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About JianshuiiteHide

(Mg,Mn,Ca)Mn3O7 · 3H2O
Brown to brownish-black.
1½ - 2
Crystal System:
Named in 1992 by G. Yan, S. Zhang, M. Zhao, J. Ding, D. Li for Jianshui county which includes the type locality.
In the structure Mg is in the interlayer space, above and below the vacant sites of the Mn-O octahedral sheet. Mg has octahedral coordination, being linked to 3 oxygen atoms of the octahedral layer and 3 ones belonging to interlayer-residing water. Some Ni and maybe Mn2+ may be located at the Mg site.

Classification of JianshuiiteHide


4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
F : Hydroxides (without V or U)
L : Hydroxides with H2O +- (OH); sheets of edge-sharing octahedra

8 : AB3X7

Physical Properties of JianshuiiteHide

Brown to brownish-black.
1½ - 2 on Mohs scale

Chemical Properties of JianshuiiteHide

(Mg,Mn,Ca)Mn3O7 · 3H2O
IMA Formula:
MgMn4+3O7 · 3H2O
Common Impurities:

Crystallography of JianshuiiteHide

Crystal System:
Class (H-M):
3 - Rhombohedral
Space Group:
Cell Parameters:
a = 7.5409(4) Å, c = 20.8079(14) Å
a:c = 1 : 2.759
Unit Cell V:
1024.73 ų

X-Ray Powder DiffractionHide

Powder Diffraction Data:
6.965 Å(100)
5.539 Å(3)
4.086 Å(8)
3.483 Å(11)
2.449 Å(7)
2.396 Å(6)
2.230 Å(23)
Nearly indistinguishable from chalcophanite and

Type Occurrence of JianshuiiteHide

Synonyms of JianshuiiteHide

Other Language Names for JianshuiiteHide


Relationship of Jianshuiite to other SpeciesHide

Other Members of this group:
AuroriteMn2+Mn4+3O7 · 3H2OTrig. 3 : R3
ChalcophaniteZnMn4+3O7 · 3H2OTrig. 3 : R3
ErnienickeliteNiMn3O7 · 3H2OTrig. 3 : R3

Common AssociatesHide

Associated Minerals Based on Photo Data:
1 photo of Jianshuiite associated with DolomiteCaMg(CO3)2
1 photo of Jianshuiite associated with SideriteFeCO3

Related Minerals - Nickel-Strunz GroupingHide

4.FL.TrébeurdeniteFe2+2Fe3+4O2(OH)10CO3 · 3H2OTrig. 3m (3 2/m) : R3m
4.FL.05WoodalliteMg6Cr2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
4.FL.05IowaiteMg6Fe3+2(OH)16Cl2 · 4H2OTrig. 3m (3 2/m) : R3m
4.FL.05JamboriteNi2+1-xCo3+x(OH)2-x(SO4)x · nH2OTrig. 3m (3 2/m) : R3m
4.FL.05MeixneriteMg6Al2(OH)16(OH)2 · 4H2OTrig. 3m (3 2/m) : R3m
4.FL.05MuskoxiteMg7Fe4O13 · 10H2OTrig. 3m (3 2/m)
4.FL.05FougèriteFe2+4Fe3+2(OH)12[CO3] · 3H2OTrig. 3m (3 2/m) : R3m
4.FL.10HydrocalumiteCa4Al2(OH)12(Cl,CO3,OH)2 · 4H2OMon. 2 : P21
4.FL.15KuzeliteCa4Al2(OH)12[SO4] · 6H2OTrig.
4.FL.20AuroriteMn2+Mn4+3O7 · 3H2OTrig. 3 : R3
4.FL.20ChalcophaniteZnMn4+3O7 · 3H2OTrig. 3 : R3
4.FL.20ErnienickeliteNiMn3O7 · 3H2OTrig. 3 : R3
4.FL.25WoodruffiteZn2+x/2(Mn4+1-xMn3+x)O2 · yH2OMon. 2/m : B2/m
4.FL.30Asbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2OHex.
4.FL.35BuseriteNa4Mn14O27 · 21H2O
4.FL.40Ranciéite(Ca,Mn2+)0.2(Mn4+,Mn3+)O2 · 0.6H2OTrig. 3 : P3
4.FL.40Takanelite(Mn,Ca)Mn4O9 · H2OHex.
4.FL.45Birnessite(Na,Ca)0.5(Mn4+,Mn3+)2O4 · 1.5H2OMon. 2/m : B2/m
4.FL.55CianciulliiteMn(Mg,Mn)2Zn2(OH)10 · 2-4H2OMon. 2/m : B2/m
4.FL.60JenseniteCu3[TeO6] · 2H2OMon. 2/m : P21/m
4.FL.65LeisingiteCu2MgTe6+O6 · 6H2OTrig. 3 : P3
4.FL.75CafetiteCaTi2O5 · H2OMon. 2/m : P21/b
4.FL.85DeloryiteCu4(UO2)(MoO4)2(OH)6Mon. 2/m : B2/m

Related Minerals - Dana Grouping (8th Ed.)Hide · 3H2OTrig. 3 : R3 · 3H2OTrig. 3 : R3 · 3H2OTrig. 3 : R3

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 JianshuiiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Yan Guiyin, Zhang Shanghua, Zhao Mingkai, Ding Jianping, and Li Deyu (1992): Jianshuiite - A new magnesic mineral of chalcophanite group. Acta Mineralogica Sinica 12(1), 69-77 (in Chinese with English abstract). - New Minerals 1990-1994, 88 (abstract).
American Mineralogist (1994), 79, 185-189.
Post, J.E., Thomas, E., Heaney, P.J. (2016): Jianshuiite in oceanic manganese nodules at the Paleocene-Eocene Boundary. American Mineralogist: 101: 407-414.

Internet Links for JianshuiiteHide

Localities for JianshuiiteHide

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.
Atlantic Ocean
  • Walvis Ridge
Post, J.E., Thomas, E., Heaney, P.J. (2016): Jianshuiite in oceanic manganese nodules at the Paleocene-Eocene Boundary. American Mineralogist, 101, 407-414.
  • Western Australia
    • Ngaanyatjarraku Shire
      • West Musgrave Block
        • Wingellina Community (Irrunytju)
Putzolu, F., Balassone, G., Boni, M., Maczurad, M., Mondillo, N., Najorka, J., & Pirajno, F. (2018). Mineralogical association and Ni-Co deportment in the Wingellina oxide-type laterite deposit (Western Australia). Ore Geology Reviews.
China (TL)
  • Yunnan
    • Honghe
      • Jianshui County
Yan Guiyin, Zhang Shanghua, Zhao Mingkai, Ding Jianping, and Li Deyu (1992): Acta Mineralogica Sinica 12(1), 69-77.
  • Lower Silesian Voivodeship
    • Ząbkowice Śląskie County
      • Gmina Ząbkowice Śląskie
        • Szklary
Pieczka, A., Włodek, A., Gołębiowska, B., Szełęg, E., Szuszkiewicz, A., Ilnicki, S., Nejbert, K., Turniak, K. (2015): Phosphate-bearing pegmatites in the Góry Sowie Block and adjacent areas, Sudetes, SW Poland. 7th International Symposium on Granitic Pegmatites, PEG 2015 Książ, Poland. Abstracts: 77-78; Pieczka, A., Biagioni, C., Gołębiowska, B., Jeleń, P., Pasero, M., & Sitarz, M. (2018). Parafiniukite, Ca2Mn3 (PO4) 3Cl, a New Member of the Apatite Supergroup from the Szklary Pegmatite, Lower Silesia, Poland: Description and Crystal Structure. Minerals, 8(11), 485.
  • Aragón
    • Teruel
      • Ojos Negros
Calvo, M. (2008). Minerales de Aragón. Prames, Zaragoza. 463 pags.
Mineral and/or Locality  
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