Hydroxylwagnerite Mineral Data

General Hydroxylwagnerite Information

Chemical Formula: Mg2(PO4)(OH) Composition: Molecular Weight = 160.59 gm    Magnesium   30.27 %  Mg   50.20 % MgO    Phosphorus  19.29 %  P    44.20 % P₂O₅    Hydrogen     0.63 %  H     5.61 % H₂O    Oxygen      49.81 %  O               ______        ______                100.00 %      100.00 % = TOTAL OXIDE Empirical Formula: Mg₂(PO₄)(OH) Environment: Triplite-triploidite group. IMA Status: Approved IMA 2004 (Dana # Added) Locality: Dora-Maira massif, Vallone di Gilba, Val Varaita, Piemonte, Italy Link to MinDat.org Location Data. Name Origin: Named as the OH analog of wagnerite. Name Pronunciation: Hydroxylwagnerite + Pronunciation Synonym: ICSD 40829   IMA2004-009   PDF 47-957  

Hydroxylwagnerite Image

Images:

Hydroxylwagnerite Comments: Small cavity in white quartzite with several tan-colored hydroxylwagnerite crystals with red arrow pointing to the cavity. Location: Dora Maira Massif, Val Varaita, Piedmont, Italy. Scale: Picture size 3 mm. © John Betts - Fine Minerals

Hydroxylwagnerite Crystallography

Axial Ratios: a:b:c =0.7509:1:0.9385 Cell Dimensions: a = 9.656, b = 12.859, c = 12.069, Z = 16; beta = 108.49° V = 1,421.21 Den(Calc)= 3.00 Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/c X Ray Diffraction: By Intensity(I/I_o): 2.984(1), 2.851(0.8), 3.117(0.66),3.292(0.5), 2.752(0.28), 2.71(0.19), 2.484(0.14),  

Physical Properties of Hydroxylwagnerite

Color: Tan. Diaphaneity: Transparent Luster: Vitreous (Glassy) Streak: white  

Optical Properties of Hydroxylwagnerite

Optical Data: NCalc= 1.6 - from Gladstone-Dale relationship (KC = 0.2003) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Hydroxylwagnerite

Electron Density: Bulk Density (Electron Density)=2.99 gm/cc
note: Specific Gravity of Hydroxylwagnerite =3.00 gm/cc.
Fermion Index: Fermion Index = 0.03
Boson Index = 0.97 Photoelectric: PE_{Hydroxylwagnerite} = 1.60 barns/electron
U=PE_{Hydroxylwagnerite} x rElectron Density= 4.79 barns/cc.
Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Hydroxylwagnerite is Not Radioactive  

Hydroxylwagnerite Classification

Dana Class: 41.06.02.02 (41)Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen   (41.06)where (A)2 (XO4) Zq   (41.06.02)Wagnerite Group  

41.06.02.01 Wagnerite (Mg,Fe)2(PO4)F P 2₁/a 2/m

 

41.06.02.02 Hydroxylwagnerite! Mg2(PO4)(OH) P 2₁/c 2/m

Strunz Class: 08.BB.10 08 - PHOSPHATES, ARSENATES, VANADATES   08.B - Phosphates, etc. with Additional Anions, without H2O   08.BB -With only medium-sized cations, (OH, etc.):RO4 £ 1:1  

08.BB.10 Magniotriplite? (Mg,Fe,Mn)2(PO4)F P 2₁/a 2/m

 

08.BB.10 Hydroxylwagnerite! Mg2(PO4)(OH) P 2₁/c 2/m

 

08.BB.10 Triplite (Mn,Fe,Mg,Ca)2(PO4)(F,OH) I2/m 2/m

 

08.BB.10 Zwieselite (Fe,Mn)2(PO4)F I2/a 2/m

 

Other Hydroxylwagnerite Information

References: PHYS. PROP.(Zeitschrift fUr Kristallographie 177, 15-26) See Also: Links to other databases for Hydroxylwagnerite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info
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