Where it forms, where it's found
- Type locality
- El Cóndor Mine
- Vinchina Department
- La Rioja Province
- Argentina
15recorded occurrences
Safety & handling
Physical
- Transparency
- Transparent
- Colour
- Bright blue · greenish blue
- Density
- 5.62 g/cm³
Optical
- Optical type
- Biaxial (+)
- Refractive index
- 1.85 – 2.1
- Surface relief
- Very high
- Principal indices
- nα 1.85 – 1.9 · nβ 1.9 – 1.95 · nγ 1.95 – 2.1
Δ = 0Δmax
PPLpleochroism per grain
XPLindependent extinctions · rotate the stage
PPLpleochroism only · colour blends on rotation
XPLinterference colour · extinct every 90°
Retardation1500 nm
Order3rd order
XPL colour
Crystallography
- Space group
- P21/m
- Cell parameters
- a = 9.922(3) Å · b = 5.712(2) Å · c = 9.396(3) Å
- Cell angles
- β = 101.96(3) °
- Ratio a:b:c
- 1 : 0.576 : 0.947
- Z
- 2
Crystal structure
Chemical composition
Synonyms
- Schmiederiet
In other languages
- German
- Schmiederit
- Spanish
- Schmiederita
- Italian
- Schmiederite
Classification
Strunz
10th ed.7.BC.65
- 7SulfatesClass
- 7.BSulfates (selenates, etc.) with additional anions, without H2ODivision
- 7.BCWith medium-sized and large cationsGroup
- 7.BC.65SchmiederiteSpecies
Dana
8th ed.33.01.01.01
- 33Selenates and TelluratesClass
- 33.01(AB)m(XO4)pZqType
- 33.01.01Schmiederite SeriesGroup
- 33.01.01.01SchmiederiteSpecies
CIM
—28.2.2
- 28Selenites, Selenates, Tellurites, and TelluratesClass
- 28.2SelenatesGroup
- 28.2.2SchmiederiteSpecies
Group, growth & confusion
Literature, links & citation
Citations
- 1963Hey, Max H. (1963) Appendix to the second edition of An Index of Mineral Species & Varieties Arranged Chemically, With An Alphabetical Index of Accepted Mineral Names and Synonyms (2nd ed.) British Museum (Natural History)
- 1964Fleischer, M. (1964) New Mineral Names. American Mineralogist, 49 (9-10) 1497-1502
- 1980Mitchell, R. S. (1980) Schmiederite: comments on the name. Mineralogical Magazine, 43 (330) 824 doi:10.1180/minmag.1980.043.330.22 DOI: 10.1180/minmag.1980.043.330.22
- 1980(1980) International Mineralogical Association: Commission on New Minerals and Mineral Names. Mineralogical Magazine, 43 (332) 1053-1055 doi:10.1180/minmag.1980.043.332.17 DOI: 10.1180/minmag.1980.043.332.17
- 1987Effenberger, H. (1987) Crystal structure and chemical formula of schmiederite, Pb2Cu2(OH)4(SeO3)(SeO4), with a comparison to linarite, PbCu(OH)2(SO4) Mineralogy and Petrology, 36 (1) 3-12 doi:10.1007/bf01164365DOI: 10.1007/bf01164365
Cite this entry
@misc{mineral2026,
author = {Mineral Index editorial board},
title = {Schmiederite — Mineral Index},
year = {2026},
url = {https://mineralindex.org/minerals/schmiederite-3569},
note = {Accessed 2026-05-11}
}