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Alumopharmacosiderite

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Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA
© 2008, JGW

Show Alumopharmacosiderite Photos (4)
Formula:
KAl
 
4
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 6-7H
 
2
O
System:IsometricColour:White
Name:In allusion to its composition, containing ALUMinium, and its relationship to Pharmacosiderite.


Pharmacosiderite Group.
The Al analogue of pharmacosiderite.

The type material was found on a museum specimen associated with other oxidized arsenates.

Classification of Alumopharmacosiderite

IMA status:Approved 1980
Strunz 8th edition ID:7/D.47-10
Nickel-Strunz 10th (pending) edition ID:8.DK.10

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
Dana 8th edition ID:42.8.1.2

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
8 : (AB)5(XO4)3Zq·xH2O
Hey's CIM Ref.:20.4.3

20 : Arsenates (also arsenates with phosphate, but without other anions)
4 : Arsenates of Group III metals (Al, rare earths)
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Type Occurrence of Alumopharmacosiderite

Type Locality:Guanaco (Huanaco), Santa Catalina, Antofagasta Province, Antofagasta Region, Chile
Place of Conservation of Type Material:U.S. National Museum of Natural History, Washington, D.C., USA: #149527.
Year of Discovery:1981
Associated Minerals at type locality:
SchlossmacheriteQuartzOliveniteMansfielditeCeruleite

Physical Properties of Alumopharmacosiderite

Diaphaneity (Transparency):Translucent
Colour:White
Density (calculated):2.676 g/cm3

Crystallography of Alumopharmacosiderite

Crystal System:Isometric
Class (H-M):4 3m - Hextetrahedral
Space Group:P4 3m
Cell Parameters:a = 7.745Å
Unit Cell Volume:V 464.58 ų (Calculated from Unit Cell)
Z:1
Morphology:Fine-grained polycrystalline aggregates.
X-Ray Powder Diffraction:
d-spacingIntensity
7.77 (100)
2.739 (60)
4.48 (50)
3.16 (50)
3.87 (40)
2.335 (40)
Comments:Values obtained on material from El Guanaco, Chile.

Optical Data of Alumopharmacosiderite

Type:Isotropic
RI values: n = 1.565
Maximum Birefringence:δ = 0.000 - Isotropic minerals have no birefringence
Surface Relief:Low

Chemical Properties of Alumopharmacosiderite

Formula:
KAl
 
4
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 6-7H
 
2
O
Essential elements:Al, As, H, K, O
All elements listed in formula:Al, As, H, K, O

Relationship of Alumopharmacosiderite to other Species

Member of Group:
Pharmacosiderite Group:
Related Minerals - Nickel-Strunz Grouping):

- +
8.DK.Richelsdorfite
Ca
 
2
Cu
 
5
Sb[Cl|(OH)
 
6
|(AsO
 
4
)
 
4
] · 6H
 
2
O
8.DK.10Bariopharmacosiderite
BaFe
3+
4
[(OH)
 
5
|(AsO
 
4
)
 
3
] · 5H
 
2
O
8.DK.10Barium-Alumopharmacosiderite
Ba(Al,Fe
3+
 
)
 
4
[(OH)
 
5
|(AsO
 
4
)
 
3
] · 7H
 
2
O (?)
8.DK.10Pharmacosiderite
KFe
3+
4
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 6-7H
 
2
O
8.DK.10Natropharmacosiderite
(Na,K)Fe
3+
4
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 6-7H
 
2
O
8.DK.10Barium-zinc-alumopharmacosiderite
(Ba,K)
 
0.5
(Zn,Cu)
 
0.5
(Al,Fe)
 
4
(AsO
 
4
)
 
3
·5H
 
2
O
8.DK.15Burangaite
(Na,Ca
 
0.5
)(Fe
2+
 
,Mg)Al
 
5
[(OH,O)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
8.DK.15Dufrénite
Ca
 
0.5
Fe
2+
 
Fe
3+
5
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
8.DK.15Natrodufrénite
NaFe
2+
 
(Fe
3+
 
,Al)
 
5
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
8.DK.15Matioliite
NaMgAl
 
5
[(OH)
 
3
|(PO
 
4
)
 
2
]
 
2
 · 2H
 
2
O
8.DK.15IMA2008-056
NaMn
2+
 
Fe
3+
5
(PO
 
4
)
 
4
(OH)
 
6
·2H
 
2
O
8.DK.20Kidwellite
NaFe
3+
9
[(OH)
 
5
|(PO
 
4
)
 
3
]
 
2
 · 5H
 
2
O
8.DK.25Bleasdaleite
(Ca,Fe
3+
 
)
 
2
Cu
 
5
(Bi,Cu)[(H
 
2
O,OH,Cl)
 
13
|(PO
 
4
)
 
4
]
8.DK.30Matulaite
CaAl
 
18
[(OH)
 
5
|(PO
 
4
)
 
3
]
 
4
 · 28H
 
2
O
8.DK.35Krasnovite
Ba(Al,Mg)[(OH)
 
2
|(PO
 
4
,CO
 
3
)] · H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
20.4.1Mansfieldite
AlAsO
 
4
·2H
 
2
O
20.4.2Bulachite
Al
 
2
[(OH)
 
3
|AsO
 
4
] · 3H
 
2
O
20.4.4Luetheite
Cu
 
2
Al
 
2
[(OH)
 
2
|AsO
 
4
]
 
2
20.4.5Arsenogoyazite
SrAl
 
3
[(OH)
 
5
|(AsO
 
4
)
 
2
] · H
 
2
O
20.4.6Arsenocrandallite
(Ca,Sr)Al
 
3
[(OH)
 
5
|(AsO
 
4
,PO
 
4
)
 
2
] · H
 
2
O
20.4.7Arsenoflorencite-(Ce)
CeAl
 
3
[(OH)
 
6
|(AsO
 
4
)
 
2
]
20.4.8Arsenoflorencite-(La)
LaAl
 
3
[(OH)
 
6
|(AsO
 
4
)
 
2
]
20.4.9Arsenoflorencite-(Nd)
NdAl
 
3
[(OH)
 
6
|(AsO
 
4
)
 
2
]
20.4.10Gerdtremmelite
(Zn,Fe)(Al,Fe)
 
2
AsO
 
4
(OH)
 
5
20.4.11Gasparite-(Ce)
(Ce,REE)AsO
 
4
20.4.12Chernovite-(Y)
YAsO
 
4
20.4.13Agardite-(Y)
(Y,Ca)Cu
 
6
[(OH)
 
6
|(AsO
 
4
,HAsO
 
4
)|(AsO
 
4
)
 
2
] · 3H
 
2
O
20.4.14Agardite-(La)
(La,Ce)Cu
 
6
[(OH)
 
6
|(AsO
 
4
)
 
3
] · 3H
 
2
O
20.4.15Goudeyite
(Al,Y)Cu
 
6
[(OH)
 
6
|(AsO
 
4
)
 
3
] · 3H
 
2
O
20.4.16Retzian-(Ce)
Mn
2+
2
Ce(AsO
 
4
)(OH)
 
4
20.4.17Retzian-(La)
(Mn
2+
 
,Mg)
 
2
(La,Ce,Nd)(AsO
 
4
)(OH)
 
4
20.4.18Retzian-(Nd)
Mn
2+
2
(Nd,Ce,La)(AsO
 
4
)(OH)
 
4

Other Names for Alumopharmacosiderite

Synonyms:
AlumopharmacoliteIMA1980-002
Other Languages:
German:Alumofarmacosiderit
Alumopharmacolit
Alumopharmacosiderit
Italian:Alumofarmacosiderite
Spanish:Alumofarmacosiderita
Alumopharmacolita
Alumopharmacosiderita

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Alumopharmacosiderite

Reference List:Schmetzer, K.; Horn, W.; Bank, H. (1981): Alumopharmacosiderite, KAl4[(OH)4|(AsO4)3].6.5 H2O, a new mineral. Neues Jahrbuch für Mineralogie, Monatshefte 1981, 97-102. (in German).

American Mineralogist (1981): 66: 1099.

Internet Links for Alumopharmacosiderite

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    Localities for Alumopharmacosiderite

    Hide Locality List
    The 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.
    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Chile
     
    • Antofagasta Region
      • Antofagasta Province
        • Santa Catalina
    		Neues Jahrb.,Mh.(1981) 97-102
    No reference listed
    • Atacama Region
      • Copiapó Province
        • Tierra Amarilla
          • Pampa Larga district
    		Jesse Crawford collection (mindat foto)
    France
     
    • Alsace
      • Bas-Rhin
        • Villé Valley
    		Wittern, Journée: "Mineralien finden in den Vogesen", von Loga (Cologne), 1997
    • Provence-Alpes-Côte d'Azur
      • Var
        • Pradet
    		No reference listed
    Germany
     
    • Saxony
      • Erzgebirge
        • Schneeberg District
    		Lapis 30(7/8):67-68 (2005)
    Morocco
     
    • Souss-Massa-Draâ Region
      • Ouarzazate Province
        • Tazenakht
          • Bou Azzer District
            • Aghbar
    		Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
            • Bou Azzer
    		N. Meisser, J. Brugger (2006): "Bouazzerit und Maghrebit, zwei neue Arsenatmineralien aus dem Revier Bou Azzer, Marokko", Lapis 31(7/8), 69-71
            • Oumlil
    		Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
            • Tamdrost
    		Favreau, G. and Dietrich, J. E. (2006). Die Mineralien von Bou Azzer. Lapis 31(7/8), 27-68
    Spain
     
    • Andalusia
      • Almería
        • Níjar
          • Rodalquilar
    		PXRD-confirmed 9.2009 C. Rewitzer collection
    USA
     
    • California
      • Sierra Co.
        • Antelope Valley
          • Loyalton
    		Mineralogical Record 24: 381
    Mineral and/or Locality
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