Thometzekite Mineral Data

Thometzekite Mineral Data +

[Newest Minerals] [Rare Minerals] [Past Sale Items] [About Us] [A-Rocks Auctions]
T G Fine Minerals sells Australian Minerals from all the classic and current localities
We are one the most comprehensive sellers of these (Aussie) minerals in the world
Broken Hill specimens are our specialty along with fine worldwide minerals, Australian opals, fossils & gems

General Thometzekite Information

Chemical Formula:

Pb(Cu,Zn)2(AsO4)2·2(H2O)

Composition:

Molecular Weight = 649.08 gm

Zinc 5.04 % Zn 6.27 % ZnO

Copper 14.69 % Cu 18.38 % CuO

Arsenic 23.09 % As 35.41 % As₂O₅

Hydrogen 0.62 % H 5.55 % H₂O

Lead 31.92 % Pb 34.39 % PbO

Oxygen 24.65 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

PbCu_1.5Zn_0.5(AsO₄)₂·2(H₂O)

IMA Status:

Approved IMA 1985

Locality:

Link to MinDat.org Location Data.

Thometzekite Image

Images:

Thometzekite

Comments: Pale olive-green colored thometzekite crusts on quartz.
Location: Moldovo. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Thometzekite Crystallography

Axial Ratios:

a:b:c =1.4392:1:1.211

Cell Dimensions:

a = 9.112, b = 6.331, c = 7.667, Z = 2; beta = 116.74° V = 394.99 Den(Calc)= 5.46

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.688(1), 3.273(0.88), 2.865(0.7),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Krause W , Belendorff K , Bernhardt H J , McCammon C A , Effenberger H , Mikenda W , European Journal of Mineralogy , 10 (1998) p.179-206, Crystal chemistry of the tsumcorite-group minerals. New data on ferrilotharmeyerite,, tsumcorite, thometzekite, mounanaite, helmutwinklerite, and a redefinition of gartrellite

Physical Properties of Thometzekite

Color:

Bluish green, Green.

Hardness:

4-5 - Fluorite-Apatite

Luster:

Earthy (Dull)

Streak:

white

Optical Properties of Thometzekite

Gladstone-Dale:

CI calc= 0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1612,KC= 0.1631

Optical Data:

Biaxial (+), a=1.85, b=1.87, g=1.92, bire=0.0700, 2V(Calc)=68, 2V(Meas)=70.

Calculated Properties of Thometzekite

Electron Density:

r_electron=4.89 gm/cc
note: r_Thometzekite=5.46 gm/cc.

Fermion Index

Fermion Index = 0.07273
Boson Index = 0.92727

Photoelectric:

PE_Thometzekite= 573.77 barns/electron
U=PE_Thometzekite x r_electron=2,804.16 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Thometzekite is Not Radioactive

Thometzekite Classification

Dana Class:

40.2.9.3 (40)Hydrated Phosphates, etc

(40.2)where A++ (B++)2 (XO4) · x(H2O)

(40.2.9)Helmutwinklerite Subgroup

40.2.9.1 Tsumcorite PbZnFe(AsO4)2·(H2O) C 2/m 2/m

40.2.9.2 Helmutwinklerite PbZn2(AsO4)2·2(H2O) P1 1

40.2.9.3 Thometzekite Pb(Cu,Zn)2(AsO4)2·2(H2O) C 2/m 2/m

40.2.9.4 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m

40.2.9.5 Rappoldite! Pb(Co,Ni,Zn,)2(AsO4)2·2(H2O) P1 1

40.2.9.6 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m

40.2.9.7 Nickelschneebergite! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m

40.2.9.8 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m

Strunz Class:

VII/C.31-40 VII - Phosphates, Arsenates and Vanadates

VII/C - Water-bearing phosphates without unfamiliar anions, cations of medium and big size: Fe, Mn, Zn, Mg and Ca, (NH4)1+

VII/C.31 - Mawbyite - Gartrellite series

VII/C.31-02 Schneebergite! Bi(Co,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-04 Nickelschneebergite! Bi(Ni,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-05 Mawbyite Pb(FeZn)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-06 Cabalzarite! Ca(Mg,Al,Fe)2(AsO4)2(H2O,OH)2 C 2/m 2/m

VII/C.31-08 Nickellotharmeyerite! Ca(Ni,Fe,Co)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-10 Ferrilotharmeyerite Ca(Zn,Cu)(Fe,Zn)(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-20 Lotharmeyerite CaZnMn(AsO3OH)4(OH)3 C 2/m,C 2,Cm Mono

VII/C.31-30 Manganlotharmeyerite! Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-35 Cobaltlotharmeyerite! Ca(Co,Fe,Ni)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-36 Cobalttsumcorite! Pb(Co,Fe)2(AsO4)2(OH,H2O)2 C 2/m 2/m

VII/C.31-40 Thometzekite Pb(Cu,Zn)2(AsO4)2·2(H2O) C 2/m 2/m

VII/C.31-50 Tsumcorite PbZnFe(AsO4)2·(H2O) C 2/m 2/m

VII/C.31-74 Krettnichite! PbMn2(VO4)2(OH)2 C 2/m 2/m

VII/C.31-78 Lukrahnite! Ca(Cu,Zn)(Fe,Zn)(AsO4)2(OH,H2O)2 P1 1

VII/C.31-80 Phosphogartrellite! PbCuFe(PO4)2(OH,H2O)2 P1 1

VII/C.31-90 Gartrellite Pb(Cu,Fe)2(AsO4,SO4)2(CO3,H2O)0.7 P1,P 1 Tri

VII/C.31-92 Zincgartrellite! Pb(Zn,Fe,Cu)2(AsO4)2(OH,H2O)2 P1 1

VII/C.31-98 Rappoldite! Pb(Co,Ni,Zn,)2(AsO4)2·2(H2O) P1 1

VII/C.31-100 Helmutwinklerite PbZn2(AsO4)2·2(H2O) P1 1

Other Thometzekite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Thometzekite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

Search for Thometzekite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Thometzekite :
AA Mineral Specimens
B and L Minerals
Crystal Vaults
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Thometzekite Mineral Data :

Ask about Thometzekite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

Print or Cut-and-Paste your Thometzekite Specimen Label here :

Thometzekite

Pb(Cu,Zn)2(AsO4)2·2(H2O)
Dana No: 40.2.9.3 Strunz No: VII/C.31-40
Locality:

Notes: