Drugmanite Mineral Data
General Drugmanite Information
Chemical Formula:
Pb2(Fe+++,Al)H(PO4)2(OH)2
Composition:
Molecular Weight = 688.00 gm
Aluminum 0.98 % Al 1.85 % Al2 O3
Iron 6.09 % Fe 8.70 % Fe2 O3
Phosphorus 9.00 % P 20.63 % P2 O5
Hydrogen 0.44 % H 3.93 % H2 O
Lead 60.23 % Pb 64.88 % PbO
Oxygen 23.26 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Pb2 Fe3+ 0.75 Al0.25 H(PO4 )2 (OH)2
Environment:
Formed at low temperatures in vugs in mineralized limestones, an oxidation product of disseminated sulfides.
IMA Status:
Approved IMA 1979
Locality:
Richelle, near Vis�e, Belgium. Link to MinDat.org Location Data.
Name Origin:
Named for Julien Drugman (1875-1950), Belgian mineralogist.
Name Pronunciation:
Drugmanite + Pronunciation
Synonym:
ICSD 202794
PDF 33-732
Drugmanite Image
Images:
Drugmanite
Comments: SEM view of a typical drugrnanite crystal.
Location: Found in silicified karst deposits, Richelle, 15 km north of Liege, Belgium.
Scale: Picture Size 9 µm.
© Mineralogical Magazine
Drugmanite Crystallography
Axial Ratios:
a:b:c =1.3916:1:0.5822
Cell Dimensions:
a = 11.1, b = 7.976, c = 4.644, Z = 2; beta = 90.6° V = 411.13 Den(Calc)= 5.56
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21 /a
X Ray Diffraction:
By Intensity(I/Io ): 3.752(1), 4.63(0.9), 3.35(0.8),
Physical Properties of Drugmanite
Color:
Colorless, Light yellow.
Density:
5.55
Diaphaneity:
Transparent
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Drugmanite
Gladstone-Dale:
CI meas = 0.071 (Fair) - where the CI = (1-KPDmeas /KC ) CI calc = 0.072 (Fair) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.1565,KPDmeas = 0.1568,KC = 0.1687 Ncalc = 1.94
Optical Data:
Biaxial (?), b=1.87, 2V(Meas)=33.
Calculated Properties of Drugmanite
Electron Density:
Bulk Density (Electron Density)=4.84 gm/cc note: Specific Gravity of Drugmanite =5.55 gm/cc.
Fermion Index:
Fermion Index = 0.13 Boson Index = 0.87
Photoelectric:
PEDrugmanite =1,063.69 barns/electronU=PEDrugmanite x r Electron Density=5,144.12 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Drugmanite is Not Radioactive
Drugmanite Classification
Dana Class:
41.10.11.01 (41) Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
(41.10) where (A++ B++)3 (XO4)2 Zq
(41.10.11) Dana Group
41.10.11.01 Drugmanite Pb2(Fe,Al)H(PO4)2(OH)2 P 21 /a 2/m
Strunz Class:
08.BH.15 08 - PHOSPHATES, ARSENATES, VANADATES
08.B - Phosphates, etc. with Additional Anions, without H2O
08.BH -With medium-sized and large cations, (OH,etc.):RO4 = 1:1
08.BH.15 Drugmanite Pb2(Fe,Al)H(PO4)2(OH)2 P 21 /a 2/m
Other Drugmanite Information
References:
NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
See Also:
Links to other databases for Drugmanite :
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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Drugmanite
Pb2(Fe+++,Al)H(PO4)2(OH)2
Dana No: 41.10.11.01 Strunz No: 08.BH.15
Locality:
Notes:
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