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 % Al₂O₃

Iron 6.09 % Fe 8.70 % Fe₂O₃

Phosphorus 9.00 % P 20.63 % P₂O₅

Hydrogen 0.44 % H 3.93 % H₂O

Lead 60.23 % Pb 64.88 % PbO

Oxygen 23.26 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Pb₂Fe³⁺_0.75Al_0.25H(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

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 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:

PE_Drugmanite=1,063.69 barns/electron
U=PE_Drugmanite x rElectron 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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Print or Cut-and-Paste your Drugmanite Specimen Label here :

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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