(AsO4)2(OH) · H2OTric. 1 : P1
KaliochalciteKCu2(SO4)2[(OH)(H2O)]Mon. 2/m : B2/m
KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
LotharmeyeriteCaZn2(AsO4)2 · 2H2OMon. 2/m : B2/m
LukrahniteCaCuFe3+(AsO4)2(OH,H2O)2Tric. 1 : P1
ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
MawbyitePbFe3+2(AsO4)2(OH)2Mon. 2/m : B2/m
MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
NatrochalciteNaCu2(SO4)2(OH) · 2H2OMon. 2/m : B2/m
NickellotharmeyeriteCaNi2(AsO4)2 · 2H2OMon. 2/m : B2/m
NickelschneebergiteBiNi2(AsO4)2(OH) · H2OMon. 2/m : B2/m
NickeltsumcoritePb(Ni,Fe3+)2(AsO4)2(H2O,OH)2Mon. 2/m : B2/m
PhosphogartrellitePbCuFe3+(PO4)2(OH,H2O)2Tric. 1 : P1
RappolditePbCo2(AsO4)2 · 2H2OTric. 1 : P1
SchneebergiteBiCo2(AsO4)2(OH) · H2OMon. 2/m : B2/m
ThometzekitePbCu2+2(AsO4)2 · 2H2OMon. 2/m : B2/m
TsumcoritePbZn2(AsO4)2 · 2H2OMon. 2/m : B2/m
YancowinnaitePbCuAl(AsO4)2OH · H2O Tric. 1 : P1
ZincgartrellitePbZn2(AsO4)2(H2O,OH)2Tric. 1 : P1

Common AssociatesHide

Associated Minerals Based on Photo Data:
4 photos of Helmutwinklerite associated with AnglesitePbSO4
4 photos of Helmutwinklerite associated with Tennantite SubgroupCu6(Cu4C2+2)As4S12S
3 photos of Helmutwinklerite associated with EnargiteCu3AsS4
3 photos of Helmutwinklerite associated with GermaniteCu13Fe2Ge2S16

Related Minerals - Strunz-mindat GroupingHide

8.CG.Ca-HuréauliteCaMn5(PO4)4 · 4H2O
8.CG.FluckiteCaMn2+(AsO3OH)2 · 2H2OTric. 1 : P1
8.CG.DondoelliteCa2Fe(PO4)2 · 2H2OTric. 1 : P1
8.CG.AlumolukrahniteCa[CuAl](AsO4)2(H2O,OH)2Tric. 1 : P1
8.CG.05CassidyiteCa2Ni(PO4)2 · 2H2OTric.
8.CG.05CollinsiteCa2Mg(PO4)2 · 2H2OTric. 1 : P1
8.CG.05FairfielditeCa2Mn2+(PO4)2 · 2H2OTric. 1 : P1
8.CG.05GaititeCa2Zn(AsO4)2 · 2H2OTric. 1 : P1
8.CG.05MesseliteCa2Fe2+(PO4)2 · 2H2OTric. 1 : P1
8.CG.05ParabrandtiteCa2Mn2+(AsO4)2 · 2H2OTric. 1 : P1
8.CG.05AnorthoroseliteCa2Co(AsO4)2 · 2H2OTric.
8.CG.05TalmessiteCa2Mg(AsO4)2 · 2H2OTric. 1 : P1
8.CG.05HilliteCa2Zn(PO4)2 · 2H2OTric. 1 : P1
8.CG.05Unnamed (Fe2+-analogue of Parabrandtite)Ca2Fe2+(AsO4)2 · 2H2O
8.CG.10BrandtiteCa2Mn2+(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10RoseliteCa2Co(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10WendwilsoniteCa2Mg(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10ZincroseliteCa2Zn(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10RruffiteCa2Cu(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10Unnamed (Fe2+-analogue of Brandtite)Ca2Fe2+(AsO4)2 · 2H2O
8.CG.15FerrilotharmeyeriteCaZnFe3+(AsO4)2(OH) · H2OMon. 2/m : B2/m
8.CG.15LotharmeyeriteCaZn2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15MawbyitePbFe3+2(AsO4)2(OH)2Mon. 2/m : B2/m
8.CG.15MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
8.CG.15ThometzekitePbCu2+2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15TsumcoritePbZn2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15CobaltlotharmeyeriteCaCo2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15CabalzariteCaMg2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
8.CG.15CobalttsumcoritePbCo2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15NickellotharmeyeriteCaNi2(AsO4)2 · 2H2OMon. 2/m : B2/m
8.CG.15ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
8.CG.15SchneebergiteBiCo2(AsO4)2(OH) · H2OMon. 2/m : B2/m
8.CG.15NickelschneebergiteBiNi2(AsO4)2(OH) · H2OMon. 2/m : B2/m
8.CG.15YancowinnaitePbCuAl(AsO4)2OH · H2O Tric. 1 : P1
8.CG.15NickeltsumcoritePb(Ni,Fe3+)2(AsO4)2(H2O,OH)2Mon. 2/m : B2/m
8.CG.15MagnesiofluckiteCaMg(AsO3OH)2(H2O)2Tric. 1 : P1
8.CG.20GartrellitePbCuFe3+(AsO4)2(OH) · H2OTric. 1 : P1
8.CG.20ZincgartrellitePbZn2(AsO4)2(H2O,OH)2Tric. 1 : P1
8.CG.20RappolditePbCo2(AsO4)2 · 2H2OTric. 1 : P1
8.CG.20PhosphogartrellitePbCuFe3+(PO4)2(OH,H2O)2Tric. 1 : P1
8.CG.20LukrahniteCaCuFe3+(AsO4)2(OH,H2O)2Tric. 1 : P1
8.CG.25Pottsite(Pb3xBi4-2x)(VO4)4 · H2O (0.8 < x < 1.0)Tet. 4/m : I41/a
8.CG.25Armellinoite-(Ce)Ca4Ce4+(AsO4)4 · H2OTet. 4/m : I41/a
8.CG.35NickeltalmessiteCa2Ni(AsO4)2 · 2H2OTric. 1 : P1
8.CG.55IrhtemiteCa4Mg(AsO4)2(HAsO4)2 · 4H2OMon.

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 HelmutwinkleriteHide

References for HelmutwinkleriteHide

Localities for HelmutwinkleriteHide

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.
France
 
  • Provence-Alpes-Côte d'Azur
    • Var
      • Toulon
        • Le Pradet
www.mine-capgaronne.fr (2003)
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • Lavrion mining district
          • Agios Konstantinos (Kamariza)
            • Mercati mines
Rieck (1999)
Namibia (TL)
 
  • Oshikoto Region
    • Tsumeb
Süsse et al. (1983)
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