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Zincostrunzite

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About ZincostrunziteHide

Formula:
ZnFe3+2(PO4)2(OH)2·6.5H2O
Colour:
Light brownish yellow; silvery white
Lustre:
Vitreous, Silky
Hardness:
Specific Gravity:
2.66
Crystal System:
Triclinic
Member of:
Chemically related to steinmetzite, zincoberaunite, and 'UKI-2006-(PO:FeHZn)', the latter being a lower hydrate equivalent of the species. Also chemically similar to plimerite, wilhelmgümbelite, zinclipscombite, and phosphophyllite.


Classification of ZincostrunziteHide

Approved
Approval Year:
2016
First Published:
2017

Physical Properties of ZincostrunziteHide

Vitreous, Silky
Colour:
Light brownish yellow; silvery white
Streak:
White
Hardness:
2½ on Mohs scale
Tenacity:
Brittle
Cleavage:
Perfect
At least one perfect cleavage parallel to [001]; probably either {1−10} or {100}
Fracture:
Splintery
Density:
2.66 g/cm3 (Measured)    

Optical Data of ZincostrunziteHide

Type:
Biaxial (-)
RI values:
nα = 1.620(2) nβ = 1.672(2) nγ = 1.720(2)
2V:
Measured: 89.5° (5), Calculated: 85.1°
Max Birefringence:
δ = 0.100
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High
Pleochroism:
Visible
Comments:
X nearly colourless, Y light brownish yellow, Z darker brownish yellow (X< Y< Z).

Chemical Properties of ZincostrunziteHide

Formula:
ZnFe3+2(PO4)2(OH)2·6.5H2O
IMA Formula:
ZnFe3+2(PO4)2(OH)2 · 6.5H2O

Chemical AnalysisHide

Empirical formulas:
Sample IDEmpirical Formula
1 (Zn0.74Mn2+0.230.97Fe3+1.99(PO4)2(OH)2·6.5H2O
2(Zn0.93Mn2+0.081.01(Fe3+1.84Mn2+0.192.03(PO4)2(OH)2·6.5H2O

Crystallography of ZincostrunziteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 10.1736(6) Å, b = 9.7999(5) Å, c = 7.3296(2) Å
α = 91.325(4)°, β = 97.895(6)°, γ = 116.948(4)°
Ratio:
a:b:c = 1.038 : 1 : 0.748
Unit Cell V:
642.22 ų
Z:
2
Morphology:
Elongated on [001] with the prism forms {010} and {1−10} and poorly formed terminations, probably {001}.
Twinning:
Twinning is ubiquitous by 180° rotation on [0 1 0] with the composition plane {1−20}

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
8.87(100)
5.32(95)
4.457(30)
4.287(41)
3.310(29)
3.220(75)
1.912(25)
1.622(32)

Occurrences of ZincostrunziteHide

Paragenetic Mode(s):

Type Occurrence of ZincostrunziteHide

General Appearance of Type Material:
Sitio do Castelo: as prisms up to 2 mm long
Hagendorf: the mineral makes up portions of needles that are up to about 5 mm long.
Place of Conservation of Type Material:
Cotype material is deposited in the collections of the Mineral Sciences Department, Natural History Museum of Los Angeles County, 900 Exposition Boulevard, Los Angeles, California 90007, USA, catalogue numbers 65646 and 65647 (Sitio do Castelo), and the
Empirical Formula of Type Material:
(Zn0.93Mn2+0.081.01(Fe3+1.84Mn2+0.192.03(PO4)2(OH)2·6.5H2O
Geological Setting of Type Material:
Pegmatite
Reference:
Kampf, A.R., Grey, I.E., Alves, P., Mills, S.J., Nash, B.P., MacRae, C.M., Keck, E. (2017): Zincostrunzite, ZnFe3+2(PO4)2(OH)2.6.5H2O, a new mineral from the Sitio do Castelo mine, Portugal, and the Hagendorf-Sud pegmatite, Germany. European Journal of Mineralogy, 29, 315-322.

Synonyms of ZincostrunziteHide

Relationship of Zincostrunzite to other SpeciesHide

Member of:
Other Members of this group:
FerristrunziteFe3+Fe3+2(PO4)2(OH)3 · 5H2OTric.
FerrostrunziteFe2+Fe3+2(PO4)2(OH)2 · 6H2OTric.
StrunziteMn2+Fe3+2(PO4)2(OH)2 · 6H2OTric. 1 : P1

Other InformationHide

Notes:
At room temperature, the mineral is slowly soluble in dilute HCl and rapidly soluble in concentrated HCl.
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 ZincostrunziteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Kampf, A.R., Grey, I.E., Alves, P., Mills, S.J., Nash, B.P., MacRae, C.M. and Keck, E. (2016) Zincostrunzite, IMA 2016023. CNMNC Newsletter No.32, August2016, page 918; Mineralogical Magazine, 80:915– 922.
Kampf, A.R., Grey, I.E., Alves, P., Mills, S.J., Nash, B.P., MacRae, C.M., Keck, E. (2017): Zincostrunzite, ZnFe3+2(PO4)2(OH)2.6.5H2O, a new mineral from the Sitio do Castelo mine, Portugal, and the Hagendorf-Sud pegmatite, Germany. European Journal of Mineralogy, 29. 315-322.

Internet Links for ZincostrunziteHide

Localities for ZincostrunziteHide

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.
Germany (TL)
 
  • Bavaria
    • Upper Palatinate
      • Waidhaus
        • Hagendorf
Kampf, A.R., Grey, I.E., Alves, P., Mills, S.J., Nash, B.P., MacRae, C.M. and Keck, E. (2016) Zincostrunzite, IMA 2016023. CNMNC Newsletter No.32, August2016, page 918; Mineralogical Magazine, 80:915– 922; Kampf, A.R., Grey, I.E., Alves, P., Mills, S.J., Nash, B.P., MacRae, C.M., Keck, E. (2017): Zincostrunzite, ZnFe3+2(PO4)2(OH)2.6.5H2O, a new mineral from the Sitio do Castelo mine, Portugal, and the Hagendorf-Sud pegmatite, Germany. European Journal of Mineralogy, 29, 315-322.
Portugal (TL)
 
  • Guarda District
    • Gouveia
      • Folgosinho
Kampf, A.R., Grey, I.E., Alves, P., Mills, S.J., Nash, B.P., MacRae, C.M. and Keck, E. (2016) Zincostrunzite, IMA 2016023. CNMNC Newsletter No.32, August2016, page 918; Mineralogical Magazine, 80:915– 922.; Kampf, A.R., Grey, I.E., Alves, P., Mills, S.J., Nash, B.P., MacRae, C.M., Keck, E. (2017): Zincostrunzite, ZnFe3+2(PO4)2(OH)2.6.5H2O, a new mineral from the Sitio do Castelo mine, Portugal, and the Hagendorf-Sud pegmatite, Germany. European Journal of Mineralogy, 29, 315-322.
Mineral and/or Locality  
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