Gabrielsonite
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About Gabrielsonite
Formula:
PbFe3+(As3+O3)O
Colour:
Greenish-brown, black
Lustre:
Adamantine
Hardness:
3½
Specific Gravity:
6.67
Crystal System:
Orthorhombic
Member of:
Name:
Named by Paul (Paulus) Brian Moore in 1967 in honor of Swedish mineralogist, Olof Erik Gabrielson (December 10, 1912 Örebro, Sweden - January 28, 1980) who was at the University of Stockholm and later at the Swedish Museum of Natural History.
Type Locality:
Adelite-Descloizite Group.
The crystal structure is unsolved; it appears to be microtwinned (U. Kolitsch, unpubl. results).
IMA proposal 17-G was accepted and the former formula, PbFeAsO4(OH), was changed. It makes the mineral an arsenite instead of an arsenate.
The crystal structure is unsolved; it appears to be microtwinned (U. Kolitsch, unpubl. results).
IMA proposal 17-G was accepted and the former formula, PbFeAsO4(OH), was changed. It makes the mineral an arsenite instead of an arsenate.
Classification of Gabrielsonite
Approved
Notes:
Redefined by the IMA
Approval Year:
1966
Approval History:
IMA 17-G
7/B.26-70
8.BH.35
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
H : With medium-sized and large cations, (OH,etc.):RO4 = 1:1
41.5.1.5
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
41 : ANHYDROUS PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
5 : (AB)2(XO4)Zq
20.5.11
20 : Arsenates (also arsenates with phosphate, but without other anions)
5 : Arsenates of Ti and Pb
20 : Arsenates (also arsenates with phosphate, but without other anions)
5 : Arsenates of Ti and Pb
Physical Properties of Gabrielsonite
Adamantine
Transparency:
Translucent
Colour:
Greenish-brown, black
Streak:
Light brown
Hardness:
3½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven, Sub-Conchoidal
Density:
6.67 g/cm3 (Measured) 6.69 g/cm3 (Calculated)
Optical Data of Gabrielsonite
Type:
Biaxial (-)
RI values:
n = 2.
2V:
Measured: 80° to 90°
Max Birefringence:
δ = 0.000

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
r
Optical Extinction:
Parallel
Pleochroism:
Strong
Comments:
X, Z = olive green, Y = red brown. Y > X = Z
Chemical Properties of Gabrielsonite
Formula:
PbFe3+(As3+O3)O
IMA Formula:
PbFe(AsO4)(OH)
Elements listed:
Crystallography of Gabrielsonite
Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Pmc21
Cell Parameters:
a = 7.86 Å, b = 5.98 Å, c = 8.62 Å
Ratio:
a:b:c = 1.314 : 1 : 1.441
Unit Cell V:
405.16 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Granular
Comment:
P21ma
X-Ray Powder Diffraction
Powder Diffraction Data:
d-spacing | Intensity |
---|---|
4.91 | (30) |
3.93 | (30) |
3.19 | (100) |
3.07 | (100) |
2.71 | (40) |
2.65 | (40) |
1.622 | (40) |
1.438 | (40) |
Comments:
ICDD 20-583
Type Occurrence of Gabrielsonite
General Appearance of Type Material:
black grains to several mm
Geological Setting of Type Material:
Manganese and arsenic mineralized skarn
Associated Minerals at Type Locality:
Synonyms of Gabrielsonite
Other Language Names for Gabrielsonite
Relationship of Gabrielsonite to other Species
Member of:
Other Members of this group:
Adelite | CaMg(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Arsendescloizite | PbZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Austinite | CaZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Čechite | PbFe2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) |
Cobaltaustinite | CaCo(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Conichalcite | CaCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Descloizite | PbZn(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
Duftite | PbCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Duftite-alpha | PbCu(AsO4)(OH) | |
Gottlobite | CaMg(VO4,AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Hermannroseite | CaCu(PO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Mottramite | PbCu(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
Nickelaustinite | CaNi(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Pyrobelonite | PbMn2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
Tangeite | CaCu(VO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Vuagnatite | CaAl(SiO4)(OH) | Orth. |
Related Minerals - Nickel-Strunz Grouping
8.BH.05 | Thadeuite | Ca(Mg,Fe2+)3(PO4)2(OH,F)2 | Orth. 2 2 2 : C2 2 21 |
8.BH.10 | Durangite | NaAl(AsO4)F | Mon. 2/m : B2/b |
8.BH.10 | Isokite | CaMg(PO4)F | Mon. 2/m : B2/b |
8.BH.10 | Lacroixite | NaAl(PO4)F | Mon. 2/m : B2/b |
8.BH.10 | Maxwellite | NaFe3+(AsO4)F | Mon. |
8.BH.10 | Panasqueiraite | CaMg(PO4)(OH,F) | Mon. |
8.BH.10 | Tilasite | CaMg(AsO4)F | Mon. m : Bb |
8.BH.15 | Drugmanite | Pb2(Fe3+,Al)(PO4)(PO3OH)(OH)2 | Mon. 2/m : P21/b |
8.BH.20 | Bjarebyite | (Ba,Sr)(Mn2+,Fe2+,Mg)2Al2(PO4)3(OH)3 | Mon. |
8.BH.20 | Cirrolite | Ca3Al2(PO4)3(OH)3 (?) | |
8.BH.20 | Kulanite | Ba(Fe2+,Mn2+,Mg)2(Al,Fe3+)2(PO4)3(OH)3 | Mon. |
8.BH.20 | Penikisite | Ba(Mg,Fe2+,Ca)2Al2(PO4)3(OH)3 | Mon. 2/m : P21/m |
8.BH.20 | Perloffite | Ba(Mn2+,Fe2+)2Fe3+2(PO4)3(OH)3 | Mon. 2/m : P21/m |
8.BH.20 | Johntomaite | BaFe2+2Fe3+2(PO4)3(OH)3 | Mon. 2/m : P21/m |
8.BH.25 | Bertossaite | (Li,Na)2(Ca,Fe2+,Mn2+)Al4(PO4)4(OH,F)4 | Orth. |
8.BH.25 | Palermoite | (Li,Na)2(Sr,Ca)Al4(PO4)4(OH)4 | Orth. |
8.BH.30 | Carminite | PbFe3+2(AsO4)2(OH)2 | Orth. mmm (2/m 2/m 2/m) : Cccm |
8.BH.30 | Sewardite | CaFe3+2(AsO4)2(OH)2 | Orth. mmm (2/m 2/m 2/m) : Cccm |
8.BH.35 | Adelite | CaMg(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Arsendescloizite | PbZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Austinite | CaZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Cobaltaustinite | CaCo(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Conichalcite | CaCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Duftite | PbCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Nickelaustinite | CaNi(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Tangeite | CaCu(VO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Gottlobite | CaMg(VO4,AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.35 | Hermannroseite | CaCu(PO4)(OH) | Orth. 2 2 2 : P21 21 21 |
8.BH.40 | Čechite | PbFe2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) |
8.BH.40 | Descloizite | PbZn(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
8.BH.40 | Mottramite | PbCu(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
8.BH.40 | Pyrobelonite | PbMn2+(VO4)(OH) | Orth. mmm (2/m 2/m 2/m) : Pnma |
8.BH.45 | Bayldonite | PbCu3(AsO4)2(OH)2 | Mon. 2/m : B2/b |
8.BH.45 | Vésigniéite | BaCu3(VO4)2(OH)2 | Mon. 2/m : B2/m |
8.BH.50 | Paganoite | NiBi(AsO4)O | Tric. |
8.BH.55 | Jagowerite | BaAl2(PO4)2(OH)2 | Tric. |
8.BH.60 | Attakolite | (Ca,Sr)Mn(Al,Fe)4(HPO4,PO4)3(SiO4,PO4)(OH)4 | Mon. 2/m : B2/m |
8.BH.65 | Leningradite | PbCu3(VO4)2Cl | Orth. mmm (2/m 2/m 2/m) : Ibam |
Related Minerals - Dana Grouping (8th Ed.)
41.5.1.1 | Adelite | CaMg(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.2 | Conichalcite | CaCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.3 | Austinite | CaZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.4 | Duftite | PbCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.6 | Tangeite | CaCu(VO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.7 | Nickelaustinite | CaNi(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.8 | Cobaltaustinite | CaCo(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.9 | Arsendescloizite | PbZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
41.5.1.11 | Hermannroseite | CaCu(PO4)(OH) | Orth. 2 2 2 : P21 21 21 |
Related Minerals - Hey's Chemical Index of Minerals Grouping
20.5.1 | Cafarsite | Ca5.9Mn1.7Fe3Ti3(AsO3)12 · 4-5H2O | Iso. m3 (2/m 3) : Pn3 |
20.5.2 | Schultenite | Pb(HAsO4) | Mon. 2/m : P2/b |
20.5.3 | Duftite | PbCu(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
20.5.4 | Bayldonite | PbCu3(AsO4)2(OH)2 | Mon. 2/m : B2/b |
20.5.5 | Philipsbornite | PbAl3(AsO4)(AsO3OH)(OH)6 | Trig. |
20.5.6 | Arsendescloizite | PbZn(AsO4)(OH) | Orth. 2 2 2 : P21 21 21 |
20.5.7 | Helmutwinklerite | Pb(Zn,Cu)2(AsO4)2 · 2H2O | Tric. |
20.5.8 | Thometzekite | PbCu2+2(AsO4)2 · 2H2O | Mon. 2/m : B2/m |
20.5.9 | Caryinite | (Na,Pb)(Ca,Na)CaMn2+2(AsO4)3 | Mon. 2/m |
20.5.10 | Ludlockite | PbFe3+4As3+10O22 | Tric. 1 : P1 |
20.5.12 | Carminite | PbFe3+2(AsO4)2(OH)2 | Orth. mmm (2/m 2/m 2/m) : Cccm |
20.5.13 | Segnitite | PbFe3+3AsO4(AsO3OH)(OH)6 | Trig. 3m (3 2/m) : R3m |
20.5.14 | Tsumcorite | PbZn2(AsO4)2 · 2H2O | Mon. |
20.5.15 | Jamesite | Pb2Zn(Fe2+,Zn)2Fe3+4(AsO4)4(OH)10 | Tric. |
20.5.16 | Mawbyite | Pb(Fe3+,Zn)2(AsO4)2 · 2(OH,H2O) | Mon. |
20.5.17 | Arsenbrackenbuschite | Pb2Fe3+(AsO4)2(OH) |
Fluorescence of Gabrielsonite
Not fluorescent
Other Information
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
References for Gabrielsonite
Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Moore, Paul (Paulus) Brian, 1967, [Gabrielsonite], Arkiv. Min. Geol., 4: 401
(abstract) American Mineralogist: 53: 1063-1064.
Internet Links for Gabrielsonite
mindat.org URL:
https://www.mindat.org/min-1626.html
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External Links:
Mineral Dealers:
Localities for Gabrielsonite
Locality List




All localities listed without proper references should be considered as questionable.
Sweden (TL) | |
| Arkiv Min.Geol.(1967) 4, 401-405; Clark, 1993, 249 - "Hey's Mineral Index - 3rd Edition"; Nysten, P., Holtstam, D. and Jonsson, E. (1999) The Långban minerals. In Långban - The mines,their minerals, geology and explorers (D. Holtstam and J. Langhof, eds.), Swedish Museum of Natural History and Raster Förlag, Stockholm & Chr. Weise Verlag, Munich, pp. 89-183. |
Långban, Filipstad, Värmland, Sweden