Guerinite Mineral Data

Guerinite Mineral Data
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General Guerinite Information

Help on Chemical Formula: Chemical Formula: Ca5(AsO3OH)2(AsO4)2•9(H2O)
Help on Composition: Composition: Molecular Weight = 920.22 gm
   Calcium   21.78 %  Ca   30.47 % CaO
   Arsenic   32.57 %  As   49.95 % As2O5
   Hydrogen   2.19 %  H    19.58 % H2O
   Oxygen    43.47 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca5(AsO3OH)2(AsO4)2•9(H2O)
Help on IMA Status: IMA Status: Approved IMA 1961
Help on Locality: Locality: Daniel mine, Schneeberg, Sachsen, (Saxony), Germany Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for H. Guerin.
Help on Name Pronunciation: Name Pronunciation: Guerinite + Pronunciation Say GUERINITE
Help on Synonym: Synonym: ICSD 2127
  PDF 26-1055
 

Guerinite Image

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Guerinite

Comments: White blebs of guerinite on erythrite.
Location: Wechsel Schacht, Richelsdorf, Hesse, Germany. Scale: Not Given.
© Lou Perloff / Photo Atlas of Minerals

Guerinite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =2.618:1:3.4852
Help on Cell Dimensions: Cell Dimensions: a = 17.63, b = 6.734, c = 23.47, Z = 5; beta = 90.6° V = 2,786.22 Den(Calc)= 2.74
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 14(1), 3.01(0.8), 3.89(0.8),
Click Here for Large Guerinite Structure Window Crystal Structure:

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Catti M , Ferraris G , Acta Crystallographica, Section B , 30 (1974) p.1789-1794, Crystal structure of Ca5(HAsO4)2(AsO4)2*9H2O (guerinite), Locality: synthetic

 

Physical Properties of Guerinite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: Colorless, White.
Help on Density: Density: 2.68
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 1.5 - Between Talc and Gypsum
Help on Luminescence: Luminescence: Fluorescent, Short UV=white, Long UV=white.
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white
 

Optical Properties of Guerinite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.025 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2119,KPDmeas= 0.2167,KC= 0.2115
Ncalc = 1.57 - 1.58
Help on Optical Data: Optical Data: Biaxial (-), a=1.576, b=1.582, g=1.584, bire=0.0080
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Guerinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.69 gm/cc
note: Specific Gravity of Guerinite =2.74 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.000505904
Boson Index = 0.999494096
Help on Photoelectric: Photoelectric: PEGuerinite = 24.25 barns/electron
U=PEGuerinite x rElectron Density= 65.27 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Guerinite is Not Radioactive
 

Guerinite Classification
Help on Dana Class: Dana Class: 39.02.02.02 (39)Hydrated Acid Phosphates, etc
  (39.02)H2 (AB)5 (XO4)4 · x(H2O)
  (39.02.02)Dana Group
 
39.02.02.01 Vladimirite Ca5(AsO3OH)2(AsO4)2•5(H2O) P 21/c 2/m
 
39.02.02.02 Guerinite Ca5(AsO3OH)2(AsO4)2•9(H2O) P 21/n 2/m
Help on Strunz Class: Strunz Class: 08.CJ.75 08 - PHOSPHATES, ARSENATES, VANADATES
  08.C - Phosphates without Additional Anions, with H2O
  08.CJ -With only large cations
 
08.CJ.75 Guerinite Ca5(AsO3OH)2(AsO4)2•9(H2O) P 21/n 2/m
 

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

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

Guerinite

Ca5(AsO3OH)2(AsO4)2•9(H2O)
Dana No: 39.02.02.02 Strunz No: 08.CJ.75
Locality:

 

Notes: