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Natropharmacosiderite

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Gold Hill Mine (Western Utah Mine), Gold Hill, Gold Hill District (Clifton District), Deep Creek Mts, Tooele Co., Utah, USA
© DM 8/08

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Formula:
(Na,K)Fe
3+
4
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 6-7H
 
2
O
System:IsometricColour:Light green, dull ...
Hardness:3
Name:The name reflects its dominant sodium content and relationship to Pharmacosiderite.


Pharmacosiderite Group.

Initially found on a single museum specimen, presumably an oxidation product of arsenopyrite.

Classification of Natropharmacosiderite

IMA status:Approved 1983
Strunz 8th edition ID:7/D.47-15
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:42.8.1.5

42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
8 : (AB)5(XO4)3Zq·xH2O
Hey's CIM Ref.:20.9.8

20 : Arsenates (also arsenates with phosphate, but without other anions)
9 : Arsenates of Fe
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Type Occurrence of Natropharmacosiderite

Type Locality:Marda oxidized zone, Southern Cross, Wheatbelt shire, Goldfields-Esperance region, Western Australia, Australia
Place of Conservation of Type Material:U.S. National Museum of Natural History, Washington, D.C., USA: #146392.
Year of Discovery:1986
Associated Minerals at type locality:
ScoroditeQuartzPharmacosideriteJarositeArsenopyrite
Arseniosiderite

Occurrences of Natropharmacosiderite

Geological Setting:Oxidized zones of arsenic-bearing deposits.

Physical Properties of Natropharmacosiderite

Lustre:Vitreous
Diaphaneity (Transparency):Transparent, Translucent
Colour:Light green, dull orange; pale green in transmitted light.
Hardness (Mohs):3
Tenacity:Brittle
Cleavage:Imperfect/Fair
On {001}, imperfect.
Fracture:Irregular/Uneven
Density (measured):2.79 g/cm3
Density (calculated):2.9 g/cm3
Comment:Calculated density value based on 7H2O.

Crystallography of Natropharmacosiderite

Crystal System:Isometric
Class (H-M):4 3m - Hextetrahedral
Space Group:P4 3m
Cell Parameters:a = 8.012Å
Unit Cell Volume:V 514.31 ų (Calculated from Unit Cell)
Z:1
Morphology:Crystals cubic, occur in aggregates.

Optical Data of Natropharmacosiderite

Type:Isotropic
RI values: n = 1.705
Maximum Birefringence:δ = 0.000 - Isotropic minerals have no birefringence
Surface Relief:High

Chemical Properties of Natropharmacosiderite

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

Relationship of Natropharmacosiderite 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.10Alumopharmacosiderite
KAl
 
4
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 6-7H
 
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.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:

- +
20.9.1Angelellite
Fe
3+
4
[O
 
3
|(AsO
 
4
)
 
2
]
20.9.2Scorodite
Fe
3+
 
AsO
 
4
·2H
 
2
O
20.9.3Kaňkite
FeAsO
 
4
·3.5H
 
2
O
20.9.4Ferrisymplesite
Fe
3+
3
[(OH)
 
3
|(AsO
 
4
)
 
2
] · 5H
 
2
O
20.9.5Kaatialaite
Fe(H
 
2
AsO
 
4
)
 
3
·5H
 
2
O
20.9.6Symplesite
Fe
2+
3
(AsO
 
4
)
 
2
·8H
 
2
O
20.9.7Parasymplesite
Fe
2+
3
(AsO
 
4
)
 
2
·8H
 
2
O
20.9.9Pharmacosiderite
KFe
3+
4
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 6-7H
 
2
O
20.9.10Kolfanite
Ca
 
2
Fe
3+
2
[O
 
2
|(AsO
 
4
)
 
3
] · 2H
 
2
O
20.9.11Arseniosiderite
Ca
 
2
Fe
3+
3
[O
 
2
|(AsO
 
4
)
 
3
] · 3H
 
2
O
20.9.12Yukonite
Ca
 
3
Fe
3+
 
[(OH)
 
3
|(AsO
 
4
)
 
2
] · 5H
 
2
O
20.9.13Dussertite
BaFe
3+
3
[(OH)
 
5
|(AsO
 
4
)
 
2
]
20.9.14Liskeardite
(Al,Fe
3+
 
)
 
3
[(OH)
 
6
|AsO
 
4
] · 5H
 
2
O
20.9.15Mapimite
Zn
 
2
Fe
3+
3
[(OH)
 
4
|(AsO
 
4
)
 
3
] · 10H
 
2
O
20.9.16Ogdensburgite
Ca
 
2
Fe
3+
4
(Zn,Mn
2+
 
)[(OH)
 
3
|(AsO
 
4
)
 
2
]
 
2
 · 6H
 
2
O
20.9.17Walentaite
H(Ca,Mn
2+
 
,Fe
2+
 
)Fe
3+
3
[(AsO
 
4
,PO
 
4
)]
 
4
 · 7H
 
2
O

Other Names for Natropharmacosiderite

Synonyms:
IMA1983-025Na PharmacosideriteSodium-Pharmacosiderite
Other Languages:
German:Na Pharmacosiderit
Natriumpharmakosiderit

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 Natropharmacosiderite

Reference List:Peacor, D. R. and Dunn, P. J. (1985): Sodium-pharmacosiderite, a new analog of pharmacosiderite from Australia and new occurrences of barium-pharmacosiderite. Mineralogical Record, 16, 121-124.

American Mineralogist (1986): 71: 230 (abstract).

Kokinos, M. and W.S. Wise (1993) The Gold Hill mine, Tooele County, Utah. Mineralogical Record, 24, 11–22.

Internet Links for Natropharmacosiderite

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    Localities for Natropharmacosiderite

    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.
    Australia
     
    • South Australia
      • Mt Lofty Ranges
        • South Mt Lofty Ranges
          • Callington
    • Victoria
    		No reference listed
    • Western Australia
      • Goldfields-Esperance region
        • Wheatbelt shire
          • Southern Cross
    		Peacor, D. R. and Dunn, P. J. (1985): Sodium-pharmacosiderite, a new analog of pharmacosiderite from Australia and new occurrences of barium-pharmacosiderite. Mineralogical Record, 16, 121-124.
    South Africa
     
    • Gauteng Province
    		Minerals of South Africa
    Spain
     
    • Murcia
      • Mazarrón-Águilas
        • Pastrana
    		Jordi Fabre
    USA
     
    • Utah
      • Tooele Co.
        • Deep Creek Mts
          • Gold Hill District (Clifton District)
            • Gold Hill
              • Gold Hill Mine (Western Utah Mine)
    		Kokinos, M. and Wise, W.S. (1993), Famous Mineral Localities: the Gold Hill mine, Tooele County, Utah. Mineralogical Record: 24(1): 11-22.
    Min Rec 24:1 pp11-22
    Mineral and/or Locality
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