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Steinmetzite

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About SteinmetziteHide

Formula:
Zn2Fe3+(PO4)2(OH)·3H2O
Specific Gravity:
2.96 (Calculated)
Crystal System:
Triclinic
Structurally and chemically related to phosphophyllite. Also chemically similar to wilhelmgümbelite, zincoberaunite, 'UKI-2006-(PO:FeHZn)' (hydrated phases), plimerite and zinclipscombite (basic anhydrous salts).


Classification of SteinmetziteHide

Approved
Approval Year:
2015
First Published:
2017

Physical Properties of SteinmetziteHide

Density:
2.96 g/cm3 (Calculated)

Optical Data of SteinmetziteHide

Type:
Biaxial (-)
RI values:
nα = 1.642(2) nβ = 1.659 nγ = 1.660(2)
2V:
Measured: 27° (1)
Max Birefringence:
δ = 0.018
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Moderate
Comments:
shades of pale brown (Y > X ≈ Z)
Comments:
β is calculated

Chemical Properties of SteinmetziteHide

Formula:
Zn2Fe3+(PO4)2(OH)·3H2O
IMA Formula:
Zn2Fe3+(PO4)2(OH) · 3H2O
Common Impurities:
Mn(II)

Crystallography of SteinmetziteHide

Crystal System:
Triclinic
Class (H-M):
1 - Pinacoidal
Space Group:
P1
Cell Parameters:
a = 10.438(2) Å, b = 5.102(1) Å, c = 10.546(2) Å
α = 91.37(2)°, β = 115.93(2)°, γ = 94.20(2)°
Ratio:
a:b:c = 2.046 : 1 : 2.067
Unit Cell V:
502.7 ų
Z:
2

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
9.313(65)
5.077(38)
4.726(47)
4.657(100)
3.365(55)
3.071(54)
2.735(48)
2.539(39)
Comments:
From Type Description.

Occurrences of SteinmetziteHide

Paragenetic Mode(s):
•  Oxidation

Type Occurrence of SteinmetziteHide

General Appearance of Type Material:
lamellae, up to ca. 50 μm in maximum dimension and a few μm thick, flattened on {010} and elongated on [001]; the pseudomorphoses, sub-mm to 1 cm in length, are milky and opaque in appearance and often have a glazed yellow to orange weathering rind
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Museum Victoria, Melbourne, Australia, registration number M53510
Geological Setting of Type Material:
product of phosphophyllite alteration in a highly oxidized zone of the Cornelia mine (oxidation of Fe and partial replacement of Zn by Fe)
Associated Minerals at Type Locality:

Synonyms of SteinmetziteHide

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 SteinmetziteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Grey, I.E., Keck, E., Kampf, A.R., Mumme, W.G., MacRae, C.M., Gable, R.W., Glenn, A.M. and Davidson, C.J. (2015) Steinmetzite, IMA 2015-081. CNMNC Newsletter No. 28, December 2015, page 1863; Mineralogical Magazine, 79, 1859–1864.
Grey, I., Keck, E., Kampf, A.R., Mumme, W.G., Macrae, C.M., Gable, R.W., Glenn, A.M., Davidson, C.J. (2017) Steinmetzite, Zn2Fe3+(PO4)2(OH)·3H2O, a new mineral formed from alteration of phosphophyllite at the Hagendorf Süd pegmatite, Bavaria. Mineralogical Magazine: 81: 329–338.

Internet Links for SteinmetziteHide

Localities for SteinmetziteHide

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
Grey, I.E., Keck, E., Kampf, A.R., Mumme, W.G., MacRae, C.M., Gable, R.W., Glenn, A.M. and Davidson, C.J. (2015) Steinmetzite, IMA 2015-081. CNMNC Newsletter No. 28, December 2015, page 1863; Mineralogical Magazine, 79, 1859–1864.
USA
 
  • North Carolina
    • Cleveland Co.
      • Kings Mountain District
A. Kampf 2-2018
Mineral and/or Locality  
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