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Hydroniumpharmacoalumite

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Formula:
(H3O)Al4(AsO4)3(OH)4·4.5H2O
Colour:
colorless to white
Lustre:
Adamantine, Vitreous
Hardness:
Specific Gravity:
2.486 (Calculated)
Crystal System:
Isometric
Name:
Hydronium analog of pharmacoalumite
This page provides mineralogical data about Hydroniumpharmacoalumite.


Hide all sections | Show all sections

Classification of HydroniumpharmacoalumiteHide

Approved

Physical Properties of HydroniumpharmacoalumiteHide

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)

Chemical Properties of HydroniumpharmacoalumiteHide

Formula:
(H3O)Al4(AsO4)3(OH)4·4.5H2O
IMA Formula:
(H3O)Al4(AsO4)3(OH)4 · 4.5H2O

Crystallography of HydroniumpharmacoalumiteHide

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 DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
7.619Å(100)
4.444Å(13)
3.851Å(26)
3.448Å(8)
2.728Å(16)
2.439Å(10)
2.329Å(10)
1.730Å(8)
Comments:
From Type Description.

Type Occurrence of HydroniumpharmacoalumiteHide

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 HydroniumpharmacoalumiteHide

Relationship of Hydroniumpharmacoalumite to other SpeciesHide

Other Members of this group:
BariopharmacoalumiteBa0.5Al4(AsO4)3(OH)4 · 4H2OIso. 4 3m : P4 3m
NatropharmacoalumiteNaAl4(AsO4)3(OH)4 · 4H2OIso. 4 3m : P4 3m
PharmacoalumiteKAl4(AsO4)3(OH)4 · 6.5H2OIso. 4 3m : P4 3m

Other InformationHide

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 HydroniumpharmacoalumiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hochleitner, R., Fehr, K.T., Kaliwoda, M., Günther, A., Schmahl, W.W. and Park, S. (2013) Hydroniumpharmacoalumite, IMA 2012-050. CNMNC Newsletter No. 16, August 2013, page 2699; Mineralogical Magazine, 77, 2695-2709.
Hochleitner, R.; Fehr, K.T.; Kaliwoda. M.; Günther, A.; Rewitzer, C.; Schmahl, W.W.; Park, S. (2015): Hydroniumpharmacoalumite, (H3O)Al4[(OH)4(AsO4)3] · 4-5 H2O, a new mineral of the pharmacosiderite supergroup from Rodalquilar, Spain. Neues Jahrbuch für Mineralogie - Abhandlungen (J. Mineral. Geochem.) 192, 169-176.

Internet Links for HydroniumpharmacoalumiteHide

Localities for HydroniumpharmacoalumiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
Spain (TL)
 
  • Andalusia
    • Almería
      • Níjar
        • Rodalquilar
Hochleitner, R., Fehr, K.T., Kaliwoda, M., Günther, A., Schmahl, W.W. and Park, S. (2013) Hydroniumpharmacoalumite, IMA 2012-050. CNMNC Newsletter No. 16, August 2013, page 2699; Mineralogical Magazine, 77, 2695-2709; Hochleitner, R.; Fehr, K.T.; Kaliwoda. M.; Günther, A.; Rewitzer, C.; Schmahl, W.W.; Park, S. (2015): Hydroniumpharmacoalumite, (H3O)Al4[(OH)4(AsO4)3] · 4-5 H2O, a new mineral of the pharmacosiderite supergroup from Rodalquilar, Spain. Neues Jahrbuch für Mineralogie - Abhandlungen (J. Mineral. Geochem.) 192, 169-176.
 
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