Trolleite Mineral Data
General Trolleite Information
Chemical Formula:
Al4(PO4)3(OH)3
Composition:
Molecular Weight = 443.86 gm
Aluminum 24.32 % Al 45.94 % Al2 O3
Phosphorus 20.93 % P 47.97 % P2 O5
Hydrogen 0.68 % H 6.09 % H2 O
Oxygen 54.07 % O
______ ______
100.00 % 100.00 % = TOTAL OXIDE
Empirical Formula:
Al4 (PO4 )3 (OH)3
Environment:
Amphibolite-grade metamorphic rocks.
IMA Status:
Valid Species (Pre-IMA) 1868
Locality:
Vastana mine, near Nasum, Skane, Sweden. Link to MinDat.org Location Data.
Name Origin:
Named for Hans Gabriel Trolle-Wachtmeister (1782-1871), Swedish chemist.
Name Pronunciation:
Trolleite + Pronunciation
Synonym:
ICSD 6193
PDF 42-1352
Trolleite Image
Images:
Images:
Images:
Trolleite Crystallography
Axial Ratios:
a:b:c =2.6384:1:1.0001
Cell Dimensions:
a = 18.894, b = 7.161, c = 7.162, Z = 4; beta = 99.99° V = 954.33 Den(Calc)= 3.09
Crystal System:
Monoclinic - Prismatic H-M Symbol (2/m) Space Group: I2/c
X Ray Diffraction:
By Intensity(I/Io ): 3.208(1), 3.095(0.9), 3.075(0.5),
Physical Properties of Trolleite
Cleavage:
{???} Indistinct
Color:
Light blue, Light green.
Density:
3.09
Fracture:
Conchoidal - Uneven - Uneven fracture producing small, conchoidal fragments.
Hardness:
5.5-6 - Knife Blade-Orthoclase
Luster:
Vitreous (Glassy)
Streak:
white
Optical Properties of Trolleite
Gladstone-Dale:
CI meas = -0.007 (Superior) - where the CI = (1-KPDmeas /KC ) CI calc = -0.007 (Superior) - where the CI = (1-KPDcalc /KC )
KPDcalc = 0.2051,KPDmeas = 0.2051,KC = 0.2036 Ncalc = 1.63
Optical Data:
Biaxial (-), a=1.619, b=1.639, g=1.643, bire=0.0240, 2V(Calc)=46, 2V(Meas)=49.
Calculated Properties of Trolleite
Electron Density:
Bulk Density (Electron Density)=3.06 gm/cc note: Specific Gravity of Trolleite =3.09 gm/cc.
Fermion Index:
Fermion Index = 0.0002605521 Boson Index = 0.9997394479
Photoelectric:
PETrolleite = 1.72 barns/electronU=PETrolleite x r Electron Density= 5.28 barns/cc.
Radioactivity:
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Trolleite is Not Radioactive
Trolleite Classification
Dana Class:
41.11.01.01 (41) Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
(41.11) with miscellaneous formulae
(41.11.01) Dana Group
41.11.01.01 Trolleite Al4(PO4)3(OH)3 I2/c 2/m
Strunz Class:
08.BB.45 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.45 Trolleite Al4(PO4)3(OH)3 I2/c 2/m
Other Trolleite 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 Trolleite :
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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Trolleite
Al4(PO4)3(OH)3
Dana No: 41.11.01.01 Strunz No: 08.BB.45
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