Where it forms, where it's found
- Type locality
- 67 m level
- Hagendorf South Pegmatite
- Hagendorf
- Waidhaus
- Neustadt an der Waldnaab District
- Upper Palatinate
- Bavaria
- Germany
49.6503°, 12.4597°
1recorded occurrences
Physical
Optical
- Optical type
- Biaxial (-) · 2V calc = 68°
- Refractive index
- 1.675 – 1.691
- Surface relief
- High
- Principal indices
- nα 1.675 · nβ 1.686 · nγ 1.691
Δ = 0Δmax
PPLpleochroism per grain
XPLindependent extinctions · rotate the stage
PPLpleochroism only · colour blends on rotation
XPLinterference colour · extinct every 90°
Retardation160 nm
Order1st order
XPL colour
Crystallography
- Space group
- P2/a
- Cell parameters
- a = 15.054(1) Å · b = 7.1890(6) Å · c = 10.030(2) Å
- Cell angles
- β = 111.273(7) °
- Ratio a:b:c
- 1 : 0.478 : 0.666
- Type-locality form
Thin yellow crusts and brown epitactic growths on altered phosphophyllite, comprised of lath-like crystals in orthogonal orientation, up to 100 μm long. The crystals contain intergrowths of jahnsite-(CaMnZn) and jahnsite-(CaMnMn) on a scale of 50 μm.
Chemical composition
Synonyms
- IMA2019-073
- Jahnsiet-(CaMnZn)
In other languages
- German
- IMA 2019-073 · Jahnsit-(CaMnZn)
- Italian
- Jahnsite- · Jahnsite-(CaMnZn)
Classification
Strunz
10th ed.8.DH.15
- 8Phosphates, Arsenates, VanadatesClass
- 8.DPhosphates, etc. with additional anions, with H2ODivision
- 8.DHWith large and medium-sized cations, (OH, etc.):RO4 < 1:1Group
- 8.DH.15Jahnsite-(CaMnZn)Species
Group, growth & confusion
Jahnsite-(CaFeMg)CaFe2+Mg2Fe3+2(PO4)4(OH)2 · 8H2OMineral—- Jahnsite-(CaMnFe)CaMn2+Fe2+2Fe3+2(PO4)4(OH)2 · 8H2OMineral—
Jahnsite-(CaMnMg)CaMn2+Mg2Fe3+2(PO4)4(OH)2 · 8H2OMineral—- Jahnsite-(CaMnMn)CaMn2+Mn2+2Fe3+2(PO4)4(OH)2 · 8H2OMineral—
- Jahnsite-(MnMnFe)Mn2+Mn2+Fe2+2Fe3+2(PO4)4(OH)2 · 8H2OMineral—
Jahnsite-(MnMnMg)Mn2+Mn2+Mg2Fe3+2(PO4)4(OH)2 · 8H2OMineral—- Jahnsite-(MnMnMn)Mn2+Mn2+Mn2+2Fe3+2(PO4)4(OH)2 · 8H2OMineral—
Jahnsite-(MnMnZn)Mn2+Mn2+Zn2Fe3+2(PO4)4(OH)2 · 8H2OMineral—- Jahnsite-(NaFeMg)NaFe3+Mg2Fe3+2(PO4)4(OH)2 · 8H2OMineral—
- Jahnsite-(NaMnMg)(Na,Ca)(Mn2+,Fe3+)(Mg,Fe3+)2Fe3+2(PO4)4(OH)2(H2O)8Mineral—
Literature, links & citation
Citations
- 2019Pekov, I. V., Zubkova, N. V., Agakhanov, A. A., Belakovskiy, D. I., Vigasina, M. F., Yapaskurt, V. O., Britvin, S. N., Turchkova, A. G., Sidorov, E. G., Pushcharovsky, D. Y. (2019) CNMNC Newsletter No. 52, New minerals and nomenclature modifications approved in 2019. Mineralogical Magazine, 83 (6) 887-893 doi:10.1180/mgm.2019.73DOI: 10.1180/mgm.2019.73
- 2020Grey, Ian E., Keck, Erich, Kampf, Anthony R., MacRae, Colin M., Cashion, John D., Glenn, A. Matt (2020) Jahnsite-(CaMnZn) from the Hagendorf-Süd pegmatite, Oberpfalz, Bavaria, and structural flexibility of jahnsite-group minerals. Mineralogical Magazine, 84 (4) 547-553 doi:10.1180/mgm.2020.40DOI: 10.1180/mgm.2020.40
- 2021(2021) Jahnsite-(CaMnZn). Handbook of Mineralogy. Mineralogical Society of America
Cite this entry
@misc{mineral2026,
author = {Mineral Index editorial board},
title = {Jahnsite-(CaMnZn) — Mineral Index},
year = {2026},
url = {https://mineralindex.org/minerals/jahnsite-camnzn-54036},
note = {Accessed 2026-05-11}
}