Jôkokuite (original) (raw)
A valid IMA mineral species
About JôkokuiteHide
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Name:
Named in 1978 by M. Nambu, K. Tanida, T. Kitamura, E. Kato for the type locality of Jôkoku mine.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:2109:4
9cf29cd2-5eec-4815-8ce8-949f55d1f6e6
IMA Classification of JôkokuiteHide
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IMA Formula:
Mn2+(SO4) · 5H2O
Type description reference:
Nambu, Matsuo, Tanida, Katsutoshi, Kitamura, Tsuyoshi, Kato, Eiichi (1978) Jôkokuite, MnSO4·5H2O, a new mineral from the Jôkoku Mine, Hokkaido, Japan. Mineralogical Journal, 9 (1) 28-38 doi:10.2465/minerj.9.28
Classification of JôkokuiteHide
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7.CB.20
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations
29.6.7.4
29 : HYDRATED ACID AND NORMAL SULFATES
6 : AXO4·xH2O
25.9.2
25 : Sulphates
9 : Sulphates of Mn
Mineral SymbolsHide
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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference |
|---|---|---|
| Jôk | 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 JôkokuiteHide
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Transparency:
Transparent, Translucent
Comment:
Colorless in thin section.
Density:
2.03 g/cm3 (Measured) 2.094 g/cm3 (Calculated)
Optical Data of JôkokuiteHide
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RI values:
_n_α = 1.498(3) _n_β = 1.510(3) _n_γ = 1.517(3)
2V:
Measured: 70° to 80°, Calculated: 74°
δ = 0.019
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of JôkokuiteHide
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Mindat Formula:
MnSO4 · 5H2O
Crystallography of JôkokuiteHide
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Class (H-M):
1 - Pinacoidal
Cell Parameters:
a = 6.37 Å, b = 10.77 Å, c = 6.13 Å
α = 98.77°, β = 109.95°, γ = 75.03°
Ratio:
a:b:c = 0.591 : 1 : 0.569
Unit Cell V:
380.94 ų (Calculated from Unit Cell)
Morphology:
Massive stalactitic, to 5 cm long.
Comment:
Space Group: by analogy to chalcanthite
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.84 Å | (100) |
| 2.727 Å | (72) |
| 4.98 Å | (61) |
| 5.66 Å | (56) |
| 1.622 Å | (31) |
| 2.290 Å | (27) |
| 3.28 Å | (25) |
Geological EnvironmentHide
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Type Occurrence of JôkokuiteHide
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General Appearance of Type Material:
Stalactites, up to about 5 cm long and 1 cm across, composed of irregular and fine-grained crystals with a mozaic texture. Individual grains are less than 0.05 mm across.
Place of Conservation of Type Material:
Tohoku University, Sendai; National Science Museum, Tokyo, Japan, M-21492; National Museum of Natural History, Washington, D.C., USA, 136582.
Geological Setting of Type Material:
Efflorescences in oxidized portions of mine workings.
Associated Minerals at Type Locality:
Reference:
Nambu, M., Tanida, K., Kitamura, T., Kato, E. (1978) Jôkokuite, MnSO4·5H2O, a new mineral from the Jôkoku mine, Hokkaido, Japan. Mineralogical Journal: 9: 28-38.
Synonyms of JôkokuiteHide
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Other Language Names for JôkokuiteHide
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Relationship of Jôkokuite to other SpeciesHide
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Other Members of this group:
Related Minerals - Strunz-mindat GroupingHide
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| 7.CB. | Sarvodaite | Al2(SO4)3 · 5H2O | Mon. 2/m : _P_21/m |
|---|---|---|---|
| 7.CB.02 | Voudourisite | CdSO4 · H2O | Mon. 2/m : _P_21/m |
| 7.CB.05 | Dwornikite | Ni(SO4) · H2O | Mon. 2/m : _B_2/b |
| 7.CB.05 | Gunningite | ZnSO4 · H2O | Mon. 2/m : _B_2/b |
| 7.CB.05 | Kieserite | MgSO4 · H2O | Mon. 2/m : _B_2/b |
| 7.CB.05 | Poitevinite | (Cu,Fe)SO4 · H2O | Tric. 1 : _P_1 |
| 7.CB.05 | Szmikite | MnSO4 · H2O | Mon. 2/m : _B_2/b |
| 7.CB.05 | Szomolnokite | FeSO4 · H2O | Mon. 2/m : _B_2/b |
| 7.CB.05 | Cobaltkieserite | CoSO4 · H2O | Mon. 2/m : _B_2/b |
| 7.CB.07 | Sanderite | MgSO4 · 2H2O | Orth. 222 : _P_212121 |
| 7.CB.10 | Bonattite | CuSO4 · 3H2O | Mon. m : B b |
| 7.CB.12 | Belogubite | CuZn(SO4)2 · 10H2O | Tric. 1 : _P_1 |
| 7.CB.15 | Aplowite | (Co,Mn,Ni)SO4 · 4H2O | Mon. 2/m |
| 7.CB.15 | Boyleite | (Zn,Mg)SO4 · 4H2O | Mon. 2/m : _P_21/b |
| 7.CB.15 | Ilesite | (Mn,Zn,Fe)SO4 · 4H2O | Mon. 2/m |
| 7.CB.15 | Rozenite | FeSO4 · 4H2O | Mon. 2/m : _P_21/b |
| 7.CB.15 | Starkeyite | MgSO4 · 4H2O | Mon. 2/m : _P_21/b |
| 7.CB.15 | Drobecite | CdSO4 · 4H2O | Mon. 2/m : _P_21/m |
| 7.CB.15 | Cranswickite | MgSO4 · 4H2O | Mon. m : B b |
| 7.CB.20 | Chalcanthite | CuSO4 · 5H2O | Tric. 1 : _P_1 |
| 7.CB.20 | Pentahydrite | MgSO4 · 5H2O | Tric. 1 : _P_1 |
| 7.CB.20 | Siderotil | FeSO4 · 5H2O | Tric. |
| 7.CB.25 | Bianchite | Zn(SO4) · 6H2O | Mon. 2/m : _P_2/m |
| 7.CB.25 | Chvaleticeite | Mn(SO4) · 6H2O | Mon. 2/m : _B_2/b |
| 7.CB.25 | Ferrohexahydrite | FeSO4 · 6H2O | Mon. 2/m : _B_2/b |
| 7.CB.25 | Hexahydrite | MgSO4 · 6H2O | Mon. 2/m : _P_2/m |
| 7.CB.25 | Moorhouseite | Co(SO4) · 6H2O | Mon. 2/m : _B_2/b |
| 7.CB.25 | Nickelhexahydrite | Ni(SO4) · 6H2O | Mon. 2/m : _B_2/b |
| 7.CB.30 | Retgersite | NiSO4 · 6H2O | Tet. 422 : _P_41212 |
| 7.CB.35 | Bieberite | CoSO4 · 7H2O | Mon. 2/m : _P_2/m |
| 7.CB.35 | Boothite | CuSO4 · 7H2O | Mon. 2/m : _P_21/b |
| 7.CB.35 | Mallardite | MnSO4 · 7H2O | Mon. 2/m : _P_2/m |
| 7.CB.35 | Melanterite | Fe2+(H2O)6SO4 · H2O | Mon. 2/m : _P_21/b |
| 7.CB.35 | Zincmelanterite | (Zn,Cu,Fe)SO4 · 7H2O | Mon. 2/m : _P_21/b |
| 7.CB.35 | Alpersite | (Mg,Cu)(SO4) · 7H2O | Mon. 2/m : _P_21/b |
| 7.CB.40 | Epsomite | MgSO4 · 7H2O | Orth. 222 : _P_212121 |
| 7.CB.40 | Goslarite | ZnSO4 · 7H2O | Orth. 222 : _P_212121 |
| 7.CB.40 | Morenosite | NiSO4 · 7H2O | Orth. 222 : _P_212121 |
| 7.CB.45 | Alunogen | Al2(SO4)3 · 17H2O | Tric. 1 : _P_1 |
| 7.CB.45 | Meta-alunogen | Al2(SO4)3 · 12H2O | Orth. |
| 7.CB.50 | Aluminocoquimbite | Al2Fe2(SO4)6(H2O)12 · 6H2O | Trig. 3_m_ _(_32/m ) : P_31_c |
| 7.CB.50 | Lazaridisite | 3CdSO4 · 8H2O | Mon. 2/m : _B_2/b |
| 7.CB.52 | Pararaisaite | CuMg[Te6+O4(OH)2] · 6H2O | Mon. 2/m : _P_21/b |
| 7.CB.55 | Coquimbite | AlFe3(SO4)6(H2O)12 · 6H2O | Trig. 3_m_ _(_32/m ) : P_31_c |
| 7.CB.55 | Paracoquimbite | Fe4(SO4)6(H2O)12 · 6H2O | Trig. 3 : _R_3 |
| 7.CB.55 | Rhomboclase | (H5O2)Fe3+(SO4)2 · 2H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 7.CB.55 | Raisaite | CuMg[Te6+O4(OH)2] · 6H2O | Mon. 2/m : _B_2/b |
| 7.CB.57 | Caichengyunite | Fe2+3Al2(SO4)6 · 30H2O | Mon. |
| 7.CB.60 | Kornelite | Fe2(SO4)3 · 7H2O | Mon. 2/m : _P_21/m |
| 7.CB.65 | Quenstedtite | Fe2(SO4)3 · 11H2O | Tric. 1 : _P_1 |
| 7.CB.70 | Lausenite | Fe2(SO4)3 · 5H2O | Mon. 2/m : _P_21/m |
| 7.CB.75 | Lishizhenite | ZnFe2(SO4)4 · 14H2O | Tric. 1 : _P_1 |
| 7.CB.75 | Römerite | Fe2+Fe3+2(SO4)4 · 14H2O | Tric. 1 : _P_1 |
| 7.CB.80 | Ransomite | CuFe2(SO4)4 · 6H2O | Mon. 2/m : _P_21/b |
| 7.CB.85 | Apjohnite | Mn2+Al2(SO4)4 · 22H2O | Mon. 2/m : _P_21/b |
| 7.CB.85 | Bílinite | Fe2+Fe3+2(SO4)4 · 22H2O | Mon. 2/m : _P_21/b |
| 7.CB.85 | Dietrichite | (Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2O | Mon. 2/m : _P_21/b |
| 7.CB.85 | Halotrichite | FeAl2(SO4)4 · 22H2O | Mon. 2 : _P_2 |
| 7.CB.85 | Pickeringite | MgAl2(SO4)4 · 22H2O | Mon. 2/m : _P_21/b |
| 7.CB.85 | Redingtonite | (Fe2+,Mg,Ni)(Cr,Al)2(SO4)4 · 22H2O | Mon. 2 |
| 7.CB.85 | Wupatkiite | (Co,Mg,Ni)Al2(SO4)4 · 22H2O | Mon. 2/m : _P_21/b |
| 7.CB.90 | Meridianiite | MgSO4 · 11H2O | Tric. 1 : _P_1 |
Other InformationHide
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Thermal Behaviour:
The DTA curve shows three distinctive endothermic peaks at 140°C, 328°C and 1032°C, and three weak but sharp endothermic peaks at 60°C, 83°C and 890°C.
Notes:
Readily soluble in H2O.
Special Storage/
Display Requirements:
Dehydrates to ilesite in dry air.
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 JôkokuiteHide
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References for JôkokuiteHide
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Reference List:
Nambu, Matsuo, Tanida, Katsutoshi, Kitamura, Tsuyoshi, Kato, Eiichi (1978) Jôkokuite, MnSO4·5H2O, a new mineral from the Jôkoku Mine, Hokkaido, Japan. Mineralogical Journal, 9 (1) 28-38 doi:10.2465/minerj.9.28
Localities for JôkokuiteHide
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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
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