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Helmutwinklerite

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Formula:
PbZn2(AsO4)2 · 2H2O
System:
Triclinic
Colour:
Colourless to sky blue
Lustre:
Vitreous, Resinous
Hardness:

Classification of Helmutwinklerite

Approved
Approval Year:
1979
7/C.31-100
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
40.2.9.2

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O
20.5.7

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

Physical Properties of Helmutwinklerite

Vitreous, Resinous
Colour:
Colourless to sky blue
Streak:
White
Hardness (Mohs):

Optical Data of Helmutwinklerite

Type:
Biaxial (+)
RI values:
nα = 1.720 - 1.830 nβ = 1.800 - 1.870 nγ = 1.890 - 1.980
2V:
Measured: 70° , 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

Chemical Properties of Helmutwinklerite

IMA Formula:
PbZn2(AsO4)2 · 2H2O
Elements listed in formula:

Crystallography of Helmutwinklerite

Crystal System:
Triclinic
Cell Parameters:
a = 5.63 Å, b = 7.76 Å, c = 5.6 Å
α = 94.7°, β = 110.7°, γ = 112.7°
Ratio:
a:b:c = 0.726 : 1 : 0.722
Unit Cell Volume:
V 204.27 ų (Calculated from Unit Cell)

Type Occurrence of Helmutwinklerite

Relationship of Helmutwinklerite to other Species

Other Members of Group:
CabalzariteCa(Mg,Al,Fe3+)2(AsO4)2(OH,H2O)2
CobaltlotharmeyeriteCa(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)
CobalttsumcoritePb(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)
FerrilotharmeyeriteCa(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)
GartrellitePb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)
KaliochalciteKCu2(SO4)2[(OH)(H2O)]
KrettnichitePbMn23+(VO4)2(OH)2
LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)
LukrahniteCa(Cu,Zn)(Fe3+,Zn)(AsO4)2 · 2(H2O,OH)
ManganlotharmeyeriteCaMn23+(AsO4)2(OH)2
MawbyitePb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)
MounanaitePbFe23+(VO4)2(OH,F)2
NatrochalciteNaCu2(SO4)2(OH) · 2H2O
Nickelschneebergite(Bi3+,Ca)(Ni,Co,Fe3+)2(AsO4)2 · 2(OH,H2O)
NickeltsumcoritePb(Ni,Fe3+)2(AsO4)2(H2O,OH)2
PhosphogartrellitePb(Cu,Fe3+)2(PO4,AsO4)2 · 2(H2O,OH)
RappolditePb(Co,Ni,Zn)2(AsO4)2 · 2H2O
Schneebergite(Bi3+,Ca)(Co,Ni,Fe3+)2(AsO4)2(OH,H2O)2
ThometzekitePb(Cu,Zn)2(AsO4,SO4)2 · 2(H2O,OH)
TsumcoritePbZn2(AsO4)2 · 2H2O
YancowinnaitePbCuAl(AsO4)2OH · H2O
ZincgartrellitePb(Zn,Fe3+,Cu)2(AsO4)2 · 2(H2O,OH)
8.CG.05CassidyiteCa2Ni(PO4)2 · 2H2O
8.CG.05CollinsiteCa2Mg(PO4)2 · 2H2O
8.CG.05FairfielditeCa2Mn2+(PO4)2 · 2H2O
8.CG.05GaititeCa2Zn(AsO4)2 · 2H2O
8.CG.05MesseliteCa2Fe2+(PO4)2 · 2H2O
8.CG.05ParabrandtiteCa2Mn2+(AsO4)2 · 2H2O
8.CG.05β-RoseliteCa2Co(AsO4)2 · 2H2O
8.CG.05TalmessiteCa2Mg(AsO4)2 · 2H2O
8.CG.05HilliteCa2Zn(PO4)2 · 2H2O
8.CG.10BrandtiteCa2Mn2+(AsO4)2 · 2H2O
8.CG.10RoseliteCa2Co(AsO4)2 · 2H2O
8.CG.10WendwilsoniteCa2Mg(AsO4)2 · 2H2O
8.CG.10ZincroseliteCa2Zn(AsO4)2 · 2H2O
8.CG.10RruffiteCa2Cu(AsO4)2 · 2H2O
8.CG.15FerrilotharmeyeriteCaZnFe3+(AsO4)2(OH) · H2O
8.CG.15LotharmeyeriteCaZn2(AsO4)2 · 2H2O
8.CG.15MawbyitePbFe23+(AsO4)2(OH)2
8.CG.15MounanaitePbFe23+(VO4)2(OH)2
8.CG.15ThometzekitePbCu22+(AsO4)2 · 2H2O
8.CG.15TsumcoritePbZn2(AsO4)2 · 2H2O
8.CG.15CobaltlotharmeyeriteCaCo2(AsO4)2 · 2H2O
8.CG.15CabalzariteCaMg2(AsO4)2 · 2H2O
8.CG.15KrettnichitePbMn23+(VO4)2(OH)2
8.CG.15CobalttsumcoritePbCo2(AsO4)2 · 2H2O
8.CG.15NickellotharmeyeriteCaNi2(AsO4)2 · 2H2O
8.CG.15ManganlotharmeyeriteCaMn23+(AsO4)2(OH)2
8.CG.15SchneebergiteBiCo2(AsO4)2(OH) · H2O
8.CG.15NickelschneebergiteBiNi2(AsO4)2(OH) · H2O
8.CG.20GartrellitePbCuFe3+(AsO4)2(OH) · H2O
8.CG.20ZincgartrellitePbZn2(AsO4)2(H2O,OH)2
8.CG.20RappolditePbCo2(AsO4)2 · 2H2O
8.CG.20PhosphogartrellitePbCuFe3+(PO4)2(OH,H2O)2
8.CG.20LukrahniteCa(Cu,Zn)(Fe3+,Zn)(AsO4)2(OH,H2O)2
8.CG.25Pottsite(Pb3Bi)Bi(VO4)4 · H2O
8.CG.35NickeltalmessiteCa2Ni(AsO4)2 · 2H2O
20.5.1CafarsiteCa5.9Mn1.7Fe3Ti3(AsO3)12 · 4-5H2O
20.5.2SchultenitePb(AsO3OH)
20.5.3DuftitePbCuAsO4(OH)
20.5.4BayldoniteCu3PbO(AsO3OH)2(OH)2
20.5.5PhilipsbornitePbAl3(AsO4)(AsO3OH)(OH)6
20.5.6ArsendescloizitePbZnAsO4(OH)
20.5.8ThometzekitePbCu22+(AsO4)2 · 2H2O
20.5.9Caryinite(Na,Pb)(Ca,Na)CaMn22+(AsO4)3
20.5.10LudlockitePbFe43+As103+O22
20.5.11GabrielsonitePbFeAsO4(OH)
20.5.12CarminitePbFe23+(AsO4)2(OH)2
20.5.13SegnititePbFe33+AsO4(AsO3OH)(OH)6
20.5.14TsumcoritePbZn2(AsO4)2 · 2H2O
20.5.15JamesitePb2ZnFe23+(Fe3+,Zn)4(AsO4)4(OH)8(OH,O)2
20.5.16MawbyitePbFe23+(AsO4)2(OH)2
20.5.17ArsenbrackenbuschitePb2Fe3+(AsO4)2(OH)
40.2.9.1TsumcoritePbZn2(AsO4)2 · 2H2O

Other Names for Helmutwinklerite

Name in Other Languages:

Other Information

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

References for Helmutwinklerite

Reference List:
Süsse, P. & Schnorrer-Köhler, G. (1983): Helmutwinklerite, a new arsenate mineral from Tsumeb, S.W. Africa. Neues Jahrbuch für Mineralogie, Monatshefte (1980), 118-124.

American Mineralogist: 65: 1067.

Internet Links for Helmutwinklerite

mindat.org URL:
https://www.mindat.org/min-1854.html
Please feel free to link to this page.

Localities for Helmutwinklerite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? 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.
France
 
  • Provence-Alpes-Côte d'Azur
    • Var
      • Le Pradet
http://www.mine-capgaronne.fr/site/Mineraux/ListeMineraux.html
Greece
 
  • Attikí Prefecture (Attica; Attika)
    • Lavrion District (Laurion; Laurium)
      • Lavrion District Mines
        • Agios Konstantinos [St Constantine] (Kamariza)
          • Kamariza Mines (Kamareza Mines)
No reference listed
Lapis No.7/8 1999 p.70-74
Namibia (TL)
 
  • Otjikoto Region (Oshikoto)
    • Tsumeb
Neues Jahrb.Min.,Mh.(1980) 118-124
Mineral and/or Locality  
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