Guerinite Mineral Data (original) (raw)

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

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

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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Help on Above

| | 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 - GeoScienceWorld
7 - Google Images
8 - Google Scholar
9 - Handbook of Mineralogy (MinSocAm)
10 - Handbook of Mineralogy (UofA)
11 - MinDAT
12 - Mineralienatlas (Deutsch)
13 - Online Mineral Museum
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: