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Yuge Island, Inland Sea (Setonaikai), Ehime Prefecture, Japan

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Latitude & Longitude (WGS84): 34° 16' 32'' North , 133° 13' 7'' East
Latitude & Longitude (decimal): 34.27576,133.21878
GeoHash:G#: wyndzrwyy
Locality type:Island
Köppen climate type:Cfa : Humid subtropical climate


(Belongs to Ehime prefecture, but closest city is Innoshima in Hiroshima prefecture, leading to erroneous labels assigning Yuge to Hiroshima.) Al-Ti-Fe-rich skarn in marble bed in a limestone quarry.

Shimazaki et. al.(1984) used material from Yuge in the type description of sadanagaite and magnesiosadanagaite. The sadanagaite-group minerals has been redefined twice sine this paper, latest by Hawthorne et.al (2012). By reviewing Shimazaki's analysis (Electron microprobe), using the software published by Oberti et al. (2012) for identification, the following amphiboles are present:

Potassic-ferro-rootname4:

(Na0.170K0.690)(Na0.020Ca1.970Mn0.010)(Mg1.520Fe2+1.600Mn2+0.040Al0.850Fe3+0.480Ti4+0.510)(Si4.770Al3.230)(O22(OH)2.000)

Potassic-ferro-sadanagaite
(Na0.290K0.710)(Ca2.000)(Mg1.500Fe2+1.550Mn2+0.020Al1.070Fe3+0.400Ti4+0.460)(Si4.61Al3.390)(O22(OH)2.000)

Potassic-ferri-sadanagaite
(Na0.200K0.680)(Ca1.960Mn0.040)(Mg1.750Fe2+1.130Al0.710Fe3+0.970Ti4+0.460)(Si4.520Al3.480)(O22(OH)2.000)

The software operates with 4 valid digits as a standard, and this does not necessarily reflect the accuracy of the original analysis,

Any references to other sadanagaite-group minerals should be validated by micropobe data.


Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

15 valid minerals. 1 (TL) - type locality of valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc. 1 erroneous literature entry.

Rock Types Recorded

Note: this is a very new system on mindat.org and data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

'Apatite'
Reference: Amer.Min.(1984) 69, 465-471
'Clinopyroxene Subgroup'
Reference: Amer.Min.(1984) 69, 465-471
Fluorite
Formula: CaF2
Reference: Yukikaza Ogoshi and Tetsuo Minakawa (2009) JAKOKA: 2009 Annual Meeting of the Japan Association of Mineralogical Sciences, R4-P16
Gugiaite
Formula: Ca2Be(Si2O7)
Reference: Matsubara, S. (2002): The Mineral Species of Japan, p27
Hercynite
Formula: Fe2+Al2O4
Reference: Amer.Min.(1984) 69, 465-471
Ilmenite
Formula: Fe2+TiO3
Reference: Amer.Min.(1984) 69, 465-471
Kobeite-(Y)
Formula: (REE,Fe,U)3 Zr(Ti,Nb)3 O12
'Oxycalciobetafite'
Formula: Ca2(Ti,Nb)2O6O
Pargasite
Formula: {Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Reference: Amer.Min.(1984) 69, 465-471
Perovskite
Formula: CaTiO3
Reference: Amer.Min.(1984) 69, 465-471
'Potassic-ferri-sadanagaite' (FRL)
Formula: {K}{Ca2}{Mg3Fe3+2}(Al3Si5O22)(OH)2
Reference: Hidehiko Shamazaki, Michiaki Bunno, Tohru Ozawa: (1984): Sadanagaite and magnesio-sadanagaite, new silica-poor members of calcic amphibole from Japan, American Mineralogist, Volume 69, pages 465-471
Potassic-ferro-sadanagaite (TL)
Formula: {K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2
Reference: Can Min 35 (1997), 219; Min Rec 29 (1998), 169
Sadanagaite
Formula: {Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2
Reference: Shimazaki, H., Bunno, M., & Ozawa, T. (1984). Sadanagaite and magnesio-sadanagaite, new silica-poor members of calcific amphibole from Japan. Am. Mineral, 69, 465-471.
'Skarn'
Spinel
Formula: MgAl2O4
Reference: Amer.Min.(1984) 69, 465-471
Thorianite
Formula: ThO2
Reference: Yukikaza Ogoshi and Tetsuo Minakawa (2009) JAKOKA: 2009 Annual Meeting of the Japan Association of Mineralogical Sciences, R4-P16
Thorite
Formula: Th(SiO4)
Reference: Yukikaza Ogoshi and Tetsuo Minakawa (2009) JAKOKA: 2009 Annual Meeting of the Japan Association of Mineralogical Sciences, R4-P16
Titanite
Formula: CaTi(SiO4)O
Reference: Amer.Min.(1984) 69, 465-471
Vesuvianite
Formula: (Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Reference: Amer.Min.(1984) 69, 465-471
Zircon
Formula: Zr(SiO4)
Reference: Yukikaza Ogoshi and Tetsuo Minakawa (2009) JAKOKA: 2009 Annual Meeting of the Japan Association of Mineralogical Sciences, R4-P16
Zirconolite
Formula: CaZrTi2O7
Reference: Nishio & Minakawa (2003) Koubutsu-Gakkai Kou'en-Youshi, 201.

List of minerals arranged by Strunz 10th Edition classification

Group 3 - Halides
'Fluorite'3.AB.25CaF2
Group 4 - Oxides and Hydroxides
'Hercynite'4.BB.05Fe2+Al2O4
'Ilmenite'4.CB.05Fe2+TiO3
'Kobeite-(Y)'4.DG.05(REE,Fe,U)3 Zr(Ti,Nb)3 O12
'Perovskite'4.CC.30CaTiO3
'Spinel'4.BB.05MgAl2O4
'Thorianite'4.DL.05ThO2
'Zirconolite'4.DH.30CaZrTi2O7
Group 9 - Silicates
'Gugiaite'9.BB.10Ca2Be(Si2O7)
'Pargasite'9.DE.15{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
'Potassic-ferro-sadanagaite' (TL)9.DE.15{K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2
'Sadanagaite' ?9.DE.15{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2
'Thorite'9.AD.30Th(SiO4)
'Titanite'9.AG.15CaTi(SiO4)O
'Vesuvianite'9.BG.35(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
'Zircon'9.AD.30Zr(SiO4)
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Clinopyroxene Subgroup'-
'Oxycalciobetafite'-Ca2(Ti,Nb)2O6O
'Potassic-ferri-sadanagaite' (TL)-{K}{Ca2}{Mg3Fe3+2}(Al3Si5O22)(OH)2
'Skarn'-

List of minerals arranged by Dana 8th Edition classification

Group 4 - SIMPLE OXIDES
A2X3
Ilmenite4.3.5.1Fe2+TiO3
Perovskite4.3.3.1CaTiO3
Group 5 - OXIDES CONTAINING URANIUM OR THORIUM
AXO2·xH2O
Thorianite5.1.1.2ThO2
Group 7 - MULTIPLE OXIDES
AB2X4
Hercynite7.2.1.3Fe2+Al2O4
Spinel7.2.1.1MgAl2O4
Group 8 - MULTIPLE OXIDES CONTAINING NIOBIUM,TANTALUM OR TITANIUM
A2B2O6(O,OH,F)
Zirconolite8.2.5.5CaZrTi2O7
AB2O6
Kobeite-(Y)8.3.12.1(REE,Fe,U)3 Zr(Ti,Nb)3 O12
Group 9 - NORMAL HALIDES
AX2
Fluorite9.2.1.1CaF2
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with cations in >[6] coordination
Thorite51.5.2.3Th(SiO4)
Zircon51.5.2.1Zr(SiO4)
Group 52 - NESOSILICATES Insular SiO4 Groups and O,OH,F,H2O
Insular SiO4 Groups and O, OH, F, and H2O with cations in [6] and/or >[6] coordination
Titanite52.4.3.1CaTi(SiO4)O
Group 55 - SOROSILICATES Si2O7 Groups,Generally with no Additional Anions
Si2O7 Groups, Generally with No Additional Anions with cations in [8] and lower coordination
Gugiaite55.4.2.6Ca2Be(Si2O7)
Group 58 - SOROSILICATES Insular, Mixed, Single, and Larger Tetrahedral Groups
Insular, Mixed, Single, and Larger Tetrahedral Groups with cations in [6] and higher coordination; single and double groups (n = 1, 2)
Vesuvianite58.2.4.1(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Group 66 - INOSILICATES Double-Width,Unbranched Chains,(W=2)
Amphiboles - Mg-Fe-Mn-Li subgroup
Pargasite66.1.3a.12{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Unclassified Minerals, Rocks, etc.
'Apatite'-
'Clinopyroxene Subgroup'-
'Oxycalciobetafite'-Ca2(Ti,Nb)2O6O
'Potassic-ferri-sadanagaite' (FRL)-{K}{Ca2}{Mg3Fe3+2}(Al3Si5O22)(OH)2
Potassic-ferro-sadanagaite (TL)-{K}{Ca2}{Fe2+3Al2}(Al3Si5O22)(OH)2
Sadanagaite ?-{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2
'Skarn'-

List of minerals for each chemical element

HHydrogen
H Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
H Potassic-ferri-sadanagaite{K}{Ca2}{Mg3Fe23+}(Al3Si5O22)(OH)2
H Potassic-ferro-sadanagaite{K}{Ca2}{Fe32+Al2}(Al3Si5O22)(OH)2
H Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2
H Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
BeBeryllium
Be GugiaiteCa2Be(Si2O7)
BBoron
B Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
OOxygen
O GugiaiteCa2Be(Si2O7)
O HercyniteFe2+Al2O4
O IlmeniteFe2+TiO3
O Kobeite-(Y)(REE,Fe,U)3 Zr(Ti,Nb)3 O12
O OxycalciobetafiteCa2(Ti,Nb)2O6O
O Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
O PerovskiteCaTiO3
O Potassic-ferri-sadanagaite{K}{Ca2}{Mg3Fe23+}(Al3Si5O22)(OH)2
O Potassic-ferro-sadanagaite{K}{Ca2}{Fe32+Al2}(Al3Si5O22)(OH)2
O Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2
O SpinelMgAl2O4
O ThorianiteThO2
O ThoriteTh(SiO4)
O TitaniteCaTi(SiO4)O
O Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
O ZirconZr(SiO4)
O ZirconoliteCaZrTi2O7
FFluorine
F FluoriteCaF2
F Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
NaSodium
Na Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Na Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2
Na Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
MgMagnesium
Mg Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Mg Potassic-ferri-sadanagaite{K}{Ca2}{Mg3Fe23+}(Al3Si5O22)(OH)2
Mg Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2
Mg SpinelMgAl2O4
Mg Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
AlAluminium
Al HercyniteFe2+Al2O4
Al Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Al Potassic-ferri-sadanagaite{K}{Ca2}{Mg3Fe23+}(Al3Si5O22)(OH)2
Al Potassic-ferro-sadanagaite{K}{Ca2}{Fe32+Al2}(Al3Si5O22)(OH)2
Al Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2
Al SpinelMgAl2O4
Al Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
SiSilicon
Si GugiaiteCa2Be(Si2O7)
Si Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Si Potassic-ferri-sadanagaite{K}{Ca2}{Mg3Fe23+}(Al3Si5O22)(OH)2
Si Potassic-ferro-sadanagaite{K}{Ca2}{Fe32+Al2}(Al3Si5O22)(OH)2
Si Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2
Si ThoriteTh(SiO4)
Si TitaniteCaTi(SiO4)O
Si Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Si ZirconZr(SiO4)
KPotassium
K Potassic-ferri-sadanagaite{K}{Ca2}{Mg3Fe23+}(Al3Si5O22)(OH)2
K Potassic-ferro-sadanagaite{K}{Ca2}{Fe32+Al2}(Al3Si5O22)(OH)2
CaCalcium
Ca FluoriteCaF2
Ca GugiaiteCa2Be(Si2O7)
Ca OxycalciobetafiteCa2(Ti,Nb)2O6O
Ca Pargasite{Na}{Ca2}{Mg4Al}(Al2Si6O22)(OH)2
Ca PerovskiteCaTiO3
Ca Potassic-ferri-sadanagaite{K}{Ca2}{Mg3Fe23+}(Al3Si5O22)(OH)2
Ca Potassic-ferro-sadanagaite{K}{Ca2}{Fe32+Al2}(Al3Si5O22)(OH)2
Ca Sadanagaite{Na}{Ca2}{Mg3Al2}(Si5Al3O22)(OH)2
Ca TitaniteCaTi(SiO4)O
Ca Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Ca ZirconoliteCaZrTi2O7
TiTitanium
Ti IlmeniteFe2+TiO3
Ti Kobeite-(Y)(REE,Fe,U)3 Zr(Ti,Nb)3 O12
Ti OxycalciobetafiteCa2(Ti,Nb)2O6O
Ti PerovskiteCaTiO3
Ti TitaniteCaTi(SiO4)O
Ti ZirconoliteCaZrTi2O7
FeIron
Fe HercyniteFe2+Al2O4
Fe IlmeniteFe2+TiO3
Fe Kobeite-(Y)(REE,Fe,U)3 Zr(Ti,Nb)3 O12
Fe Potassic-ferri-sadanagaite{K}{Ca2}{Mg3Fe23+}(Al3Si5O22)(OH)2
Fe Potassic-ferro-sadanagaite{K}{Ca2}{Fe32+Al2}(Al3Si5O22)(OH)2
Fe Vesuvianite(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
ZrZirconium
Zr Kobeite-(Y)(REE,Fe,U)3 Zr(Ti,Nb)3 O12
Zr ZirconZr(SiO4)
Zr ZirconoliteCaZrTi2O7
NbNiobium
Nb Kobeite-(Y)(REE,Fe,U)3 Zr(Ti,Nb)3 O12
Nb OxycalciobetafiteCa2(Ti,Nb)2O6O
ThThorium
Th ThorianiteThO2
Th ThoriteTh(SiO4)
UUranium
U Kobeite-(Y)(REE,Fe,U)3 Zr(Ti,Nb)3 O12

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Hidehiko Shamazaki, Michiaki Bunno, Tohru Ozawa: (1984): Sadanagaite and magnesio-sadanagaite, new silica-poor members of calcic amphibole from Japan, American Mineralogist, Volume 69, pages 465-471
Frank C. Hawthorne, Roberta Oberti, George E. Harlow, Walter V. Maresch, Robert F. Martin, John C. Schumacer, Mark D. Welch (2012): Nomenclature of the amphibole supergroup, American Mineralogist, Volume 97, pages 2031–2048
Roberta Oberti, Elio Cannillo and Giuseppe Toscani (2012): How to name amphiboles after the IMA2012 report: rules of thumb and a new PC program for monoclinic amphiboles, Periodico di Mineralogia Vol81, issue2, pp257-267

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