Iyoite
A valid IMA mineral species
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About Iyoite
Formula:
MnCuCl(OH)3
Colour:
Pale green
Specific Gravity:
3.22 (Calculated)
Crystal System:
Monoclinic
Member of:
Name:
Named for Iyo province, the old name of the current Ehime prefecture.
Mn-Cu ordered analogue of botallackite.
The structure is layered and closely related to that of the associated and genetically similar misakiite.
Could not be synthesized.
The structure is layered and closely related to that of the associated and genetically similar misakiite.
Could not be synthesized.
Unique Identifiers
Mindat ID:
45980
Long-form identifier:
mindat:1:1:45980:4
Similar Names
IMA Classification of Iyoite
Approved
IMA Formula:
Mn2+Cu2+Cl(OH)3
Approval year:
2013
First published:
2017
Type description reference:
Nishio–Hamane, D., Momma, K., Ohnishi, M., Shimobayashi, N., Miyawaki, R., Tomita, N., Okuma, R., Kampf, A. R., Minakawa, T. (2017) Iyoite, MnCuCl(OH)3 and misakiite, Cu3Mn(OH)6Cl2: new members of the atacamite family from Sadamisaki Peninsula, Ehime Prefecture, Japan. Mineralogical Magazine, 81 (3) 485-498 doi:10.1180/minmag.2016.080.104
Classification of Iyoite
3.DA.10b
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
A : With Cu, etc., without Pb
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 for Standard |
|---|---|---|
| Iy | 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 Iyoite
Colour:
Pale green
Density:
3.22 g/cm3 (Calculated)
Chemistry of Iyoite
Mindat Formula:
MnCuCl(OH)3
Element Weights:
Crystallography of Iyoite
Crystal System:
Monoclinic
Class (H-M):
2/m - Prismatic
Space Group:
P21/m
Setting:
P21/m
Cell Parameters:
a = 5.717(2) Å, b = 6.586(2) Å, c = 5.623(3) Å
β = 88.45(3)°
β = 88.45(3)°
Ratio:
a:b:c = 0.868 : 1 : 0.854
Unit Cell V:
211.63 ų
Morphology:
Radial and dendritic aggregates consisting of pale green, bladed crystals.
Comment:
"same axial setting with botallackite"
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.7155 Å | (100) |
| 2.8547 Å | (22) |
| 2.8432 Å | (28) |
| 2.5596 Å | (62) |
| 2.5330 Å | (14) |
| 2.4929 Å | (37) |
| 2.0304 Å | (17) |
| 2.0016 Å | (17) |
Reference:
Nishio–Hamane, D., Momma, K., Ohnishi, M., Shimobayashi, N., Miyawaki, R., Tomita, N., Okuma, R., Kampf, A. R., Minakawa, T. (2017) Iyoite, MnCuCl(OH)3 and misakiite, Cu3Mn(OH)6Cl2: new members of the atacamite family from Sadamisaki Peninsula, Ehime Prefecture, Japan. Mineralogical Magazine, 81 (3) 485-498 doi:10.1180/minmag.2016.080.104
Comments:
From Type Description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Near-surface Processes | |
| 22 : Hydration and low-? subsurface aqueous alteration (see also #23) | |
| Stage 7: Great Oxidation Event | <2.4 |
| 47a : [Near-surface hydration of prior minerals] | |
| 47g : [Halogen-bearing surface weathering minerals] |
Type Occurrence of Iyoite
General Appearance of Type Material:
Blades, in radial and dendritic aggregates
Place of Conservation of Type Material:
Type material is deposited in the collections of the National Museum of Nature and Science, Tsukuba, Japan, specimen number NSM M-43864
Geological Setting of Type Material:
Former Cu mine; in crevices of Mn ore containing native copper, as a result of reaction of seawater with the ore.
Associated Minerals at Type Locality:
Reference:
Nishio–Hamane, D., Momma, K., Ohnishi, M., Shimobayashi, N., Miyawaki, R., Tomita, N., Okuma, R., Kampf, A. R., Minakawa, T. (2017) Iyoite, MnCuCl(OH)3 and misakiite, Cu3Mn(OH)6Cl2: new members of the atacamite family from Sadamisaki Peninsula, Ehime Prefecture, Japan. Mineralogical Magazine, 81 (3) 485-498 doi:10.1180/minmag.2016.080.104
Synonyms of Iyoite
Other Language Names for Iyoite
Relationship of Iyoite to other Species
Member of:
Other Members of Atacamite Group:
| Atacamite | Cu2(OH)3Cl | Orth. mmm(2/m2/m2/m) : Pnma |
| Botallackite | Cu2(OH)3Cl | Mon. 2/m : P21/m |
| Clinoatacamite | Cu2(OH)3Cl | Mon. 2/m |
| Gillardite | Cu3Ni(OH)6Cl2 | Trig. 3m(32/m) : R3m |
| Haydeeite | Cu3Mg(OH)6Cl2 | Trig. 3m(32/m) : P3m1 |
| Herbertsmithite | Cu3Zn(OH)6Cl2 | Trig. 3m(32/m) : R3m |
| Hibbingite | Fe2+2(OH)3Cl | Orth. mmm(2/m2/m2/m) : Pnma |
| Kapellasite | Cu3Zn(OH)6Cl2 | Trig. 3m(32/m) : P3m1 |
| Kempite | Mn2+2(OH)3Cl | Orth. mmm(2/m2/m2/m) : Pnma |
| Kuliginite | Fe3Mg(OH)6Cl2 | Trig. 3 : R3 |
| Leverettite | Cu3Co(OH)6Cl2 | Trig. 3 : R3 |
| Misakiite | Cu3Mn(OH)6Cl2 | Trig. 3m(32/m) : P3m1 |
| Paratacamite | Cu3(Cu,Zn)(OH)6Cl2 | Trig. 3 : R3 |
| Paratacamite-(Mg) | Cu3(Mg,Cu)(OH)6Cl2 | Trig. 3 : R3 |
| Paratacamite-(Ni) | Cu3(Ni,Cu)(OH)6Cl2 | Trig. 3 : R3 |
| Tondiite | Cu3Mg(OH)6Cl2 | Trig. 3m(32/m) : R3m |
| 'Unnamed (Cu-Zn Chloride Hydroxide)' | CuZnCl(OH)3 | Mon. 2/m : P21/m |
Related Minerals - Strunz-mindat Grouping
| 3.DA. | Parahibbingite | Fe2(OH)3Cl |
| 3.DA. | Centennialite | CaCu3Cl2(OH)6 · nH2O (n ~ 0.7) |
| 3.DA. | Bounahasite | Cu+Cu2+2(OH)3Cl2 |
| 3.DA. | Muonionalustaite | Ni3(OH)4Cl2 · 4H2O |
| 3.DA.05 | Melanothallite | Cu2Cl2O |
| 3.DA.10c | Haydeeite | Cu3Mg(OH)6Cl2 |
| 3.DA.10b | Clinoatacamite | Cu2(OH)3Cl |
| 3.DA.10c | Paratacamite | Cu3(Cu,Zn)(OH)6Cl2 |
| 3.DA.10c | Kapellasite | Cu3Zn(OH)6Cl2 |
| 3.DA.10c | Leverettite | Cu3Co(OH)6Cl2 |
| 3.DA.10a | Hibbingite | Fe2+2(OH)3Cl |
| 3.DA.10c | Paratacamite-(Ni) | Cu3(Ni,Cu)(OH)6Cl2 |
| 3.DA.10a | Kempite | Mn2+2(OH)3Cl |
| 3.DA.10c | Tondiite | Cu3Mg(OH)6Cl2 |
| 3.DA.10a | Atacamite | Cu2(OH)3Cl |
| 3.DA.10b | Belloite | Cu(OH)Cl |
| 3.DA.10c | Misakiite | Cu3Mn(OH)6Cl2 |
| 3.DA.10c | Kuliginite | Fe3Mg(OH)6Cl2 |
| 3.DA.10c | Gillardite | Cu3Ni(OH)6Cl2 |
| 3.DA.10b | 'Unnamed (Cu-Zn Chloride Hydroxide)' | CuZnCl(OH)3 |
| 3.DA.10b | Botallackite | Cu2(OH)3Cl |
| 3.DA.10c | Herbertsmithite | Cu3Zn(OH)6Cl2 |
| 3.DA.15 | Claringbullite | Cu4ClF(OH)6 |
| 3.DA.15 | Barlowite | Cu4BrF(OH)6 |
| 3.DA.20 | Simonkolleite | Zn5Cl2(OH)8 · H2O |
| 3.DA.25 | Buttgenbachite | Cu19(NO3)2(OH)32Cl4 · 2H2O |
| 3.DA.25 | Connellite | Cu19(SO4)(OH)32Cl4 · 3H2O |
| 3.DA.30 | Abhurite | Sn21Cl16(OH)14O6 |
| 3.DA.35 | Ponomarevite | K4Cu4Cl10O |
| 3.DA.40 | Calumetite | CaCu4(OH)8Cl2 · 3.5H2O |
| 3.DA.40 | Anthonyite | Cu(OH,Cl)2 · 3H2O |
| 3.DA.45 | Khaidarkanite | Cu4Al3(OH)14F3 · 2H2O |
| 3.DA.50 | Bobkingite | Cu5Cl2(OH)8 · 2H2O |
| 3.DA.55 | Avdoninite | K2Cu5(OH)4Cl8 · H2O |
| 3.DA.60 | Droninoite | Ni6Fe3+2(OH)16Cl2 · 4H2O |
| 3.DA.70 | Chrysothallite | K6Cu6Tl3+Cl17(OH)4 · H2O |
| 3.DA.70 | Dioskouriite | CaCu4Cl6(OH)4 · 4H2O |
| 3.DA.75 | Feodosiyite | Cu11Mg2Cl18(OH)8 · 16H2O |
| 3.DA.80 | Romanorlovite | K8Cu6Cl17(OH)3 |
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 Iyoite
mindat.org URL:
https://www.mindat.org/min-45980.html
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References for Iyoite
Reference List:
Williams, P. A., Hatert, F., Pasero, M., Mills, S. J. (2014) New minerals and nomenclature modifications approved in 2014, CNMNC Newsletter No 20. Mineralogical Magazine, 78 (3) 549-558 doi:10.1180/minmag.2014.078.3.05
Nishio–Hamane, D., Momma, K., Ohnishi, M., Shimobayashi, N., Miyawaki, R., Tomita, N., Okuma, R., Kampf, A. R., Minakawa, T. (2017) Iyoite, MnCuCl(OH)3 and misakiite, Cu3Mn(OH)6Cl2: new members of the atacamite family from Sadamisaki Peninsula, Ehime Prefecture, Japan. Mineralogical Magazine, 81 (3) 485-498 doi:10.1180/minmag.2016.080.104
Nishio–Hamane, D., Momma, K., Ohnishi, M., Shimobayashi, N., Miyawaki, R., Tomita, N., Okuma, R., Kampf, A. R., Minakawa, T. (2017) Iyoite, MnCuCl(OH)3 and misakiite, Cu3Mn(OH)6Cl2: new members of the atacamite family from Sadamisaki Peninsula, Ehime Prefecture, Japan. Mineralogical Magazine, 81 (3) 485-498 doi:10.1180/minmag.2016.080.104
Localities for Iyoite
Showing 1 localities.
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.
Japan (TL) | |
| Williams et al. (2014) +2 other references |
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Ohku mine, Ikata, Nishiuwa District, Ehime Prefecture, Japan