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Thometzekite

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About ThometzekiteHide

05284450014947998032499.jpg
W. Thometzek
Formula:
PbCu2+2(AsO4)2 · 2H2O
Colour:
Green, Bluish-green, olive-green
Lustre:
Waxy, Earthy
Hardness:
4 - 5
Crystal System:
Monoclinic
Name:
Named after Wilhelm Thometzek, Director of Mining at the Tsumcor Mine, Tsumeb from 1912 to 1922.
Tsumcorite Group.

Easily confused with gartrellite.
Compare also arsentsumebite.


Classification of ThometzekiteHide

Approved
Approval Year:
1982
8.CG.15

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
G : With large and medium-sized cations, RO4:H2O = 1:1
40.2.9.3

40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O
20.5.8

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

Physical Properties of ThometzekiteHide

Waxy, Earthy
Colour:
Green, Bluish-green, olive-green
Streak:
White
Hardness:
4 - 5 on Mohs scale

Optical Data of ThometzekiteHide

Type:
Biaxial (+)
RI values:
nα = 1.850 nβ = 1.870 nγ = 1.920
2V:
Measured: 70° , Calculated: 68°
Max Birefringence:
δ = 0.070
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
none

Chemical Properties of ThometzekiteHide

Formula:
PbCu2+2(AsO4)2 · 2H2O

Crystallography of ThometzekiteHide

Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
B2/m
Cell Parameters:
a = 9.077 Å, b = 6.3 Å, c = 7.661 Å
β = 116.99°
Ratio:
a:b:c = 1.441 : 1 : 1.216
Unit Cell V:
390.38 ų (Calculated from Unit Cell)
Z:
2
Morphology:
There is some uncertainty about whether this mineral is Tric. P-1 or P1, or Mon. C2/m. The best available data is presented above. A Tric. cell with a = 22.4, b = 22.44, c = 7.62, alpha = 70.2, beta = 70, gamma = 69.2, (no "Z" stated), has also been reported.

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
4.694 Å(8)
4.495 Å(5)
3.273 Å(10)
2.961 Å(7)
2.870 Å(7)
2.729 Å(6)
2.516 Å(7)

Type Occurrence of ThometzekiteHide

Synonyms of ThometzekiteHide

Other Language Names for ThometzekiteHide

Relationship of Thometzekite to other SpeciesHide

Other Members of this group:
CabalzariteCa(Mg,Al,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
CobaltlotharmeyeriteCa(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
CobalttsumcoritePb(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
FerrilotharmeyeriteCa(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
GartrellitePb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Tric. 1 : P1
HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2OTric.
KaliochalciteKCu2(SO4)2[(OH)(H2O)]Mon. 2/m : B2/m
KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
LukrahniteCa(Cu,Zn)(Fe3+,Zn)(AsO4)2 · 2(H2O,OH)Tric. 1 : P1
ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
MawbyitePb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon.
MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
NatrochalciteNaCu2(SO4)2(OH) · 2H2OMon. 2/m : B2/m
NickellotharmeyeriteCa(Ni,Fe3+,Co)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
Nickelschneebergite(Bi3+,Ca)(Ni,Co,Fe3+)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
NickeltsumcoritePb(Ni,Fe3+)2(AsO4)2(H2O,OH)2Mon. 2/m : B2/m
PhosphogartrellitePb(Cu,Fe3+)2(PO4,AsO4)2 · 2(H2O,OH)Tric.
RappolditePb(Co,Ni,Zn)2(AsO4)2 · 2H2OTric.
Schneebergite(Bi3+,Ca)(Co,Ni,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
TsumcoritePbZn2(AsO4)2 · 2H2OMon.
YancowinnaitePbCuAl(AsO4)2OH · H2O Tric. 1 : P1
ZincgartrellitePb(Zn,Fe3+,Cu)2(AsO4)2 · 2(H2O,OH)Tric. 1 : P1

Common AssociatesHide

Associated Minerals Based on Photo Data:
7 photos of Thometzekite associated with CarminitePbFe3+2(AsO4)2(OH)2
6 photos of Thometzekite associated with ScoroditeFe3+AsO4 · 2H2O
1 photo of Thometzekite associated with HidalgoitePbAl3(AsO4)(SO4)(OH)6
1 photo of Thometzekite associated with GypsumCaSO4 · 2H2O

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.15FerrilotharmeyeriteCa(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
8.CG.15LotharmeyeriteCa(Zn,Mn3+)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15MawbyitePb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon.
8.CG.15MounanaitePbFe3+2(VO4)2(OH,F)2Mon. 2/m : B2/m
8.CG.15TsumcoritePbZn2(AsO4)2 · 2H2OMon.
8.CG.15CobaltlotharmeyeriteCa(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15CabalzariteCa(Mg,Al,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
8.CG.15KrettnichitePbMn3+2(VO4)2(OH)2Mon. 2/m : B2/m
8.CG.15CobalttsumcoritePb(Co,Fe3+,Ni)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15NickellotharmeyeriteCa(Ni,Fe3+,Co)2(AsO4)2 · 2(H2O,OH)Mon. 2/m : B2/m
8.CG.15ManganlotharmeyeriteCaMn3+2(AsO4)2(OH)2Mon. 2/m : B2/m
8.CG.15Schneebergite(Bi3+,Ca)(Co,Ni,Fe3+)2(AsO4)2(OH,H2O)2Mon. 2/m : B2/m
8.CG.15Nickelschneebergite(Bi3+,Ca)(Ni,Co,Fe3+)2(AsO4)2 · 2(OH,H2O)Mon. 2/m : B2/m
8.CG.20GartrellitePb(Cu,Fe3+,Zn)2(AsO4,SO4)2 · 2(H2O,OH)Tric. 1 : P1
8.CG.20HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2OTric.
8.CG.20ZincgartrellitePb(Zn,Fe3+,Cu)2(AsO4)2 · 2(H2O,OH)Tric. 1 : P1
8.CG.20RappolditePb(Co,Ni,Zn)2(AsO4)2 · 2H2OTric.
8.CG.20PhosphogartrellitePb(Cu,Fe3+)2(PO4,AsO4)2 · 2(H2O,OH)Tric.
8.CG.20LukrahniteCa(Cu,Zn)(Fe3+,Zn)(AsO4)2 · 2(H2O,OH)Tric. 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.
40.2.9.2HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2OTric.
40.2.9.4MawbyitePb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon.

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
20.5.7HelmutwinkleritePb(Zn,Cu)2(AsO4)2 · 2H2OTric.
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.
20.5.16MawbyitePb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O)Mon.
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 ThometzekiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Schmetzer, K., Nuber, B. & Medenbach, O. (1985): Thometzekite, a new mineral from Tsumeb, Namibia, and symmetry relations in the tsumcorite-helmutwinklerite family. Neues Jahrbuch für Mineralogie, Monatshefte, 1985: 446-452.
American Mineralogist (1988): 73: 931.
European Journal of Mineralogy (1998): 10: 179-206.

Internet Links for ThometzekiteHide

Localities for ThometzekiteHide

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.
Czech Republic
 
  • Ústí nad Labem Region
    • Teplice District
No reference listed
Europe
 
  • Ore Mountains
Sejkora, J., Škoda, R., Škácha, P., Bureš, B. & Dvořák, Z. (2009): Nové mineralogické nálezy na Sn-W ložisku Cínovec v Krušných horách (Česká republika). Bulletin mineralogicko-petrologického oddělení Národního muzea v Praze 17 (2), 23-30 (in Czech with English abstract).
France
 
  • Auvergne-Rhône-Alpes
    • Allier
      • Ébreuil
        • Échassières
J.M. Boisson et al. : "Filon Sainte Barbe, Commune d'Echassières, Allier, France", Le Cahier des Micromonteurs, 2000, 4, 3-46
Germany
 
  • Baden-Württemberg
    • Freiburg
      • Lörrach
        • Todtnau
http://www.mineralienatlas.de/lexikon/index.php/Deutschland/Baden-W%FCrttemberg/Schwarzwald/Todtnau/Lisb%FChl
      • Ortenaukreis
        • Oberwolfach
KOLITSCH, U. (1997): Uranosphärit und weitere neue Mineralfunde von der Grube Clara im Schwarzwald. - Mineralien-Welt 8 (3), 18-26; WALENTA, K. (1995): Neue Mineralfunde von der Grube Clara. 6. Folge, 1. Teil. - Lapis 20 (5), 33-38; WALENTA, K. (2001): Thometzekit von der Grube Clara. Erzgräber, 15, 43-49.
  • North Rhine-Westphalia
    • Arnsberg
      • Siegen-Wittgenstein
        • Hilchenbach
          • Müsen
Der Aufschluss 2000(2), 71-123
  • Rhineland-Palatinate
    • Rhein-Lahn-Kreis
      • Bad Ems
        • Frücht
Möhn, G., Blaß, G., (2013): Lahnsteinit und weitere Neufunde aus dem Revier Bad Ems. Lapis 38(5), 38-40.
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.(1985) 446-452
Russia
 
  • Primorsky Krai
    • Dalnegorsk Urban District
[MinRec 32:8]
USA
 
  • Utah
    • Tooele Co.
      • Gold Hill Mining District (Clifton Mining District)
        • Gold Hill
          • Gold Hill Mine (Western Utah Mine)
Bill Wise talk at 2007 NCMA meeting.
Kokinos, M. and Wise, W.S. (1993), Famous Mineral Localities: the Gold Hill mine, Tooele County, Utah. Mineralogical Record: 24(1): 11-22.
 
Mineral and/or Locality  
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