Arsenbrackebuschite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Arsenbrackebuschite
Formula:
Pb2Fe3+(AsO4)2(OH)
May rarely contain minor Zn replacing Fe; charge-balance by H2O substituting for OH.
Colour:
Light amber yellow to red brown
Lustre:
Sub-Adamantine, Sub-Vitreous, Resinous, Waxy
Hardness:
4½
Specific Gravity:
6.54 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Named by Wolfgang Hofmeister and Ekkehart Tillmanns in 1976 in allusion to this species being the arsenate analogue of brackebuschite.
Unique Identifiers
Mindat ID:
6807
Long-form identifier:
mindat:1:1:6807:5
IMA Classification of Arsenbrackebuschite
Approved
IMA Formula:
Pb2+2(Fe3+,Zn2+)(As5+O4)2(OH,H2O)
Approval year:
1977
First published:
1978
Classification of Arsenbrackebuschite
8.BG.05
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
G : With medium-sized and large cations, (OH, etc.):RO4 = 0.5:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
G : With medium-sized and large cations, (OH, etc.):RO4 = 0.5:1
40.2.8.2
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
2 : AB2(XO4)2·xH2O
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Abbs | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Arsenbrackebuschite
Sub-Adamantine, Sub-Vitreous, Resinous, Waxy
Transparency:
Transparent, Translucent
Colour:
Light amber yellow to red brown
Streak:
Light brownish yellow
Hardness:
4½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
{010}
{010}
Density:
6.54 g/cm3 (Calculated)
Optical Data of Arsenbrackebuschite
Type:
Biaxial (-)
RI values:
nα = 2 nγ = 2.04
2V:
Measured: 30°
Birefringence:
0.04
Max. Birefringence:
δ = 0.040
Based on recorded range of RI values above.
Based on recorded range of RI values above.
Interference Colours:
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
The colours simulate birefringence patterns seen in thin section under crossed polars. They do not take into account mineral colouration or opacity.
Michel-Levy Bar The default colours simulate the birefringence range for a 30 µm thin-section thickness. Adjust the slider to simulate a different thickness.
Grain Simulation You can rotate the grain simulation to show how this range might look as you rotated a sample under crossed polars. Each grain retains its interference colour (retardation) while its brightness falls to black at extinction and reaches a maximum between extinction positions.
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized biaxial acute bisectrix (Bxa) interference figure
- the conoscopic view for a grain cut perpendicular to the acute bisectrix, using
this mineral's 2V. The two small white dots mark the melatopes - the points
where the two optic axes emerge - and are shown only when they fall within the
field of view. The coloured bands are isochromatics, and the dark bands are
isogyres.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Rotate the stage: at 0°/90° the isogyres form a cross through the melatopes; at 45° they pull apart into curved hyperbolas. That splitting on rotation - absent in a uniaxial figure - is the standard diagnostic test for telling biaxial minerals from uniaxial ones. If 2V is large, the melatopes may fall outside the field of view, as they often do at the microscope too.
Dispersion:
relatively weak
Comments:
RI difficult to measure; X' < 2.00, Z" > 2.04.
Chemistry of Arsenbrackebuschite
Mindat Formula:
Pb2Fe3+(AsO4)2(OH)
May rarely contain minor Zn replacing Fe; charge-balance by H2O substituting for OH.
May rarely contain minor Zn replacing Fe; charge-balance by H2O substituting for OH.
Element Weights:
Crystallography of Arsenbrackebuschite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P2/m
Setting:
P2/m
Cell Parameters:
a = 7.763 Å, b = 6.046 Å, c = 9.022 Å
β = 112.5°
β = 112.5°
Ratio:
a:b:c = 1.284 : 1 : 1.492
Unit Cell V:
391.22 ų (Calculated from Unit Cell)
Z:
2
Morphology:
Wedge-shaped crystals, also elongated.
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0015672 | Arsenbrackebuschite | Hofmeister W, Tillmanns E (1978) Strukturelle untersuchungen an arsenbrackebuschit Tschermaks Mineralogische und Petrographische Mitteilungen 25 153-163 | 1978 | Tsumeb, Namibia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.92 Å | (25) |
| 3.68 Å | (25) |
| 3.44 Å | (30) |
| 3.268 Å | (90) |
| 3.02 Å | (100) |
| 3.012 Å | (100) |
| 2.777 Å | (60) |
| 2.313 Å | (30) |
| 2.133 Å | (30) |
Comments:
ICDD 29-1428; strongest lines may appear as a single diffuse line.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47b : [Sulfates and sulfites] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Arsenbrackebuschite
Co-Type Localities:
General Appearance of Type Material:
Flat laths or platelets, with max dimensions 0.5 mm long, 0.2 mm wide, 0.1 mm thick, on fissures in dolomite breccia.
Place of Conservation of Type Material:
Institute for Geosciences, University of Mainz, Mainz, Germany.
Institute for Mineralogy and Crystallography, University of Stuttgart, Stuttgart, Germany, CL1,14.
Institute for Mineralogy and Crystallography, University of Stuttgart, Stuttgart, Germany, CL1,14.
Geological Setting of Type Material:
Oxide zone of a complex polymetallic ore hydrothermal deposit
Associated Minerals at Type Locality:
Synonyms of Arsenbrackebuschite
Other Language Names for Arsenbrackebuschite
Dutch:Arsenbrackebuschiet
French:Arsenbrackebuschite
Norwegian:Arsenbrackebuschitt
Russian:Арсенбракебушит
Relationship of Arsenbrackebuschite to other Species
Member of:
Other Members of Brackebuschite Supergroup:
| Aldomarinoite | Sr2Mn3+(AsO4)2(OH) | Mon. 2/m : P21/m |
| Arsentsumebite | Pb2Cu(AsO4)(SO4)(OH) | Mon. 2/m : P21/m |
| Bearthite | Ca2Al(PO4)2(OH) | Mon. 2/m : P21/m |
| Brackebuschite | Pb2Mn3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Bushmakinite | Pb2Al(PO4)(VO4)(OH) | Mon. 2/m : P21/m |
| Calderónite | Pb2Fe3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Canosioite | Ba2Fe3+(AsO4)2(OH) | Mon. 2/m : P21/m |
| Feinglosite | Pb2Zn(AsO4)2 · H2O | Mon. 2/m |
| Ferribushmakinite | Pb2Fe3+(PO4)(VO4)(OH) | Mon. 2/m : P21/m |
| Gamagarite | Ba2Fe3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Goedkenite | Sr2Al(PO4)2(OH) | Mon. 2/m : P21/m |
| Grandaite | Sr2Al(AsO4)2(OH) | Mon. 2/m : P21/m |
| Lombardoite | Ba2Mn3+(AsO4)2(OH) | Mon. 2/m : P21/m |
| Tokyoite | Ba2Mn3+(VO4)2(OH) | Mon. 2/m : P21/m |
| Tsumebite | Pb2Cu(PO4)(SO4)(OH) | Mon. 2/m : P21/m |
| 'Unnamed (possible ordered As-analogue of Tokyoite)' | Ba2Mn[(As,V)O4]2(OH) | Mon. 2/m : P21/m |
Common Associates
Associations Based on Photo Data:
| 11 photos of Arsenbrackebuschite associated with Segnitite | PbFe3+3AsO4(AsO3OH)(OH)6 |
| 11 photos of Arsenbrackebuschite associated with Mimetite | Pb5(AsO4)3Cl |
| 8 photos of Arsenbrackebuschite associated with Beudantite | PbFe3+3(AsO4)(SO4)(OH)6 |
| 7 photos of Arsenbrackebuschite associated with Carminite | PbFe3+2(AsO4)2(OH)2 |
| 3 photos of Arsenbrackebuschite associated with Smithsonite | ZnCO3 |
| 3 photos of Arsenbrackebuschite associated with Quartz | SiO2 |
| 2 photos of Arsenbrackebuschite associated with Duftite | PbCu(AsO4)(OH) |
| 2 photos of Arsenbrackebuschite associated with Adamite | Zn2(AsO4)(OH) |
| 2 photos of Arsenbrackebuschite associated with Calcite | CaCO3 |
| 1 photo of Arsenbrackebuschite associated with Cerussite | PbCO3 |
Related Minerals - Strunz-mindat Grouping
| 8.BG. | Aldomarinoite | Sr2Mn3+(AsO4)2(OH) |
| 8.BG. | Dongchuanite | Pb4ZnZn2(PO4)4(OH)2 |
| 8.BG. | Cuprodongchuanite | Pb4CuZn2(PO4)4(OH)2 |
| 8.BG. | Canosioite | Ba2Fe3+(AsO4)2(OH) |
| 8.BG.05 | Feinglosite | Pb2Zn(AsO4)2 · H2O |
| 8.BG.05 | Tokyoite | Ba2Mn3+(VO4)2(OH) |
| 8.BG.05 | Lombardoite | Ba2Mn3+(AsO4)2(OH) |
| 8.BG.05 | Bearthite | Ca2Al(PO4)2(OH) |
| 8.BG.05 | 'Unnamed (possible ordered As-analogue of Tokyoite)' | Ba2Mn[(As,V)O4]2(OH) |
| 8.BG.05 | Gamagarite | Ba2Fe3+(VO4)2(OH) |
| 8.BG.05 | Arsentsumebite | Pb2Cu(AsO4)(SO4)(OH) |
| 8.BG.05 | 'UM1994-19-PO:CuHMoPb' | Pb2Cu(PO4)(MoO4,AsO4,CrO4,GaO4)(OH) |
| 8.BG.05 | Ferribushmakinite | Pb2Fe3+(PO4)(VO4)(OH) |
| 8.BG.05 | Goedkenite | Sr2Al(PO4)2(OH) |
| 8.BG.05 | Tsumebite | Pb2Cu(PO4)(SO4)(OH) |
| 8.BG.05 | Brackebuschite | Pb2Mn3+(VO4)2(OH) |
| 8.BG.05 | Bushmakinite | Pb2Al(PO4)(VO4)(OH) |
| 8.BG.05 | Calderónite | Pb2Fe3+(VO4)2(OH) |
| 8.BG.10 | Mélonjosephite | CaFe2+Fe3+(PO4)2(OH) |
| 8.BG.15 | Tancoite | LiNa2Al(PO4)(PO3OH)(OH) |
| 8.BG.20 | Dmisokolovite | K3Cu5AlO2(AsO4)4 |
| 8.BG.25 | Shchurovskyite | K2CaCu6O2(AsO4)4 |
| 8.BG.30 | Wrightite | K2Al2O(AsO4)2 |
| 8.BG.35 | Polyarsite | Na7CaMgCu2(AsO4)4F2Cl |
Fluorescence of Arsenbrackebuschite
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.
Internet Links for Arsenbrackebuschite
mindat.org URL:
https://www.mindat.org/min-6807.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Arsenbrackebuschite
Reference List:
Hofmeister, W., Tillmanns, E. (1978) Strukturelle Untersuchungen an Arsenbrackebuschit. TMPM Tschermaks Mineralogische und Petrographische Mitteilungen, 25 (3). 153-163 doi:10.1007/bf01081416
Cámara, F., Bittarello, E., Ciriotti, M. E., Nestola, F., Radica, F., Massimi, F., Balestra, C., Bracco, R. (2017) As-bearing new mineral species from Valletta mine, Maira Valley, Piedmont, Italy: III. Canosioite, Ba2Fe3+(AsO4)2(OH), description and crystal structure. Mineralogical Magazine, 81 (2) 305-317 doi:10.1180/minmag.2016.080.097
Localities for Arsenbrackebuschite
Showing 30 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
Austria | |
| Pichler (2003) |
| Auer et al. (2015) |
| Tomazic (1999) |
| Kolitsch et al. (2026) |
| Poeverlein |
| Schnorrer et al. (2002) |
France | |
| Uwe Kolitsch (SEM-EDS analyses, to be published) |
| Kolitsch et al. (2009) | |
| Favreau G. et al. (1996) |
Germany | |
| Walenta (1998) |
| Fortschr. Mineral. (1976) +3 other references |
| Walenta (1996) |
| S Wolfsried collection |
| Petitjean et al. (2000) |
| Schlegel (2001) |
Indonesia | |
| Scotney et al. (2005) |
Mexico | |
| Robert Meyer. ID by Marcus Origlieri |
Morocco | |
| Favreau (2026) |
Namibia (TL) | |
| Fortschr. Mineral. (1976) +2 other references |
South Africa | |
| Atanasova et al. (2016) |
| Costin et al. (2014) |
Spain | |
| Rewitzer et al. (2018) |
Thailand | |
| Patrice Queneau Collection visual identification. Confirmed. Analyzed by Nicolas Meisser (Naturéum) |
USA | |
| Species confirmed by Paul Adams using Raman Spectroscopy. (Personal communication November 2019) |
| www.mineralsocal.org (1999) |
| Collection of J.Dagenais |
| Silver Coin Mine. Compact Disc. Paul ... |
| Collected by and in the collection of ... |
| Anthony et al. (2000) |
| Handbook of Mineralogy: ... +1 other reference |
Quick NavTopAbout ArsenbrackebuschiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography Crystal StructureX-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesRelationshipsCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany