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Minamiite

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Okumanza Hot Spring, Gunma Prefecture, Kanto Region, Honshu Island, Japan
© 2008, J. Weissman

Show Minamiite Photos (2)
Formula:
(Na,Ca
 
0.5
,K)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2
System:TrigonalHardness:3 - 4
Name:For Dr. A. E. Minami (1899-1977)


Alunite Group.

Classification of Minamiite

IMA status:Approved
Strunz 8th edition ID:6/B.11-40
Nickel-Strunz 10th (pending) edition ID:7.BC.10

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
B : Sulfates (selenates, etc.) with additional anions, without H2O
C : With medium-sized and large cations
Dana 8th edition ID:30.2.4.5

30 : ANHYDROUS SULFATES CONTAINING HYDROXYL OR HALOGEN
2 : (AB)2(XO4)Zq
Hey's CIM Ref.:25.6.19

25 : Sulphates
6 : Sulphates of Al and Tl
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Type Occurrence of Minamiite

Type Locality:Okumanza Hot Spring, Gunma Prefecture, Kanto Region, Honshu Island, Japan
Year of Discovery:1982

Physical Properties of Minamiite

Hardness (Mohs):3 - 4
Density (calculated):2 g/cm3

Crystallography of Minamiite

Crystal System:Trigonal
Class (H-M):3m (3 2/m) - Hexagonal Scalenohedral
Space Group:R3m (R3 2/m)
Cell Parameters:a = 6.98Å, c = 33.49Å
Ratio:a:c = 1 : 4.798
Unit Cell Volume:V 1,413.05 ų (Calculated from Unit Cell)

Chemical Properties of Minamiite

Formula:
(Na,Ca
 
0.5
,K)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2
Essential elements:Al, H, Na, O, S
All elements listed in formula:Al, Ca, H, K, Na, O, S

Relationship of Minamiite to other Species

Related Minerals - Nickel-Strunz Grouping):
7.BC.05D'Ansite
Na
 
21
Mg(SO
 
4
)
 
10
Cl
 
3
7.BC.10Alunite
KAl
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Ammonioalunite
(NH
 
4
)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Ammoniojarosite
(NH
 
4
)Fe
3+
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Argentojarosite
AgFe
3+
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Beaverite
Pb(Fe
3+
 
,Cu,Al)
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Dorallcharite
(Tl,K)Fe
3+
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Huangite
CaAl
 
6
[(OH)
 
3
|SO
 
4
]
 
4
7.BC.10Hydroniumjarosite
(H
 
3
O)Fe
3+
3
(SO
 
4
)
 
2
(OH)
 
6
7.BC.10Jarosite
KFe
3+
 
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Natroalunite
(Na,K)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Natrojarosite
NaFe
 
3
[(OH)
 
3
|SO
 
4
]
 
2
7.BC.10Osarizawaite
Pb(Al,Cu)
 
3
[(OH,H
 
2
O)
 
3
|SO
 
4
]
 
2
7.BC.10Plumbojarosite
PbFe
3+
6
[(OH)
 
3
|SO
 
4
]
 
4
7.BC.10Walthierite
BaAl
 
6
[(OH)
 
3
|SO
 
4
]
 
4
7.BC.15Ye'elimite
Ca
 
4
Al
 
6
[O
 
12
|SO
 
4
]
7.BC.20Atlasovite
K(BiO)Cu
 
6
Fe
3+
 
[Cl|O
 
3
|(SO
 
4
)
 
5
]
7.BC.20Nabokoite
KCu
 
7
Te
4+
 
[Cl|O
 
4
|(SO
 
4
)
 
5
]
7.BC.25Chlorothionite
K
 
2
Cu[Cl
 
2
|SO
 
4
]
7.BC.30Euchlorine
KNaCu
 
3
[O|(SO
 
4
)
 
3
]
7.BC.30Fedotovite
K
 
2
Cu
 
3
[O|(SO
 
4
)
 
3
]
7.BC.35Kamchatkite
KCu
 
3
[O|Cl|(SO
 
4
)
 
2
]
7.BC.40Piypite
K
 
2
Cu
 
2
[O|(SO
 
4
)
 
2
]
7.BC.45Klyuchevskite
K
 
3
Cu
 
3
(Fe
3+
 
,Al)[O|(SO
 
4
)
 
2
]
 
2
7.BC.45Alumoklyuchevskite
K
 
3
Cu
 
3
(Al,Fe
3+
 
)[O|(SO
 
4
)
 
2
]
 
2
7.BC.50Caledonite
Cu
 
2
Pb
 
5
[(OH)
 
6
|CO
 
3
|(SO
 
4
)
 
3
]
7.BC.55Wherryite
Pb
 
4
CuCO
 
3
(SO
 
4
)
 
2
(Cl,OH)
 
2
O
7.BC.60Mammothite
Pb
 
6
Cu
 
4
AlSb[(OH)
 
9
|Cl
 
2
|SO
 
4
]
 
2
7.BC.65Linarite
PbCu[(OH)
 
2
|SO
 
4
]
7.BC.65Schmiederite
Pb
 
2
Cu
 
2
[(OH)
 
4
|SeO
 
3
|SeO
 
4
]
7.BC.65Munakataite
Pb
 
2
Cu
 
2
(Se
4+
 
O
 
3
)(SO
 
4
)(OH)
 
4
7.BC.70Chenite
Pb
 
4
Cu[(OH)
 
3
|SO
 
4
]
 
2
7.BC.75Krivovichevite
Pb
 
3
[Al(OH)
 
6
](SO
 
4
)(OH)
7.BC.80Anhydrokainite
KMgClSO
 
4
Related Minerals - Hey's Index Grouping:
25.6.1Rostite
Al[OH|SO
 
4
] · 5H
 
2
O
25.6.2Jurbanite
Al[OH|SO
 
4
] · 5H
 
2
O
25.6.3Khademite
Al[F|SO
 
4
] · 5H
 
2
O
25.6.4Meta-aluminite
Al
 
2
[(OH)
 
4
|SO
 
4
] · 5H
 
2
O
25.6.5Aluminite
Al
 
2
[(OH)
 
4
|SO
 
4
] · 7H
 
2
O
25.6.6Meta-alunogen
Al
 
2
(SO
 
4
)
 
3
·12H
 
2
O
25.6.7Alunogen
Al
 
2
(SO
 
4
)
 
3
·17H
 
2
O
25.6.8Felsőbányaite
Al
 
4
[(OH)
 
10
|SO
 
4
] · 5H
 
2
O
25.6.9Basaluminite
25.6.10Hydrobasaluminite
Al
 
4
[(OH)
 
10
|SO
 
4
] · 12-36H
 
2
O
25.6.11Zaherite
Al
 
12
[(OH)
 
26
|(SO
 
4
)
 
5
] · 20H
 
2
O
25.6.12Tamarugite
NaAl(SO
 
4
)
 
2
·6H
 
2
O
25.6.13Mendozite
NaAl(SO
 
4
)
 
2
·11H
 
2
O
25.6.14Alum-(Na)
NaAl[SO
 
4
]
 
2
 · 12H
 
2
O
25.6.15Natroalunite
(Na,K)Al
 
3
[(OH)
 
3
|SO
 
4
]
 
2
25.6.16Kalinite
KAl(SO
 
4
)
 
2
·11H
 
2
O Not confirmed
25.6.17Alum-(K)
KAl[SO
 
4
]
 
2
 · 12H
 
2
O
25.6.18Alunite
KAl
 
3
[(OH)
 
3
|SO
 
4
]
 
2
25.6.20Tschermigite
(NH
 
4
)Al[SO
 
4
]
 
2
 · 12H
 
2
O

Other Names for Minamiite

Synonyms:
IMA1980-095
German names:
Minamiit
Russian names:
Минамиит
Spanish names:
Minamiita

Other Information

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

References for Minamiite

Reference List:Ossaka, J., Hirabahashi, J.-I., Okada, K., Kobayashi, R. & Hayashi, T. (1982): Crystal structure of minamiite, a new mineral of the alunite group. American Mineralogist: 67: 114-119.

Internet Links for Minamiite

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    Localities for Minamiite

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Chile
     
    • Tarapacá Region
      • Iquique Province
        • Pampa del Tamarugal
    		Peter G. Seroka collection
    Japan
     
    • Honshu Island
      • Kanto Region
        • Gunma Prefecture
    		Amer.Min.(1982) 67, 114-119
    Mineral and/or Locality
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