Imayoshiite (original) (raw)
A valid IMA mineral species
About ImayoshiiteHide
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Formula:
Ca3Al(CO3)[B(OH)4](OH)6 · 12H2O
Specific Gravity:
1.79 (Calculated)
Name:
Named in honor of Takaharu Imayoshi (今吉隆治) (1905 - 1984), Japanese mineral collector, who made significant contributions to mineralogy. His personal collection of ~10,000 specimens, is now in the Geological Museum, Geological Survey of Japan, AIST.
Imayoshiite is the first member of the ettringite group with both CO3 and B(OH)4 anions.
Very similar to UM2008-07-CO:AlBCaHSSi (the latter is ~identical with carbonate-dominant analogue of charlesite).
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:44007:3
707ad74e-c004-4bc6-b587-e2abcae2fba7
IMA Classification of ImayoshiiteHide
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Type description reference:
Nishio-Hamane, D., Ohnishi, M., Momma, K., Shimobayashi, N., Miyawaki, R., Minakawa, T., Inaba, S. (2015) Imayoshiite, Ca3Al(CO3)B(OH)46·12H2O, a new mineral of the ettringite group from Ise City, Mie Prefecture, Japan. Mineralogical Magazine, 79 (2) 413-423 doi:10.1180/minmag.2015.079.2.18
Classification of ImayoshiiteHide
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7.DG.15
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
G : With large and medium-sized cations; with NO3, CO3, B(OH)4, SiO4 or IO3
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 |
|---|---|---|
| Iys | 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 ImayoshiiteHide
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Comment:
Aggregates has a silky lustre, individuals vitreous
Comment:
White in aggregates
Cleavage:
Distinct/Good
on {100}
Fracture:
Irregular/Uneven
Density:
1.79 g/cm3 (Calculated)
Optical Data of ImayoshiiteHide
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RI values:
_n_ω = 1.497(2) _n_ε = 1.470(2)
δ = 0.027
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Chemistry of ImayoshiiteHide
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Mindat Formula:
Ca3Al(CO3)[B(OH)4](OH)6 · 12H2O
Crystallography of ImayoshiiteHide
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Class (H-M):
6 - Pyramidal
Cell Parameters:
a = 11.0264(11) Å, c = 10.6052(16) Å
Unit Cell V:
1,116.65 ų (Calculated from Unit Cell)
Comment:
Data above by XRD data; Single crystal diffraction= 11.04592(2), c = 10.61502(19) Å
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 9.5434 Å | (100) |
| 5.5149 Å | (18) |
| 4.6364 Å | (40) |
| 3.8217 Å | (33) |
| 3.4171 Å | (16) |
| 2.7293 Å | (31) |
| 2.6506 Å | (11) |
| 2.5694 Å | (12) |
| 2.5253 Å | (69) |
| 2.1739 Å | (30) |
| 2.1198 Å | (23) |
| 1.7677 Å | (28) |
Geological EnvironmentHide
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Type Occurrence of ImayoshiiteHide
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General Appearance of Type Material:
Aggregates of fibrous to acicular crystals up to 2 mm across.
Place of Conservation of Type Material:
National Museum of Nature and Science, Japan, specimen number NSM, M43749 (holotype) and M43750 (cotype).
Geological Setting of Type Material:
In cavities in altered gabbro xenolith in sepentinized dunite
Associated Minerals at Type Locality:
Reference:
Nishio-Hamane, D., Ohnishi, M., Momma, K., Shimobayashi, N., Miyawaki, R., Minakawa, T., Inaba, S. (2015) Imayoshiite, Ca3Al(CO3)[B(OH)4](OH)6·12H2O, a new mineral of the ettringite group from Ise City, Mie Prefecture, Japan. Mineralogical Magazine: 79: 413-423.
Synonyms of ImayoshiiteHide
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Other Language Names for ImayoshiiteHide
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Relationship of Imayoshiite to other SpeciesHide
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Other Members of this group:
Common AssociatesHide
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Associated Minerals Based on Photo Data:
Related Minerals - Strunz-mindat GroupingHide
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| 7.DG. | Mathesiusite | K5(UO2)4(SO4)4(VO5) · 4H2O | Tet. 4/m : _P_4/n |
|---|---|---|---|
| 7.DG.05 | Darapskite | Na3(SO4)(NO3) · H2O | Mon. 2/m : _P_21/m |
| 7.DG.10 | Clinoungemachite | (Na, K, Fe, SO4) | Mon. 2/m |
| 7.DG.10 | Humberstonite | Na7K3Mg2(SO4)6(NO3)2 · 6H2O | Trig. 3 : _R_3 |
| 7.DG.10 | Ungemachite | K3Na8Fe(SO4)6(NO3)2 · 6H2O | Trig. 3 : _R_3 |
| 7.DG.15 | Bentorite | Ca6Cr2(SO4)3(OH)12 · 26H2O | Trig. 3_m_ : P_31_c |
| 7.DG.15 | Charlesite | Ca6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O | Trig. 3_m_ : P_31_c |
| 7.DG.15 | Ettringite | Ca6Al2(SO4)3(OH)12 · 26H2O | Trig. 3_m_ : P_31_c |
| 7.DG.15 | Jouravskite | Ca3Mn4+(SO4)(CO3)(OH)6 · 12H2O | Hex. 6 : _P_63 |
| 7.DG.15 | Sturmanite | Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25H2O | Trig. 3_m_ : P_31_c |
| 7.DG.15 | Thaumasite | Ca3(SO4)[Si(OH)6](CO3) · 12H2O | Hex. 6 : _P_63 |
| 7.DG.15 | Carraraite | Ca3(SO4)[Ge(OH)6](CO3) · 12H2O | Hex. |
| 7.DG.15 | Buryatite | Ca3(Si,Fe3+,Al)(SO4)B(OH)4(OH,O)6 · 12H2O | Trig. 3_m_ : P_31_c |
| 7.DG.15 | Birunite | Ca18(SiO3)8.5(CO3)8.5SO4 · 15H2O(?) | |
| 7.DG.15 | Hielscherite | Ca3Si(SO4)(SO3)(OH)6 · 11H2O | Hex. 6 : _P_63 |
| 7.DG.15 | Kottenheimite | Ca 3Si(SO4)2(OH)6 · 12H2O | Hex. 6/m : _P_63/m |
| 7.DG.15 | Tatarinovite | Ca3Al(SO4)[B(OH)4](OH)6 · 12H2O | Hex. 6 : _P_63 |
| 7.DG.15 | Siwaqaite | Ca6Al2(CrO4)3(OH)12 · 26H2O | Trig. 3_m_ : P_31_c |
| 7.DG.15 | Chiyokoite | Ca3Si(CO3)[B(OH)4]O (OH)5 · 12H2O | Hex. 6 : _P_63 |
| 7.DG.20 | Rapidcreekite | Ca2(SO4)(CO3) · 4H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P b c n |
| 7.DG.25 | Tatarskite | Ca6Mg2(SO4)2(CO3)2(OH)4Cl4 · 7H2O | Orth. |
| 7.DG.30 | Nakauriite | Cu8(SO4)4(CO3)(OH)6 · 48H2O | Orth. |
| 7.DG.35 | Chessexite | (Na,K)4Ca2(Mg,Zn)3Al8(SO4)10(SiO4)2 · 40H2O | Orth. |
| 7.DG.40 | Carlosruizite | K6(Na,K)4Na6Mg10(SeO4)12(IO3)12 · 12H2O | Trig. 3_m_ _(_32/m ) : _P_3_c_1 |
| 7.DG.40 | Fuenzalidaite | K6(Na,K)4Na6Mg10(SO4)12(IO3)12 · 12H2O | Trig. 3_m_ _(_32/m ) : _P_3_c_1 |
| 7.DG.45 | Chelyabinskite | (Ca,Mg)3(SO4,CO3)2[Si(OH)6] · 9H2O (?) | Orth. |
| 7.DG.55 | Ramazzoite | [Mg8Cu12(PO4)(CO3)4(OH)24(H2O)20][(H0.33SO4)3(H2O)36] | Iso. 43_m_ : P_43_m |
| 7.DG.60 | Witzkeite | Na4K4Ca(NO3)2(SO4)4 · 2H2O | Mon. 2/m : _B_2/b |
Fluorescence of ImayoshiiteHide
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No fluorescence under SW or LW UV
Other InformationHide
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IR Spectrum:
Absorption bands at 3600 and 3420 cm-1 due to O-H stretching vibrations, at 1678 cm-1 due to H-O-H bending vibrations, at 1417 and 882 cm-1 due to the vibrations of the carbonate group and at 1207 cm-1 due to the vibrations of B(OH)4 tetrahedra.
Thermal Behaviour:
The DTA curve has a strong endothermic peak at 120ºC corresponding to loss of water. The weight loss was 50.02% from room temperature to 500ºC.
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 ImayoshiiteHide
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References for ImayoshiiteHide
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Reference List:
Nishio-Hamane, D., Ohnishi, M., Momma, K., Shimobayashi, N., Miyawaki, R., Minakawa, T., Inaba, S. (2015) Imayoshiite, Ca3Al(CO3)B(OH)46·12H2O, a new mineral of the ettringite group from Ise City, Mie Prefecture, Japan. Mineralogical Magazine, 79 (2) 413-423 doi:10.1180/minmag.2015.079.2.18
Localities for ImayoshiiteHide
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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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- 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). 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 (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
| China | |
|---|---|
| Inner Mongolia Chifeng City (Ulanhad League; Chifeng Prefecture) Hexigten Banner (Keshiketeng Co.) ⓘ Shijiangshan mine (Dashishan mine) | Desor (02/2021) +1 other reference |
| Japan (TL) | |
| Mie Prefecture Ise City ⓘ Suisho-dani (TL) | Williams et al. (2013) +1 other reference |