Prosperite Mineral Data

Prosperite Mineral Data
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General Prosperite Information

Help on Chemical Formula: Chemical Formula: CaZn2(AsO4)2•(H2O)
Help on Composition: Composition: Molecular Weight = 466.71 gm
   Calcium    8.59 %  Ca   12.02 % CaO
   Zinc      28.02 %  Zn   34.88 % ZnO
   Arsenic   32.11 %  As   49.25 % As2O5
   Hydrogen   0.43 %  H     3.86 % H2O
   Oxygen    30.85 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaZn2(AsO4)2•(H2O)
Help on Environment: Environment: Secondary mineral in vugs in partly altered sulfide ore.
Help on IMA Status: IMA Status: Approved IMA 1979
Help on Locality: Locality: Tsumeb mine, Tsumeb, Namibia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Prosper J. Williams (1910-), South African-Canadian mineral dealer from Toronto, Canada.
Help on Name Pronunciation: Name Pronunciation: Prosperite + Pronunciation Say PROSPERITE
Help on Synonym: Synonym: ICSD 17034
  IMA1978-028
  PDF 33-599
 

Prosperite Image

Click Here for Larger Prosperite Image in a New Browser Window Images:
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Prosperite

Comments: B&W image of prosperite prisms.
Location: Tsumeb, South West Africa (Namibia). Scale: Crystal Length 5 mm.
© Canadian Mineralogist

Prosperite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =2.4884:1:1.263
Help on Cell Dimensions: Cell Dimensions: a = 19.238, b = 7.731, c = 9.765, Z = 8; beta = 104.47° V = 1,406.27 Den(Calc)= 4.41
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.723(1), 2.992(0.9), 3.11(0.8),
Click Here for Large Prosperite Structure Window Crystal Structure:

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Keller P , Riffel H , Hess H , Zeitschrift fur Kristallographie , 158 (1982) p.33-42, Die kristallstruktur von prosperit, Ca2Zn4[H2O|(AsO4)4], Locality: Tsumeb, Nambia

 

Physical Properties of Prosperite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, White.
Help on Density: Density: 4.31
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite)
Help on Habit: Habit: Wheat Sheaf - Bundle shaped aggregates resembling wheat sheafs after hand reaping wheat.
Help on Hardness: Hardness: 4.5 - Between Fluorite and Apatite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Silky
Help on Streak: Streak: white
 

Optical Properties of Prosperite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.171,KPDmeas= 0.1749,KC= 0.1732
Ncalc = 1.75 - 1.76
Help on Optical Data: Optical Data: Biaxial (+), a=1.746, b=1.748, g=1.768, bire=0.0220, 2V(Calc)=36, 2V(Meas)=34. Dispersion r > v.
 

Calculated Properties of Prosperite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=4.06 gm/cc
note: Specific Gravity of Prosperite =4.31 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEProsperite = 37.37 barns/electron
U=PEProsperite x rElectron Density= 151.87 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Prosperite is Not Radioactive
 

Prosperite Classification
Help on Dana Class: Dana Class: 40.02.04.01 (40)Hydrated Phosphates, etc
  (40.02)where A++ (B++)2 (XO4) · x(H2O)
  (40.02.04)Dana Group
 
40.02.04.01 Prosperite CaZn2(AsO4)2•(H2O) C 2/c 2/m
Help on Strunz Class: Strunz Class: 08.CA.60 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CA -With small and large/medium cations
 
08.CA.60 Prosperite CaZn2(AsO4)2•(H2O) C 2/c 2/m
 

Other Prosperite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Prosperite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Ask about Prosperite here :
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Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Espaņol

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

Prosperite

CaZn2(AsO4)2•(H2O)
Dana No: 40.02.04.01 Strunz No: 08.CA.60
Locality:

 

Notes: