Ningyoite
A valid IMA mineral species
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About Ningyoite
Monument at Ningyo Pass, Japan
Formula:
(U,Ca,Ce)2(PO4)2 · 1-2H2O
Colour:
Brownish green to brown
Hardness:
3 - 4
Crystal System:
Orthorhombic
Name:
Named in 1959 by Tadashi Muto, Robert Meyrowitz, Alfred M. Pommer, and Toru Murano for the Ningyo Pass, Japan, where the country's largest uranium deposit and type locality mine are located.
Type Locality:
A potential Fe-Th-REE analogue is known as 'UM1979-10-PO:FeHREETh'. Also comparable to 'UM1980-04-PO:CaHREETh'.
Unique Identifiers
Mindat ID:
2906
Long-form identifier:
mindat:1:1:2906:9
GUID
(UUID V4):
(UUID V4):
cc7abfac-402e-491a-bb62-529ed374ba6b
IMA Classification of Ningyoite
Approved
First published:
1959
Classification of Ningyoite
8.CJ.85
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
J : With only large cations
8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
J : With only large cations
40.4.8.1
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
4 : (AB)5(XO4)2·xH2O
40 : HYDRATED NORMAL PHOSPHATES,ARSENATES AND VANADATES
4 : (AB)5(XO4)2·xH2O
19.11.13
19 : Phosphates
11 : Phosphates of U
19 : Phosphates
11 : Phosphates of U
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Nin | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Ningyoite
Colour:
Brownish green to brown
Hardness:
3 - 4 on Mohs scale
Optical Data of Ningyoite
Type:
Biaxial
RI values:
nα = 1.690 - 1.700 nβ = 1.640 - 1.710
Max Birefringence:
δ = 1.690
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
High
Dispersion:
not discernible
Pleochroism:
Weak
Comments:
Paler in X direction
Chemistry of Ningyoite
Mindat Formula:
(U,Ca,Ce)2(PO4)2 · 1-2H2O
Crystallography of Ningyoite
Crystal System:
Orthorhombic
Cell Parameters:
a = 6.78 Å, b = 12.1 Å, c = 6.38 Å
Ratio:
a:b:c = 0.56 : 1 : 0.527
Unit Cell V:
523.40 ų (Calculated from Unit Cell)
Comment:
May be hexagonal or trigonal (see Scharmová & Scharm (1994) and references cited therein).
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.02 Å | (very strong |
| broad) Å | ( |
| 2.81 Å | (strong) |
| 2.13 Å | (strong) |
| 4.33 Å | (moderate) |
| 3.38 Å | (moderate |
| broad) Å | ( |
| 5.99 Å | (weak |
| broad) Å | ( |
| 3.45 Å | (weak) |
Comments:
Ningyo-Toge mine, Japan. Data from the type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47f : [Uranyl (U⁶⁺) minerals] | |
| Stage 10a: Neoproterozoic oxygenation/terrestrial biosphere | <0.6 |
| 50 : Coal and/or oil shale minerals | <0.36 |
| Stage 10b: Anthropogenic minerals | <10 Ka |
| 54 : Coal and other mine fire minerals (see also #51 and #56) |
Type Occurrence of Ningyoite
General Appearance of Type Material:
Unoxidized zone, usually as a thin coating
on pyrite and apatite or filling cavities in the conglomerate.
on pyrite and apatite or filling cavities in the conglomerate.
Place of Conservation of Type Material:
The Natural History Museum, London, England, 1960,92.
National Museum of Natural History, Washington, D.C., USA, 113822, 115885.
National Museum of Natural History, Washington, D.C., USA, 113822, 115885.
Geological Setting of Type Material:
Black uranium ores in conglomerate
Associated Minerals at Type Locality:
Reference:
Muto, T., Meyrowitz, R., Pommer, A.M., Murano, T. (1959) Ningyoite, a new uranous phosphate mineral from Japan. American Mineralogist: 44: 633-650.
Other Language Names for Ningyoite
Related Minerals - Strunz-mindat Grouping
| 8.CJ. | Sainfeldite | Ca5(AsO4)2(AsO3OH)2 · 4H2O |
| 8.CJ. | Caesiumpharmacosiderite | CsFe4[(AsO4)3(OH)4] · 4H2O |
| 8.CJ. | Jeankempite | Ca5(AsO4)2(HAsO4)2 · 7H2O |
| 8.CJ. | Airdite | Sr(V4+O)2(PO4)2 · 4H2O |
| 8.CJ. | Dobšináite | Ca2Ca(AsO4)2 · 2H2O |
| 8.CJ.05 | Stercorite | (NH4)Na(PO3OH) · 4H2O |
| 8.CJ.10 | Mundrabillaite | (NH4)2Ca(PO3OH)2 · H2O |
| 8.CJ.10 | Swaknoite | (NH4)2Ca(PO3OH)2 · H2O |
| 8.CJ.15 | Nabaphite | NaBaPO4 · 9H2O |
| 8.CJ.15 | Nastrophite | Na(Sr,Ba)PO4 · 9H2O |
| 8.CJ.20 | Haidingerite | CaHAsO4 · H2O |
| 8.CJ.25 | Vladimirite | Ca4(AsO4)2(AsO3OH) · 4H2O |
| 8.CJ.25 | Rhabdophane-(Y) | YPO4 · H2O |
| 8.CJ.27 | Churchite-(Dy) | (Dy,Sm,Gd,Nd)PO4 · 2H2O |
| 8.CJ.30 | Ferrarisite | Ca5(AsO4)2(HAsO4)2 · 9H2O |
| 8.CJ.35 | Machatschkiite | (Ca,Na)6(AsO4)(HAsO4)3(PO4,SO4) · 15H2O |
| 8.CJ.35 | Fulbrightite | Ca(VO)2(AsO4)2 · 4H2O |
| 8.CJ.40 | Phaunouxite | Ca3(AsO4)2 · 11H2O |
| 8.CJ.40 | Rauenthalite | Ca3(AsO4)2 · 10H2O |
| 8.CJ.45 | Brockite | (Ca,Th,Ce)PO4 · H2O |
| 8.CJ.45 | Grayite | (Th,Pb,Ca)(PO4) · H2O |
| 8.CJ.45 | Rhabdophane-(Ce) | Ce(PO4) · 0.6H2O |
| 8.CJ.45 | Rhabdophane-(La) | La(PO4) · H2O |
| 8.CJ.45 | Rhabdophane-(Nd) | Nd(PO4) · H2O |
| 8.CJ.45 | Tristramite | (Ca,U,Fe)(PO4,SO4) · 2H2O |
| 8.CJ.45 | Smirnovskite | (Th,Ca)PO4 · nH2O |
| 8.CJ.45 | Štěpite | U(AsO3OH)2 · 4H2O |
| 8.CJ.47 | Vysokýite | U4+[AsO2(OH)2]4 · 4H2O |
| 8.CJ.50 | Ardealite | Ca2(PO3OH)(SO4) · 4H2O |
| 8.CJ.50 | Brushite | Ca(PO3OH) · 2H2O |
| 8.CJ.50 | Churchite-(Y) | Y(PO4) · 2H2O |
| 8.CJ.50 | Pharmacolite | Ca(HAsO4) · 2H2O |
| 8.CJ.50 | Churchite-(Nd) | Nd(PO4) · 2H2O |
| 8.CJ.55 | Mcnearite | NaCa5(AsO4)(HAsO4)4 · 4H2O |
| 8.CJ.60 | Dorfmanite | Na2(PO3OH) · 2H2O |
| 8.CJ.65 | Sincosite | Ca(VO)2(PO4)2 · 5H2O |
| 8.CJ.65 | Bariosincosite | Ba(VO)2(PO4)2 · 4H2O |
| 8.CJ.70 | Catalanoite | Na2(PO3OH) · 8H2O |
| 8.CJ.75 | Guérinite | Ca6(HAsO4)3(AsO4)2 · 10.5H2O |
Other Information
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 Ningyoite
mindat.org URL:
https://www.mindat.org/min-2906.html
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References for Ningyoite
Localities for Ningyoite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
Australia | |
| Geosciences |
Bulgaria | |
| Doinikova (2007) |
| Doinikova (2007) |
| Doinikova (2007) |
| Doinikova (2007) |
Canada | |
| Canadian Mineralogist Vol. 19 (1981) |
| Canadian Mineralogist Vol. 19 (1981) | |
China | |
| Abudukeyumu et al. (2022) |
Czech Republic | |
| Jirásek (2001) |
| Pauliš P. et al. (Kutna Hora, issue 1) +1 other reference |
| Doinikova (2007) |
| Pauliš P. et al. (Kutna Hora, issue 1) |
| Pauliš P. et al. (Kutna Hora, issue 1) |
| Pauliš P. et al. (Kutna Hora, issue 1) | |
| Scharm +7 other references | |
| Pauliš P. et al. (Kutna Hora, issue 1) |
| Pauliš P. et al. (Kutna Hora, issue 1) |
| Pauliš P. et al. (Kutna Hora, issue 1) +1 other reference |
France | |
| R. Pierrot |
| - (1998) |
| - (1998) |
Gabon | |
| Utsunomiya et al. (2008) |
Japan (TL) | |
| Muto et al. (1959) +1 other reference |
| Muto (1962) |
| Dr. Kameki Kinoshita collection (curated at Geological Survey of Japan) |
Kazakhstan | |
| Doinikova (2007) |
| Doinikova (2007) |
Poland | |
| Pieczka et al. (2015) |
| Doinikova (2007) +1 other reference |
Russia | |
| Doinikova (2007) |
| Kondrat'eva et al. (2004) |
| Doinikova et al. (2009) |
| Kailachakov et al. (2020) |
Turkey | |
| Top et al. (2018) |
Uzbekistan | |
| Pekov (1998) |
| Pekov (1998) | |
| Doinikova (2007) |
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Ningyo-toge mine, Tottori Prefecture, Japan