Zincroselite Mineral Data

Zincroselite Mineral Data +

General Zincroselite Information

Chemical Formula:

Ca2Zn(AsO4)2·2(H2O)

Composition:

Molecular Weight = 459.41 gm

Calcium 17.45 % Ca 24.41 % CaO

Zinc 14.23 % Zn 17.72 % ZnO

Arsenic 32.62 % As 50.03 % As₂O₅

Hydrogen 0.88 % H 7.84 % H₂O

Oxygen 34.83 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₂Zn(AsO₄)₂·2(H₂O)

IMA Status:

Approved IMA 1986

Locality:

Link to MinDat.org Location Data.

Search for Zincroselite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Zincroselite Crystallography

Axial Ratios:

a:b:c =0.4524:1:0.4378

Cell Dimensions:

a = 5.832, b = 12.889, c = 5.644, Z = 2; beta = 107.72° V = 404.12 Den(Calc)= 3.78

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c

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

By Intensity(I/I_o): 3(1), 3.22(0.8), 5.1(0.6),

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

Keller P , Lissner F , Schleid T , European Journal of Mineralogy , 16 (2004) p.353-359, The crystal structures of zincroselite and gaitite: Two natural, polymorphs of Ca2Zn[AsO4]2*2H2O from Tsumeb, Namibia, Locality: Tsumeb, Namibia

Physical Properties of Zincroselite

Cleavage:

[???] Good

Color:

Colorless, White.

Density:

3.75

Diaphaniety:

Transparent

Hardness:

3 - Calcite

Streak:

white

Optical Properties of Zincroselite

Gladstone-Dale:

CI meas= -0.014 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.006 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1881,KPDmeas= 0.1896,KC= 0.187

Optical Data:

Biaxial (+), a=1.703, b=1.71, g=1.72, bire=0.0170, 2V(Calc)=82, 2V(Meas)=50-57.

Calculated Properties of Zincroselite

Electron Density:

r_electron=3.62 gm/cc
note: r_Zincroselite=3.78 gm/cc.

Fermion Index

Fermion Index = 0.00623
Boson Index = 0.99377

Photoelectric:

PE_Zincroselite= 31.40 barns/electron
U=PE_Zincroselite x r_electron= 113.69 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Zincroselite is Not Radioactive

Zincroselite Classification

Dana Class:

40.2.3.3 (40)Hydrated Phosphates, etc

(40.2)where A++ (B++)2 (XO4) · x(H2O)

(40.2.3)Roselite Subgroup (Monoclinic: P21/c)

40.2.3.1 Roselite Ca2(Co,Mg)(AsO4)2·2(H2O) P 2₁/c 2/m

40.2.3.2 Brandtite Ca2(Mn,Mg)(AsO4)2·2(H2O) P 2₁/c 2/m

40.2.3.3 Zincroselite Ca2Zn(AsO4)2·2(H2O) P 2₁/c 2/m

40.2.3.4 Wendwilsonite Ca2(Mg,Co)(AsO4)2·2(H2O) P 2₁/c 2/m

40.2.3.5 Manganlotharmeyerite! Ca(Mn,Mg,)2(AsO4)2(OH,H2O)2 C 2/m 2/m

Strunz Class:

VII/C.17-120 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.17 - Collinsite - Wendwilsonite series

VII/C.17-10 Collinsite Ca2(Mg,Fe)(PO4)2·2(H2O) P1 1

VII/C.17-15 Hillite! Ca2(Zn,Mg)[PO4]2·2(H2O) P1 1

VII/C.17-20 Messelite Ca2(Fe,Mn)(PO4)2·2(H2O) P1 1

VII/C.17-30 Fairfieldite Ca2(Mn,Fe)(PO4)2·2(H2O) P1 1

VII/C.17-40 Cassidyite Ca2(Ni,Mg)(PO4)2·2(H2O) P1 1

VII/C.17-50 Talmessite Ca2Mg(AsO4)2·2(H2O) P1 1

VII/C.17-60 Gaitite Ca2Zn(AsO4)2·2(H2O) P1 1

VII/C.17-70 Parabrandtite Ca2Mn(AsO4)·2(H2O) P1,P 1 Tri

VII/C.17-80 Roselite-beta Ca2(Co,Mg)(AsO4)2·2(H2O) P 1 or P1 Tri

VII/C.17-90 Wendwilsonite Ca2(Mg,Co)(AsO4)2·2(H2O) P 2₁/c 2/m

VII/C.17-100 Roselite Ca2(Co,Mg)(AsO4)2·2(H2O) P 2₁/c 2/m

VII/C.17-110 Brandtite Ca2(Mn,Mg)(AsO4)2·2(H2O) P 2₁/c 2/m

VII/C.17-120 Zincroselite Ca2Zn(AsO4)2·2(H2O) P 2₁/c 2/m

Other Zincroselite Information

References:

PHYS. PROP.(Am.Min.,Vol.73,p932,1988) OPTIC PROP.(Am.Min.,Vol.73,p932,1988)

See Also:

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

Search for Zincroselite using:

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

Visit our Advertisers for Zincroselite :
AA Mineral Specimens
A-Rocks Auction
Adams Minerals
B and L Minerals
Dakota Matrix
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
Minernet.it
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Zincroselite Mineral Data :

Ask about Zincroselite 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 Zincroselite Specimen Label here :

Zincroselite

Ca2Zn(AsO4)2·2(H2O)
Dana No: 40.2.3.3 Strunz No: VII/C.17-120
Locality:

Notes: