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Helmutwinklerite

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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:
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.

Classification of HelmutwinkleriteHide

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 HelmutwinkleriteHide

Vitreous, Resinous
Colour:
Colourless to sky blue
Streak:
White
Hardness:
4½ on Mohs scale

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° , 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 HelmutwinkleriteHide

Formula:
PbZn2(AsO4)2 · 2H2O

Zn may be replaced by minor Cu.
Common Impurities:
Cu

Crystallography of HelmutwinkleriteHide

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 V:
204.27 ų (Calculated from Unit Cell)

Type Occurrence of HelmutwinkleriteHide

Synonyms of HelmutwinkleriteHide

Other Language Names for HelmutwinkleriteHide

Relationship of Helmutwinklerite to other SpeciesHide

Other Members of this group:
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.
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.
RappolditePbCo2(AsO4)2 · 2H2OTric.
SchneebergiteBiCo2(AsO4)2(OH) · H2OMon. 2/m : B2/m
ThometzekitePbCu2+2(AsO4)2 · 2H2OMon. 2/m : B2/m
TsumcoritePbZn2(AsO4)2 · 2H2OMon.
YancowinnaitePbCuAl(AsO4)2OH · H2O Tric. 1 : P1
ZincgartrellitePbZn2(AsO4)2(H2O,OH)2Tric. 1 : P1

Related Minerals - Nickel-Strunz GroupingHide

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.
8.CG.05β-RoseliteCa2Co(AsO4)2 · 2H2OTric.
8.CG.05TalmessiteCa2Mg(AsO4)2 · 2H2OTric.
8.CG.05HilliteCa2(Zn,Mg)(PO4)2 · 2 H2OTric. 1 : P1
8.CG.10BrandtiteCa2Mn2+(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10RoseliteCa2(Co2+,Mg)(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10WendwilsoniteCa2Mg(AsO4)2 · 2H2OMon. 2/m : P21/b
8.CG.10ZincroseliteCa2Zn(AsO4)2 · 2H2OMon.
8.CG.10RruffiteCa2Cu(AsO4)2 · 2H2OMon. 2/m : P21/b
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.
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.
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.20GartrellitePbCuFe3+(AsO4)2(OH) · H2OTric. 1 : P1
8.CG.20ZincgartrellitePbZn2(AsO4)2(H2O,OH)2Tric. 1 : P1
8.CG.20RappolditePbCo2(AsO4)2 · 2H2OTric.
8.CG.20PhosphogartrellitePbCuFe3+(PO4)2(OH,H2O)2Tric.
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.35NickeltalmessiteCa2Ni(AsO4)2 · 2H2OTric. 1 : P1

Related Minerals - Dana Grouping (8th Ed.)Hide

40.2.9.1TsumcoritePbZn2(AsO4)2 · 2H2OMon.
40.2.9.3ThometzekitePbCu2+2(AsO4)2 · 2H2OMon. 2/m : B2/m
40.2.9.4MawbyitePbFe3+2(AsO4)2(OH)2Mon.

Related Minerals - Hey's Chemical Index of Minerals GroupingHide

20.5.1CafarsiteCa5.9Mn1.7Fe3Ti3(AsO3)12 · 4-5H2OIso. m3 (2/m 3) : Pn3
20.5.2SchultenitePb(HAsO4)Mon. 2/m : P2/b
20.5.3DuftitePbCu(AsO4)(OH)Orth. 2 2 2 : P21 21 21
20.5.4BayldonitePbCu3(AsO4)2(OH)2Mon. 2/m : B2/b
20.5.5PhilipsbornitePbAl3(AsO4)(AsO3OH)(OH)6Trig.
20.5.6ArsendescloizitePbZn(AsO4)(OH)Orth. 2 2 2 : P21 21 21
20.5.8ThometzekitePbCu2+2(AsO4)2 · 2H2OMon. 2/m : B2/m
20.5.9Caryinite(Na,Pb)(Ca,Na)CaMn2+2(AsO4)3Mon. 2/m
20.5.10LudlockitePbFe3+4As3+10O22Tric. 1 : P1
20.5.11GabrielsonitePbFe3+(As3+O3)OOrth. mm2 : Pmc21
20.5.12CarminitePbFe3+2(AsO4)2(OH)2Orth. mmm (2/m 2/m 2/m) : Cccm
20.5.13SegnititePbFe3+3AsO4(AsO3OH)(OH)6Trig. 3m (3 2/m) : R3m
20.5.14TsumcoritePbZn2(AsO4)2 · 2H2OMon.
20.5.15JamesitePb2Zn(Fe2+,Zn)2Fe3+4(AsO4)4(OH)10Tric.
20.5.16MawbyitePbFe3+2(AsO4)2(OH)2Mon.
20.5.17ArsenbrackenbuschitePb2Fe3+(AsO4)2(OH)

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.

References for HelmutwinkleriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
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 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 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 (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
France
 
  • Provence-Alpes-Côte d'Azur
    • Var
      • Le Pradet
http://www.mine-capgaronne.fr/site/Mineraux/ListeMineraux.html
Greece
 
  • Attica
    • East Attica
      • Lavreotiki
        • 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)
 
  • Oshikoto Region
    • Tsumeb
Neues Jahrb.Min.,Mh.(1980) 118-124
 
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