Parahopeite Mineral Data

Parahopeite Mineral Data
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General Parahopeite Information

Help on Chemical Formula: Chemical Formula: Zn3(PO4)2•4(H2O)
Help on Composition: Composition: Molecular Weight = 458.17 gm
   Zinc        42.82 %  Zn   53.29 % ZnO
   Phosphorus  13.52 %  P    30.98 % P2O5
   Hydrogen     1.76 %  H    15.73 % H2O
   Oxygen      41.90 %  O
              ______        ______ 
              100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Zn3(PO4)2•4(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1908
Help on Locality: Locality: Kabwe (Broken Hill), Central province, Zambia Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for it's dimorphic relationship to hopeite.
Help on Name Pronunciation: Name Pronunciation: Parahopeite + Pronunciation Say PARAHOPEITE
Help on Synonym: Synonym: ICSD 16979
  PDF 39-1352
 

Parahopeite Image

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Parahopeite

Comments: Transparent, prismatic parahopeite crystals with keckite.
Location: Hagendorf, Bavaria, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Parahopeite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.7625:1:0.6993
Help on Cell Dimensions: Cell Dimensions: a = 5.755, b = 7.547, c = 5.278, Z = 1; alpha = 93.35°, beta = 91.18°, gamma = 91.42° V = 228.73 Den(Calc)= 3.33
Help on Crystal System: Crystal System: Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 7.56(1), 2.99(0.9), 4.48(0.7),
Help on Forms: Forms:

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Forms: ( 1 1 1) ( 0 1 1) ( 0 1 0) ( 3 2 2) ( 1 1 1) ( 1 1 0) ( 0 1 1) ( 1 0 0) ( 0 0 1)

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Chao G Y , Zeitschrift fur Kristallographie , 130 (1969) p.261-266, Refinement of the crystal structure of parahopeite

 

Physical Properties of Parahopeite

Help on Cleavage: Cleavage: {???} Distinct
Help on Color: Color: Colorless.
Help on Density: Density: 3.3
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Striated - Parallel lines on crystal surface or cleavage face.
Help on Hardness: Hardness: 3.5 - Copper Penny
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Pearly
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Parahopeite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.025 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.034 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1878,KPDmeas= 0.1895,KC= 0.1944
Ncalc = 1.64 - 1.65
Help on Optical Data: Optical Data: Biaxial (+), a=1.614, b=1.625, g=1.637, bire=0.0230
 

Calculated Properties of Parahopeite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.23 gm/cc
note: Specific Gravity of Parahopeite =3.30 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEParahopeite = 21.64 barns/electron
U=PEParahopeite x rElectron Density= 69.82 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Parahopeite is Not Radioactive
 

Parahopeite Classification
Help on Dana Class: Dana Class: 40.03.03.01 (40)Hydrated Phosphates, etc
  (40.03)where (A++)3 (XO4)2 · x(H2O)
  (40.03.03)Dana Group
 
40.03.03.01 Parahopeite Zn3(PO4)2•4(H2O) P1 1
Help on Strunz Class: Strunz Class: 08.CA.70 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CA -With small and large/medium cations
 
08.CA.70 Parahopeite Zn3(PO4)2•4(H2O) P1 1
 

Other Parahopeite 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 Parahopeite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineralienatlas (Deutsch)
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Parahopeite

Zn3(PO4)2•4(H2O)
Dana No: 40.03.03.01 Strunz No: 08.CA.70
Locality:

 

Notes: