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Schmidite

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About SchmiditeHide

Formula:
[Zn2(Fe3+,Mn2+)2Fe3+(PO4)3(OH)3(H2O)6] · 2H2O
Colour:
orange-brown, red, copper-red
Specific Gravity:
2.89
Crystal System:
Orthorhombic
Name:
Named in honor of Hans Schmid (1925, Wackersdorf, Bavaria - 2013, Greece), mining engineer and geologist. He discovered a very large lithium phosphate occurrence in the Hagendorf Süd pegmatite that was mined from 1950-1955, producing ~1600 tons of lithium ore. In 1955 he published a seminal paper on the textures and structures of pegmatites of the Oberpfälzer.

Classification of SchmiditeHide

Approved
Approval Year:
2017
First Published:
2019

Physical Properties of SchmiditeHide

Colour:
orange-brown, red, copper-red
Tenacity:
Brittle
Cleavage:
Perfect
{010}
Density:
2.89 g/cm3 (Measured)    2.82 g/cm3 (Calculated)

Optical Data of SchmiditeHide

Type:
Biaxial (+)
RI values:
nα = 1.642(2) nβ = 1.680(1) nγ = 1.735(2)
2V:
Measured: 81.4° (8)
Max Birefringence:
δ = 0.093
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
High

Chemical Properties of SchmiditeHide

Formula:
[Zn2(Fe3+,Mn2+)2Fe3+(PO4)3(OH)3(H2O)6] · 2H2O
IMA Formula:
Zn(Fe3+0.5Mn2+0.5)2ZnFe3+(PO4)3(OH)3(H2O)8

Crystallography of SchmiditeHide

Crystal System:
Orthorhombic
Cell Parameters:
a = 11.002(1) Å, b = 25.310(2) Å, c = 6.390(1) Å
Ratio:
a:b:c = 0.435 : 1 : 0.252
Unit Cell V:
1,779.36 ų (Calculated from Unit Cell)
Z:
4
Morphology:
Laths, elongated on [100] and flattened on {010}
Comment:
Spacegroup: Pmab

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
12.73 Å(100)
8.347 Å(39)
5.514 Å(32)
5.424 Å(26)
3.753 Å(32)
3.174 Å(33)
2.761 Å(95)
2.714 Å(26)
Comments:
From Type Description.

Type Occurrence of SchmiditeHide

General Appearance of Type Material:
Radiating sprays of orange-brown to copper-red laths.
Place of Conservation of Type Material:
Type material is deposited in the mineralogical collections of the Museums Victoria, Melbourne, Australia, registration number M53810 and M53811
Geological Setting of Type Material:
Zoned granitic phosphate pegmatite. On/near altered phosphophyllite in a corroded triphylite nodule.
Associated Minerals at Type Locality:
Reference:
Grey, I.E., Keck, E., Kampf, A.R., MacRae, C.M., Glenn, A.M., Cashion, J., Gozukara, Y. (2019) Schmidite and wildenauerite, two new schoonerite-group minerals from the Hagendorf Süd pegmatite, Oberpfalz, Bavaria. Mineralogical Magazine: 83(2): 181-190.

Synonyms of SchmiditeHide

Relationship of Schmidite to other SpeciesHide

Other Members of this group:
SchooneriteZnMn2+Fe2+2Fe3+(PO4)3(OH)2 · 9H2OOrth. mmm (2/m 2/m 2/m) : Pbam
WildenaueriteZn(Fe3+,Mn2+)2MnFe3+(PO4)3(OH)3(H2O)6 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbam
WilhelmgümbeliteZnFe2+Fe3+3(PO4)3(OH)4(H2O)5 · 2H2OOrth. mmm (2/m 2/m 2/m)

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 SchmiditeHide

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., MacRae, C.M., Glenn, A.M., Cashion, J. and Gozukara, Y. (2017) Schmidite, IMA 2017-012. CNMNC Newsletter No. 37, June 2017, page 741; Mineralogical Magazine: 81: 737–742.
Grey, I.E., Keck, E., Kampf, A.R., MacRae, C.M., Glenn, A.M., Cashion, J., Gozukara, Y. (2019) Schmidite and wildenauerite, two new schoonerite-group minerals from the Hagendorf Süd pegmatite, Oberpfalz, Bavaria. Mineralogical Magazine: 83(2): 181-190. https://doi.org/10.1180/mgm.2018.123

Internet Links for SchmiditeHide

Localities for SchmiditeHide

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
      • Neustadt an der Waldnaab District
        • Waidhaus
          • Hagendorf
Grey, I.E., Keck, E., Kampf, A.R., MacRae, C.M., Glenn, A.M., Cashion, J., Gozukara, Y. (2019) Schmidite and wildenauerite, two new schoonerite-group minerals from the Hagendorf Süd pegmatite, Oberpfalz, Bavaria. Mineralogical Magazine: 83(2): 181-190.
 
Mineral and/or Locality  
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