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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
(AsO
 
4
)
 
3
(OH)
 
4
 · 6-7H
 
2
O
System:IsometricColour:Light green, dull ...
Hardness:3
Member of:Pharmacosiderite Group > Pharmacosiderite Supergroup
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:42.8.1.2

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
(AsO
 
4
)
 
3
(OH)
 
4
 · 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:Pharmacosiderite Group > Pharmacosiderite Supergroup
Other Members of Group:

- +
Bariopharmacosiderite
Ba
 
0.5
Fe
3+
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 5H
 
2
O
Hydroniumpharmacosiderite
(H
 
3
O)Fe
 
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 4H
 
2
O
Pharmacosiderite
KFe
3+
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 6-7H
 
2
O
Strontiopharmacosiderite
Sr, Fe, As, O, H
Related Minerals - Nickel-Strunz Grouping):

- +
8.DK.Richelsdorfite
Ca
 
2
Cu
 
5
Sb(AsO
 
4
)
 
4
(OH)
 
6
Cl · 6H
 
2
O
8.DK.10Bariopharmacosiderite
Ba
 
0.5
Fe
3+
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 5H
 
2
O
8.DK.10Pharmacosiderite
KFe
3+
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 6-7H
 
2
O
8.DK.10Hydroniumpharmacosiderite
(H
 
3
O)Fe
 
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 4H
 
2
O
8.DK.12Pharmacoalumite
KAl
 
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 6.5H
 
2
O
8.DK.12Natropharmacoalumite
NaAl
 
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 4H
 
2
O
8.DK.12Bariopharmacoalumite
BaAl
 
4
(AsO
 
4
)
 
3
(OH)
 
4
 · 4H
 
2
O
8.DK.15Burangaite
NaFe
2+
 
Al
 
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
8.DK.15Dufrénite
Ca
 
0.5
Fe
2+
 
Fe
3+
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
8.DK.15Natrodufrénite
NaFe
2+
 
(Fe
3+
 
,Al)
 
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
8.DK.15Matioliite
NaMgAl
 
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
8.DK.15Gayite
NaMn
2+
 
Fe
3+
5
(PO
 
4
)
 
4
(OH)
 
6
 · 2H
 
2
O
8.DK.20Kidwellite
NaFe
3+
9
(PO
 
4
)
 
6
(OH)
 
11
 · 3H
 
2
O
8.DK.25Bleasdaleite
(Ca,Fe
3+
 
)
 
2
Cu
 
5
(Bi,Cu)(PO
 
4
)
 
4
(H
 
2
O,OH,Cl)
 
13
8.DK.30Matulaite
(Fe
3+
 
,Al)Al
 
7
(PO
 
4
)
 
4
(PO
 
3
OH)
 
2
(OH)
 
8
(H
 
2
O)
 
8
 · 8H
 
2
O
8.DK.35Krasnovite
Ba(Al,Mg)(PO
 
4
,CO
 
3
)(OH)
 
2
 · H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
20.9.1Angelellite
Fe
3+
4
(AsO
 
4
)
 
2
O
 
3
20.9.2Scorodite
FeAsO
 
4
 · 2H
 
2
O
20.9.3Kaňkite
FeAsO
 
4
 · 3.5H
 
2
O
20.9.4Ferrisymplesite
Fe
3+
3
(AsO
 
4
)
 
2
(OH)
 
3
 · 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
(AsO
 
4
)
 
3
(OH)
 
4
 · 6-7H
 
2
O
20.9.10Kolfanite
Ca
 
2
Fe
3+
2
(AsO
 
4
)
 
3
O
 
2
 · 2H
 
2
O
20.9.11Arseniosiderite
Ca
 
2
Fe
3+
3
(AsO
 
4
)
 
3
O
 
2
 · 3H
 
2
O
20.9.12Yukonite
Ca
 
3
Fe
3+
 
(AsO
 
4
)
 
2
(OH)
 
3
 · 5H
 
2
O
20.9.13Dussertite
BaFe
3+
3
(AsO
 
4
)
 
2
(OH)
 
5
20.9.14Liskeardite
(Al,Fe
3+
 
)
 
3
(AsO
 
4
)(OH)
 
6
 · 5H
 
2
O
20.9.15Mapimite
Zn
 
2
Fe
3+
3
(AsO
 
4
)
 
3
(OH)
 
4
 · 10H
 
2
O
20.9.16Ogdensburgite
Ca
 
2
Fe
3+
4
(Zn,Mn
2+
 
)(AsO
 
4
)
 
4
(OH)
 
6
 · 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.

Hager, S. L., Leverett, P., Williams, P. A., Mills, S. J., Hibbs, D. E., Raudsepp, M., Kampf, A. R. & Birch, W. D. (2010) The single-crystal X-ray structures of bariopharmacosiderite-C, bariopharmacosiderite-Q and natropharmacosiderite. Canadian Mineralogist, 48(6), 1477–1485.

Internet Links for Natropharmacosiderite

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  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Sodium-Pharmacosiderite details from Handbook of Mineralogy (PDF)
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    • Localities for Natropharmacosiderite

    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.
    Hide Locality List
    (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.
    Chile
     
    • Antofagasta Region
      • El Loa Province
        • Calama
          • Chuquicamata District
    		Sample analysed and confirmed by Dr. Stuart Mills, Department of Earth Ciences, Vancouver University, Canada
    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
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