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Schmidite

A valid IMA mineral species
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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.

Unique IdentifiersHide

Mindat ID:
51842
Long-form identifier:
mindat:1:1:51842:6
GUID
(UUID V4):
bd4662d0-09d0-4c62-a5e0-4c020525cebb

IMA Classification of SchmiditeHide

Classification of SchmiditeHide

8.DB.07

8 : PHOSPHATES, ARSENATES, VANADATES
D : Phosphates, etc. with additional anions, with H2O
B : With only medium-sized cations, (OH, etc.):RO4< 1:1

Mineral SymbolsHide

As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

SymbolSourceReference
SmdIMA–CNMNCWarr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Physical Properties of SchmiditeHide

Colour:
orange-brown, red, copper-red
Comment:
Not reported
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 = 1.640 - 1.644 nβ = 1.679 - 1.681 nγ = 1.733 - 1.737
2V:
Measured: 81.4° (8), Calculated: 81.8°
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
Dispersion:
None
Pleochroism:
Visible
Comments:
X = light brown, Y = medium brown, Z = dark red brown
Absorption X < Y < Z
Comments:
Orientation X = b, Y = c, Z = a

Chemistry of SchmiditeHide

Mindat Formula:
[Zn2(Fe3+,Mn2+)2Fe3+(PO4)3(OH)3(H2O)6] · 2H2O

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.

Geological EnvironmentHide

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)

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Schmidite associated with RockbridgeiteFe2+Fe3+4(PO4)3(OH)5

Related Minerals - Strunz-mindat GroupingHide

8.DB.ArangasiteAl2F(PO4)(SO4) · 9H2O Mon. 2/m : P2/b
8.DB.Camaronesite[Fe3+(H2O)2(PO3OH)]2(SO4) · 1-2H2OTrig. 3 2 : R3 2
8.DB.HösliteFe3+3(VO4)2(SO4)(OH)(H2O)4 · 3H2OMon. 2/m : P21/b
8.DB.05DiadochiteFe3+2(PO4)(SO4)(OH) · 6H2OAmor.
8.DB.05Pitticite(Fe, AsO4, H2O) (?)Amor.
8.DB.05DestineziteFe3+2(PO4)(SO4)(OH) · 6H2OTric. 1 : P1
8.DB.07WilhelmgümbeliteZnFe2+Fe3+3(PO4)3(OH)4(H2O)5 · 2H2OOrth. mmm (2/m 2/m 2/m)
8.DB.07WildenaueriteZn(Fe3+,Mn2+)2MnFe3+(PO4)3(OH)3(H2O)6 · 2H2OOrth. mmm (2/m 2/m 2/m) : Pbam
8.DB.10VashegyiteAl11(PO4)9(OH)6 · 38H2OOrth. mmm (2/m 2/m 2/m)
8.DB.15SchooneriteZnMn2+Fe2+2Fe3+(PO4)3(OH)2 · 9H2OOrth. mmm (2/m 2/m 2/m) : Pbam
8.DB.20SinkankasiteMn2+Al(PO3OH)2(OH) · 6H2OTric. 1 : P1
8.DB.25MitryaevaiteAl6(PO4)((P,S)O3(OH,O))2F2(OH)2 · 14.5H2OTric. 1 : P1
8.DB.30SanjuaniteAl2(PO4)(SO4)(OH) · 9H2OTric.
8.DB.35SarmientiteFe3+2(AsO4)(SO4)(OH) · 5H2OMon. 2/m : P21/b
8.DB.40BukovskýiteFe3+2(AsO4)(SO4)(OH) · 9H2OTric. 1 : P1
8.DB.40FlurliteZn3Mn2+Fe3+(PO4)3(OH)2 · 9H2OMon. 2/m : P21/m
8.DB.40ManganflurliteZnMn2+3Fe3+(PO4)3(OH)2(H2O)7 · 2H2OMon. 2/m : P21/m
8.DB.42BohuslaviteFe3+4(PO4)3(SO4)(OH) · nH2OTric. 1 : P1
8.DB.45ZýkaiteFe3+4(AsO4)3(SO4)(OH) · 15H2OOrth. 2 2 2 : P2 2 2
8.DB.47LapeyreiteCu3O[AsO3(OH)]2 · 0.75H2OMon. 2/m : B2/m
8.DB.50GiniiteFe2+Fe3+4(PO4)3(OH)5 · 2H2OMon. 2/m : P2/b
8.DB.50RossiantoniteAl3(PO4)(SO4)2(OH)2(H2O)14Tric. 1 : P1
8.DB.52ArctowskiteAl9(PO4)8(OH)3 · 27H2OOrth.
8.DB.55Sasaite(Al,Fe3+)14(PO4)11(SO4)(OH)7 · 83H2OOrth.
8.DB.60McauslaniteFe3Al2(PO4)3(PO3OH)F · 18H2OTric.
8.DB.65GoldquarryiteCuCd2Al3(PO4)4F2(H2O,F)2 · 10H2OTric. 1 : P1
8.DB.70BirchiteCd2Cu2(PO4)2(SO4) · 5H2OOrth. mmm (2/m 2/m 2/m) : Pnma
8.DB.75BraithwaiteiteNaCu5(Ti4+Sb5+)(AsO4)4(HAsO4)2O2 · 8H2OTric. 1 : P1

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.

Internet Links for SchmiditeHide

References for SchmiditeHide

Reference List:

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 references and 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 (e.g. 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
 
Mineral and/or Locality  
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