Bariopharmacoalumite
A valid IMA mineral species
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About Bariopharmacoalumite
Formula:
Ba0.5Al4(AsO4)3(OH)4 · 4H2O
Colour:
Colourless to pale yellow
Lustre:
Adamantine
Hardness:
3½
Specific Gravity:
2.580 (Calculated)
Crystal System:
Isometric
Member of:
Name:
Named in allusion to its composition, being the BARIum analogue of Pharmacoalumite, where the barium substitutes for potassium.
This page provides mineralogical data about Bariopharmacoalumite.
Unique Identifiers
Mindat ID:
40283
Long-form identifier:
mindat:1:1:40283:3
GUID
(UUID V4):
(UUID V4):
2fb4b774-9ed3-47a8-91e3-c562bbd8367a
IMA Classification of Bariopharmacoalumite
Classification of Bariopharmacoalumite
8.DK.12
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
K : With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
K : With large and medium-sized cations, (OH, etc.):RO4 > 1:1 and < 2:1
42.8.1b.3
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
8 : (AB)5(XO4)3Zq·xH2O
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
8 : (AB)5(XO4)3Zq·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 |
|---|---|---|
| Bpal | 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 Bariopharmacoalumite
Adamantine
Transparency:
Transparent, Translucent
Colour:
Colourless to pale yellow
Streak:
White
Hardness:
3½ on Mohs scale
Hardness:
VHN100=165.24 - 327.38 - Vickers
Comment:
Mohs hardness was estimated from Vickers data.
Tenacity:
Brittle
Cleavage:
Imperfect/Fair
on {001}
on {001}
Fracture:
Irregular/Uneven
Density:
2.580 g/cm3 (Calculated)
Optical Data of Bariopharmacoalumite
Type:
Isotropic
RI values:
n = 1.573
Birefringence:
Isotropic minerals have no birefringence
Surface Relief:
Low
Comments:
Bariopharmacoalumite shows anomalous extinction, typical of members of the supergroup and deep blue internal reflections probably due to twinning.
Chemistry of Bariopharmacoalumite
Mindat Formula:
Ba0.5Al4(AsO4)3(OH)4 · 4H2O
Crystallography of Bariopharmacoalumite
Crystal System:
Isometric
Class (H-M):
4 3m - Hextetrahedral
Space Group:
P4 3m
Cell Parameters:
a = 7.742(4) Å
Unit Cell V:
464.2 ų
Z:
1
Morphology:
The only form observed is {001}.
Crystal Structure
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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) |
|---|---|---|---|---|---|---|---|
| 0018374 | Bariopharmacoalumite | Mills S J, Rumsey M S, Favreau G, Spratt J, Raudsepp M, Dini M (2011) Bariopharmacoalumite, a new mineral species from Cap Garonne, France and Mina Grande, Chile Mineralogical Magazine 75 135-144 | 2011 | Cap Garonne, France | 0 | 293 | |
| 0018375 | Bariopharmacoalumite | Mills S J, Rumsey M S, Favreau G, Spratt J, Raudsepp M, Dini M (2011) Bariopharmacoalumite, a new mineral species from Cap Garonne, France and Mina Grande, Chile Mineralogical Magazine 75 135-144 | 2011 | Mina Grande, Chile | 0 | 293 | |
| 0020526 | Bariopharmacoalumite | Grey I E, Mumme W G, Price J R, Mills S J, Macrae C M, Favreau G (2014) BaCu ordering in bariopharmacoalumite-Q2a2b2c from Cap Garonne, France Mineralogical Magazine 78 851-860 | 2014 | South mine, Cap Garonne, France | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.759 Å | (100) |
| 5.485 Å | (27) |
| 4.454 Å | (18) |
| 3.878 Å | (27) |
| 3.456 Å | (14) |
| 3.159 Å | (16) |
| 2.738 Å | (16) |
| 2.582 Å | (10) |
| 2.452 Å | (12) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Bariopharmacoalumite
General Appearance of Type Material:
Radial growths of colourless to pale yellow interpenetrating cubes up to several millimetres across. Individual cubes are generally <0.1 mm in size and some exhibit stepped growth features. Some cubes are elongated, giving a rectangular outline.
Place of Conservation of Type Material:
Natural History Museum, London, England: BM 2010,82.
Geological Setting of Type Material:
Secondary mineral in a long fracture in conglomerate.
Associated Minerals at Type Locality:
Synonyms of Bariopharmacoalumite
Relationship of Bariopharmacoalumite to other Species
Member of:
Other Members of this group:
| Hydroniumpharmacoalumite | (H3O)Al4(AsO4)3(OH)4 · 4.5H2O | Iso. 4 3m : P4 3m |
| Natropharmacoalumite | NaAl4(AsO4)3(OH)4 · 4H2O | Iso. 4 3m : P4 3m |
| Pharmacoalumite | KAl4(AsO4)3(OH)4 · 6.5H2O | Iso. 4 3m : P4 3m |
Common Associates
Associated Minerals Based on Photo Data:
| 3 photos of Bariopharmacoalumite associated with Olivenite | Cu2(AsO4)(OH) |
| 2 photos of Bariopharmacoalumite associated with Mansfieldite | AlAsO4 · 2H2O |
| 2 photos of Bariopharmacoalumite associated with Cyanotrichite | Cu4Al2(SO4)(OH)12 · 2H2O |
| 2 photos of Bariopharmacoalumite associated with Scorodite | Fe3+AsO4 · 2H2O |
| 2 photos of Bariopharmacoalumite associated with Malachite | Cu2(CO3)(OH)2 |
| 2 photos of Bariopharmacoalumite associated with Wulfenite | Pb(MoO4) |
| 1 photo of Bariopharmacoalumite associated with Arsenogorceixite | BaAl3(AsO4)(AsO3OH)(OH)6 |
| 1 photo of Bariopharmacoalumite associated with Allophane | (Al2O3)(SiO2)1.3-2 · 2.5-3H2O |
| 1 photo of Bariopharmacoalumite associated with Tyrolite | Ca2Cu9(AsO4)4(CO3)(OH)8 · 11H2O |
| 1 photo of Bariopharmacoalumite associated with Chenevixite | Cu2Fe3+2(AsO4)2(OH)4 |
Related Minerals - Strunz-mindat Grouping
| 8.DK. | Richelsdorfite | Ca2Cu5Sb(AsO4)4(OH)6Cl · 6H2O |
| 8.DK. | Bimbowrieite | NaMgFe3+5(PO4)4(OH)6 · 2H2O |
| 8.DK. | Puttapaite | Pb2Mn2+2ZnCr3+4O2(AsO4)4(OH)6 · 12H2O |
| 8.DK.10 | Bariopharmacosiderite | Ba0.5Fe3+4(AsO4)3(OH)4 · 5H2O |
| 8.DK.10 | Pharmacosiderite | KFe3+4(AsO4)3(OH)4 · 6-7H2O |
| 8.DK.10 | Natropharmacosiderite | NaFe3+4(AsO4)3(OH)4 · 4H2O |
| 8.DK.10 | Hydroniumpharmacosiderite | (H3O)Fe4(AsO4)3(OH)4 · 4H2O |
| 8.DK.10 | Strontiopharmacosiderite | Sr0.5Fe4[(AsO4)3(OH)4] · 4H2O |
| 8.DK.10 | Thalliumpharmacosiderite | TlFe4[(AsO4)3(OH)4] · 4H2O |
| 8.DK.10 | Plumbopharmacosiderite | Pb0.5Fe3+4(AsO4)3(OH)4 · 5H2O |
| 8.DK.12 | Pharmacoalumite | KAl4(AsO4)3(OH)4 · 6.5H2O |
| 8.DK.12 | Natropharmacoalumite | NaAl4(AsO4)3(OH)4 · 4H2O |
| 8.DK.12 | Hydroniumpharmacoalumite | (H3O)Al4(AsO4)3(OH)4 · 4.5H2O |
| 8.DK.15 | Burangaite | NaFe2+Al5(PO4)4(OH)6 · 2H2O |
| 8.DK.15 | Dufrénite | Ca0.5Fe2+Fe3+5(PO4)4(OH)6 · 2H2O |
| 8.DK.15 | Natrodufrénite | NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O |
| 8.DK.15 | Matioliite | NaMgAl5(PO4)4(OH)6 · 2H2O |
| 8.DK.15 | Gayite | NaMn2+Fe3+5(PO4)4(OH)6 · 2H2O |
| 8.DK.20 | Kidwellite | NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33 |
| 8.DK.25 | Bleasdaleite | (Ca,Fe3+)2Cu5(Bi,Cu)(PO4)4(H2O,OH,Cl)13 |
| 8.DK.30 | Matulaite | (Fe3+,Al)Al7(PO4)4(PO3OH)2(OH)8(H2O)8 · 8H2O |
| 8.DK.35 | Krasnovite | Ba(Al,Mg)(PO4,CO3)(OH)2 · H2O |
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 Bariopharmacoalumite
mindat.org URL:
https://www.mindat.org/min-40283.html
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References for Bariopharmacoalumite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2010) CNMNC Newsletter No 6, New minerals and nomenclature modifications approved in 2010. Mineralogical Magazine, 74 (6) 941-942 doi:10.1180/minmag.2010.074.6.941
Localities for Bariopharmacoalumite
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 | |
| Carinthia II (2017) |
Chile | |
| Mills et al. (2011) |
France | |
| Gourault et al. (2021) |
| Jean-Marie Claude collection +3 other references |
| Georges Favreau collection (article in preparation) | |
| Georges Favreau collection (article in preparation) | |
Germany | |
| Wittern (2001) |
| American Mineralogist: 70: 214 +1 other reference |
| Lapis 30 (7/8) |
Italy | |
| Mills et al. (2011) +1 other reference |
| LIBVRNA N°2 September 2021 |
Slovakia | |
| Števko M. (2022) |
USA | |
| Kampf et al. (2018) |
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North mine, Cap Garonne Mine, Le Pradet, Toulon, Var, Provence-Alpes-Côte d'Azur, France