Hydroniumpharmacoalumite
A valid IMA mineral species
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About Hydroniumpharmacoalumite
Formula:
(H3O)Al4(AsO4)3(OH)4 · 4.5H2O
Colour:
colorless to white
Lustre:
Adamantine, Vitreous
Hardness:
2½
Specific Gravity:
2.486 (Calculated)
Crystal System:
Isometric
Member of:
Name:
Hydronium analog of pharmacoalumite
This page provides mineralogical data about Hydroniumpharmacoalumite.
Unique Identifiers
Mindat ID:
43861
Long-form identifier:
mindat:1:1:43861:6
GUID
(UUID V4):
(UUID V4):
ec8c73fa-3521-4bf1-adf0-48017cfc38c6
IMA Classification of Hydroniumpharmacoalumite
Approved
Classification of Hydroniumpharmacoalumite
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
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 |
|---|---|---|
| Hpal | 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 Hydroniumpharmacoalumite
Adamantine, Vitreous
Transparency:
Transparent
Colour:
colorless to white
Streak:
white
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
2.486 g/cm3 (Calculated)
Chemistry of Hydroniumpharmacoalumite
Mindat Formula:
(H3O)Al4(AsO4)3(OH)4 · 4.5H2O
Elements listed:
Crystallography of Hydroniumpharmacoalumite
Crystal System:
Isometric
Class (H-M):
4 3m - Hextetrahedral
Space Group:
P4 3m
Cell Parameters:
a = 7.7379(1) Å
Unit Cell V:
463.31 ų (Calculated from Unit Cell)
Z:
1
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 7.619 Å | (100) |
| 4.444 Å | (13) |
| 3.851 Å | (26) |
| 3.448 Å | (8) |
| 2.728 Å | (16) |
| 2.439 Å | (10) |
| 2.329 Å | (10) |
| 1.730 Å | (8) |
Comments:
From Type Description.
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 Hydroniumpharmacoalumite
General Appearance of Type Material:
intergrown cubic crystals to 0.1mm
Place of Conservation of Type Material:
The holotype is preserved in the Mineralogical State Collection, Museum Reich der Kristalle, München, Germany, catalogue number MSM 33887
Geological Setting of Type Material:
Secondary mineral of an alunitised gold-bearing volcanic rock
Associated Minerals at Type Locality:
Synonyms of Hydroniumpharmacoalumite
Relationship of Hydroniumpharmacoalumite to other Species
Member of:
Other Members of this group:
| Bariopharmacoalumite | Ba0.5Al4(AsO4)3(OH)4 · 4H2O | 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 |
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 | Bariopharmacoalumite | Ba0.5Al4(AsO4)3(OH)4 · 4H2O |
| 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 Hydroniumpharmacoalumite
mindat.org URL:
https://www.mindat.org/min-43861.html
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References for Hydroniumpharmacoalumite
Localities for Hydroniumpharmacoalumite
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.
Spain (TL) | |
|
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María Josefa Mine, Rodalquilar, Níjar, Almería, Andalusia, Spain