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Plumbopharmacosiderite

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Formula:
Pb0.5Fe3+4(AsO4)3(OH)4·5H2O
Colour:
Pale green to yellowish-green
Lustre:
Vitreous, Resinous
Hardness:
2½ - 3
Specific Gravity:
2.89 (Calculated)
Crystal System:
Isometric
Name:
Named for its chemical relationship in the pharmacosiderite group.
One of a few known Pb-Fe arsenate minerals. Compare, e.g., arsenbrackebuschite, carminite, mawbyite, and segnitite.
Found in the dumps of Monte Falò mine, Italy


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Classification of PlumbopharmacosideriteHide

Approved
Approval Year:
2016
First Published:
2018
Approval History:
IMA 2016-109

Physical Properties of PlumbopharmacosideriteHide

Vitreous, Resinous
Transparency:
Transparent
Colour:
Pale green to yellowish-green
Streak:
White
Hardness:
2½ - 3 on Mohs scale
Tenacity:
Brittle
Fracture:
Irregular/Uneven
Density:
2.89 g/cm3 (Calculated)

Optical Data of PlumbopharmacosideriteHide

Type:
Isotropic

Chemical Properties of PlumbopharmacosideriteHide

Formula:
Pb0.5Fe3+4(AsO4)3(OH)4·5H2O
IMA Formula:
Pb0.5Fe3+4(AsO4)3(OH)4 · 5H2O

Crystallography of PlumbopharmacosideriteHide

Crystal System:
Isometric
Class (H-M):
4 3m - Hextetrahedral
Space Group:
P4 3m
Setting:
P4 3m
Cell Parameters:
a = 7.9791(2) Å
Unit Cell V:
508 ų
Z:
1

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.02(100)
5.86(15)
4.56(12)
3.98(18)
3.25(24)
2.830(18)
2.535(12)
1.879(29)
Comments:
From Type Description.

Occurrences of PlumbopharmacosideriteHide

Paragenetic Mode(s):
•  Oxidation

Type Occurrence of PlumbopharmacosideriteHide

General Appearance of Type Material:
Minute cubes up to 50 μm in size.
Place of Conservation of Type Material:
Type material is deposited in the collections of the Laboratoire de Minéralogie, University of Liège, Belgium, collection number 20392
Geological Setting of Type Material:
Surfaces of brittle fissures in a mica schist cross-cut by arsenopyrite veins.
Reference:
Vignola, P., Rotiroti, N., Hatert, F., Dal Bo, F., Gentile, P., Albertini, C., Merlini, M., Risplendente, A., Pavese, A. (2018) Plumbopharmacosiderite, Pb0.5Fe3+4(AsO4)3(OH)4·5H2O, a new mineral species from the Monte Falò Pb-Zn mine near the village of Coiromonte in the Armeno municipality, Novara province, Italy. Canadian Mineralogist: 56: 143-150.

Synonyms of PlumbopharmacosideriteHide

Relationship of Plumbopharmacosiderite to other SpeciesHide

Other Members of this group:
BariopharmacosideriteBa0.5Fe3+4(AsO4)3(OH)4 · 5H2OTet. 4 2m : P4 2m
CaesiumpharmacosideriteCsFe4[(AsO4)3(OH)4]·4H2OIso. 4 3m : P4 3m
Hydroniumpharmacosiderite(H3O)Fe4(AsO4)3(OH)4 · 4H2OIso. 4 3m : P4 3m
Natropharmacosiderite(Na,K)Fe3+4(AsO4)3(OH)4 · 6-7H2OIso. 4 3m : P4 3m
PharmacosideriteKFe3+4(AsO4)3(OH)4 · 6-7H2OIso. 4 3m : P4 3m
StrontiopharmacosideriteSr0.5Fe4[(AsO4)3(OH)4]·4H2O Tet. 4 2m : P4 2m
ThalliumpharmacosideriteTlFe4[(AsO4)3(OH)4]·4H2OIso. 4 3m : F4 3m

Fluorescence of PlumbopharmacosideriteHide

Non-fluorescent under 254 nm (short wave) and 366 nm (long wave) UV light

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 PlumbopharmacosideriteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Vignola, P., Hatert, F., Rotiroti, N., Dal Bo, F., Merlini, M., Risplendente, A., Gentile, P., Albertini, C. and Pavese, A. (2017) Plumbopharmacosiderite, IMA 2016-109. CNMNC Newsletter No. 36, April 2017, page 407; Mineralogical Magazine: 81: 403–409.
Vignola, P., Rotiroti, N., Hatert, F., Dal Bo, F., Gentile, P., Albertini, C., Merlini, M., Risplendente, A., Pavese, A. (2018) Plumbopharmacosiderite, Pb0.5Fe3+4(AsO4)3(OH)4·5H2O, a new mineral species from the Monte Falò Pb-Zn mine near the village of Coiromonte in the Armeno municipality, Novara province, Italy. Canadian Mineralogist: 56: 143-150.

Internet Links for PlumbopharmacosideriteHide

Localities for PlumbopharmacosideriteHide

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.
Italy (TL)
 
  • Piedmont
    • Novara Province
      • Armeno
        • Coiromonte
Vignola, P., Hatert, F., Rotiroti, N., Dal Bo, F., Merlini, M., Risplendente, A., Gentile, P., Albertini, C. and Pavese, A. (2017) Plumbopharmacosiderite, IMA 2016-109. CNMNC Newsletter No. 36, April 2017, page 407; Mineralogical Magazine: 81: 403–409.
Mineral and/or Locality  
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