Shigaite (original) (raw)

A valid IMA mineral species

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About ShigaiteHide

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Formula:

Mn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O

Colour:

Pale yellow, bright yellow, golden yellow, burnt orange; brown to black if altered; deep yellow with black, inhomogenous inclusions

Name:

Named after Shiga prefecture, Japan, that includes the discovery locality.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:3638:8

0771fd51-a77e-4c70-9b12-2b9e70d5c3b7

IMA Classification of ShigaiteHide

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Type description reference:

Peacor, D.R., Dunn, P.J., Simmons, W.B., Ramik, R.A. (1987) Ferristrunzite, a new member of the strunzite group, from Blaton, Belgium. Neues Jahrbuch für Mineralogie, Monatshefte 1987, Heft 10, 453-457.

Classification of ShigaiteHide

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7.DD.35

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
D : Sulfates (selenates, etc.) with additional anions, with H2O
D : With only medium-sized cations; sheets of edge-sharing octahedra

31.1.2.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq·xH2O, where m:p > 6:1

25.9.8

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
Sga IMA–CNMNC Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43

Pronunciation of ShigaiteHide

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Pronunciation:

Play Recorded by Country
Sorry, your browser doesn't support HTML5 audio. Jolyon Ralph United Kingdom

Physical Properties of ShigaiteHide

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Colour:

Pale yellow, bright yellow, golden yellow, burnt orange; brown to black if altered; deep yellow with black, inhomogenous inclusions

Streak:

Very pale yellow to white

Cleavage:

Perfect
On {0001}

Density:

2.32 g/cm3 (Measured) 2.35 g/cm3 (Calculated)

Optical Data of ShigaiteHide

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Comments:

O = yellow; E = very pale yellow

Comments:

Absorption: O > E
ε not determined

Chemistry of ShigaiteHide

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Mindat Formula:

Mn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O

Crystallography of ShigaiteHide

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Class (H-M):

3 - Rhombohedral

Cell Parameters:

a = 9.51 Å, c = 32.83 Å

Unit Cell V:

2,571.36 ų (Calculated from Unit Cell)

Crystal StructureHide

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ID Species Reference Link Year Locality Pressure (GPa) Temp (K)
0005480 Shigaite Cooper M A, Hawthorne F C (1996) The crystal structure of shigaite, [AlMn2(OH)6]3(SO4)2Na(H2O)6{H2O}6, a hydrotalcite-group mineral The Canadian Mineralogist 34 91-97 1996 0 293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

d-spacing Intensity
10.89 Å (100)
5.47 Å (90)
2.457 Å (90)
3.664 Å (80)
2.198 Å (60)
1.944 Å (60)
4.36 Å (40)

Geological EnvironmentHide

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Type Occurrence of ShigaiteHide

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General Appearance of Type Material:

Millimeter-sized tabular hexagonal crystals.

Place of Conservation of Type Material:

National Museum of Natural History (Smithsonian), Washington, D.C., USA, 122089.

Geological Setting of Type Material:

A secondary phase in veins cutting altered manganosite-rhodochrosite-sonolite ore.

Associated Minerals at Type Locality:

Reference:

Peacor, D.R., Dunn, P.J., Kato, A., Wicks, F.J. (1985) Shigaite, a new manganese aluminum sulfate mineral from the Ioi Mine, Shiga, Japan. Neues Jahrbuch für Mineralogie, Monatshefte Jg.: 1985(10): 453-457.

Synonyms of ShigaiteHide

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Other Language Names for ShigaiteHide

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Relationship of Shigaite to other SpeciesHide

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Other Members of this group:

Erssonite Mg7Fe3+2(OH)18[Ca(H2O)6](SO4)2 · 12H2O Trig. 3_m_ _(_32/m ) : _P_3_c_1
Karchevskyite Mg18Al9(OH)54Sr2(CO3)9(H2O)6(H3O)5 Trig.
Motukoreaite Mg6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2O Trig. 3_m_ _(_32/m ) : R_3_m
Natroglaucocerinite Zn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O Hex.
Nikischerite Fe2+6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O Trig. 3 : _R_3
Wermlandite Mg7Al2(OH)18[Ca(H2O)6][SO4]2 · 6H2O Trig. 3_m_ _(_32/m ) : _P_3_c_1

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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7.DD. Asagiite NiCu4(SO4)2(OH)6 · 6H2O Mon. 2/m : _P_21/b
7.DD.05 Felsőbányaite Al4(SO4)(OH)10 · 4H2O Mon. 2 : _P_21
7.DD.07 Llantenesite Cu6Al[SeO4](OH)12Cl · 3H2O Trig. 3_m_ : P_31_c
7.DD.10 Langite Cu4(SO4)(OH)6 · 2H2O Mon. m
7.DD.10 Posnjakite Cu4(SO4)(OH)6 · H2O Mon. m : P m
7.DD.10 Wroewolfeite Cu4(SO4)(OH)6 · 2H2O Mon. m : P m
7.DD.10 Gobelinite CoCu4(SO4)2(OH)6 · 6H2O Mon. 2/m : _P_21/m
7.DD.10 Fehrite MgCu4(SO4)2(OH)6 · 6H2O Mon. 2/m : _P_21/b
7.DD.15 Spangolite Cu6Al(SO4)(OH)12Cl · 3H2O Trig. 3_m_ : P_31_c
7.DD.15 Kobyashevite Cu5(SO4)2(OH)6 · 4H2O Tric. 1 : _P_1
7.DD.15 Unnamed (Dimorph of Devilline) CaCu4(SO4)2(OH)6 · 3H2O Mon. 2/m : _P_21/b
7.DD.20 Ktenasite ZnCu4(SO4)2(OH)6 · 6H2O Mon. 2/m : _P_21/b
7.DD.25 Christelite Cu2Zn3(SO4)2(OH)6 · 4H2O Tric. 1 : _P_1
7.DD.30 Campigliaite Mn2+Cu4(SO4)2(OH)6 · 4H2O Mon. 2 : _B_2
7.DD.30 Devilline CaCu4(SO4)2(OH)6 · 3H2O Mon. 2/m : _P_21/b
7.DD.30 Orthoserpierite Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O Orth. m _m_2 : P c _a_21
7.DD.30 Serpierite Ca(Cu,Zn)4(SO4)2(OH)6 · 3H2O Mon. 2/m : _B_2/b
7.DD.30 Niedermayrite CdCu4(SO4)2(OH)6 · 4H2O Mon. 2/m : _P_21/m
7.DD.30 Edwardsite Cu3Cd2(SO4)2(OH)6 · 4H2O Mon. 2/m : _P_21/b
7.DD.35 Carrboydite (Ni1-xAlx)(SO4)x/2(OH)2 · nH2O Hex.
7.DD.35 Glaucocerinite (Zn1-xAlx)(OH)2(SO4)x/2 · nH2O Hex.
7.DD.35 Honessite (Ni1-xFe3+x)(OH)2[SO4]x/2 · nH2O Trig.
7.DD.35 Hydrohonessite (Ni1-xFe3+x)(OH)2(SO4)x/2 · nH2O Hex.
7.DD.35 Motukoreaite Mg6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2O Trig. 3_m_ _(_32/m ) : R_3_m
7.DD.35 Mountkeithite [(Mg1-xFe3+x)(OH)2][SO4]x/2 · nH2O Hex.
7.DD.35 Wermlandite Mg7Al2(OH)18[Ca(H2O)6][SO4]2 · 6H2O Trig. 3_m_ _(_32/m ) : _P_3_c_1
7.DD.35 Woodwardite Cu1-xAlx(OH)2(SO4)x/2 · nH2O Trig. 3_m_ _(_32/m ) : R_3_m
7.DD.35 Zincaluminite (Zn1-xAlx)(SO4)x/2(OH)2 · nH2O
7.DD.35 Hydrowoodwardite (Cu1-xAlx)(OH)2[SO4]x/2 · nH2O Trig. 3_m_ _(_32/m ) : R_3_m
7.DD.35 Zincowoodwardite Zn1-xAlx(OH)2[SO4]x/2 · nH2O Trig.
7.DD.35 Natroglaucocerinite Zn6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O Hex.
7.DD.35 Nikischerite Fe2+6Al3(OH)18[Na(H2O)6](SO4)2 · 6H2O Trig. 3 : _R_3
7.DD.40 Isselite Cu6(SO4)(OH)10(H2O)4 · H2O Orth. m _m_2 : P m _n_21
7.DD.40 Lawsonbauerite (Mn2+,Mg)9Zn4(SO4)2(OH)22 · 8H2O Mon. 2/m : _P_21/b
7.DD.40 Torreyite (Mg,Mn2+)7◻2Mn2+2Zn4(SO4)2(OH)22 · 8H2O Mon. 2/m : _P_21/b
7.DD.45 Mooreite Mg9◻2Mn2Zn4(SO4)2(OH)26 · 8H2O Mon. 2/m : _P_2/b
7.DD.45 Hodgesmithite (Cu,Zn)6Zn(SO4)2(OH)10 · 3H2O Trig. 3 : _P_3
7.DD.47 Lahnsteinite Zn4(SO4)(OH)6 · 3H2O Tric. 1 : _P_1
7.DD.50 Namuwite Zn4(SO4)(OH)6 · 4H2O Trig. 3 : _P_3
7.DD.50 Minohlite (Cu,Zn)7(SO4)2(OH)10 · 8H2O Hex.
7.DD.52 Lauraniite Cu6Cd2(SO4)2(OH)12 · 5H2O Mon. 2/m : _P_21/b
7.DD.55 Bechererite Zn7Cu(OH)13[(SiO(OH)3(SO4)] Trig. 3 : _P_3
7.DD.60 Ramsbeckite (Cu,Zn)15(SO4)4(OH)22 · 6H2O Mon. 2/m
7.DD.65 Vonbezingite Ca6Cu3(SO4)3(OH)12 · 2H2O Mon. 2/m : _P_21/b
7.DD.70 Redgillite Cu6(SO4)(OH)10 · H2O Mon. 2/m : _P_21/b
7.DD.75 Chalcoalumite CuAl4(SO4)(OH)12 · 3H2O Mon. 2 : _P_21
7.DD.75 Nickelalumite NiAl4(SO4)(OH)12(H2O)3 Mon. 2/m
7.DD.75 Kyrgyzstanite ZnAl4(SO4)(OH)12 · 3H2O Mon. 2/m
7.DD.80 Guarinoite Zn6(SO4)(OH)10 · 5H2O Hex.
7.DD.80 Schulenbergite (Cu,Zn)7(SO4)2(OH)10 · 3H2O Trig. 3
7.DD.80 Thérèsemagnanite NaCo4(SO4)(OH)6Cl · 6H2O Trig. 3 : _P_3
7.DD.80 UM1992-30-SO:CCuHZn (Zn,Cu)7(SO4,CO3)2(OH)10 · 3H2O Trig. 3 : _P_3
7.DD.85 Montetrisaite Cu6(SO4)(OH)10 · 2H2O Orth. m _m_2 : C m _c_21

Fluorescence of ShigaiteHide

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Other InformationHide

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Health Risks:

No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

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References for ShigaiteHide

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Reference List:

Hawthorne, F.C., Bladh, K.W., Burke, E.A.J., Ercit, S., Grew, E.S., Grice, J.D., Puziewicz, J., Roberts, A.C., Schedler, R.A., Shigley, J.E. (1986) New mineral names. American Mineralogist: 71: 1543-1548.

Peacor, D.R., Dunn, P.J., Simmons, W.B., Ramik, R.A. (1987) Ferristrunzite, a new member of the strunzite group, from Blaton, Belgium. Neues Jahrbuch für Mineralogie, Monatshefte 1987, Heft 10, 453-457.

Mills, S. J., Christy, A. G., Génin, J.-M. R., Kameda, T., Colombo, F. (2012) Nomenclature of the hydrotalcite supergroup: natural layered double hydroxides. Mineralogical Magazine, 76 (5) 1289-1336 doi:10.1180/minmag.2012.076.5.10

Localities for ShigaiteHide

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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.

Australia
South Australia Pastoral Unincorporated Area Iron Knob ⓘ Iron Monarch Main Pit Pring et al. (1992) +1 other reference
Canada
Québec Montérégie La Vallée-du-Richelieu RCM Mont Saint-Hilaire ⓘ Poudrette quarry (De-Mix quarry; Demix quarry; Uni-Mix quarry; Carrière Mont Saint-Hilaire; MSH) HORVÁTH et al. (2000)
Japan (TL)
Shiga Prefecture Kusatsu City ⓘ Ioi mine (TL) Peacor et al. (1985)
Poland
Silesian Voivodeship Wodzisław County Wodzisław Śląski ⓘ Pszów ? Ł. Kruszewski (PXRD data)
South Africa
Northern Cape John Taolo Gaetsewe District Municipality Joe Morolong Local Municipality ⓘ N'Chwaning Mines Cairncross et al. (1995) +3 other references
ⓘ N'Chwaning I Mine Cairncross et al. (1995) +4 other references
ⓘ N'Chwaning II Mine Gutzmer (1996)
ⓘ Wessels Mine Cairncross (2000)
USA
Michigan Iron County Iron River Mineral Hills ⓘ Homer-Wauseca Group Heinrich et al. (2004)
ⓘ Homer Mine Shawn Carlson (2010)
Stambaugh ⓘ Cannon Mine (Bengal-Tully Mine) A. E. Seaman Mineral Museum collection.
ⓘ Bengal Mine (Bangal Mine) A. E. Seaman Mineral Museum collection.