Mindat Logo

Shigaite

This page is currently not sponsored. Click here to sponsor this page.



Formula:
Mn
 
6
Al
 
3
(OH)
 
18
[Na(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
System:TrigonalColour:Deep yellow with black, ...
Member of:Wermlandite Group > Hydrotalcite Supergroup
Name:Named after its discovery locality.


The Mn analogue of nikischerite.

Classification of Shigaite

IMA status:Approved
Strunz 8th edition ID:6/D.14-22
Nickel-Strunz 10th (pending) edition ID: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
Dana 8th edition ID:31.1.2.1

31 : HYDRATED SULFATES CONTAINING HYDROXYL OR HALOGEN
1 : (AB)m(XO4)pZq·xH2O, where m:p > 6:1
Hey's CIM Ref.:25.9.8

25 : Sulphates
9 : Sulphates of Mn
mindat.org URL:http://www.mindat.org/min-3638.html
Please feel free to link to this page.

Type Occurrence of Shigaite

Type Locality:Ioi mine, Ritto City, Shiga Prefecture, Kinki Region, Honshu Island, Japan
Year of Discovery:1985

Physical Properties of Shigaite

Lustre:Vitreous, Dull
Diaphaneity (Transparency):Transparent
Colour:Deep yellow with black, inhomogenous inclusions

Crystallography of Shigaite

Crystal System:Trigonal
Cell Parameters:a = 9.51Å, c = 32.83Å
Ratio:a:c = 1 : 3.452
Unit Cell Volume:V 2,571.36 ų (Calculated from Unit Cell)

Optical Data of Shigaite

Type:Uniaxial (-)

Chemical Properties of Shigaite

Formula:
Mn
 
6
Al
 
3
(OH)
 
18
[Na(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
Simplified for copy/paste:Mn6Al3(OH)18[Na(H2O)6][SO4]2·6H2O
Essential elements:Al, H, Mn, Na, O, S
All elements listed in formula:Al, H, Mn, Na, O, S

Relationship of Shigaite to other Species

Member of:Wermlandite Group > Hydrotalcite Supergroup
Other Members of Group:

- +
Karchevskyite
Mg
 
18
Al
 
9
(OH)
 
54
Sr
 
2
(CO
 
3
)
 
9
(H
 
2
O)
 
6
(H
 
3
O)
 
5
Motukoreaite
Mg
 
6
Al
 
3
(OH)
 
18
[Na(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
Natroglaucocerinite
Na
 
x
Zn
 
8-y
Al
 
y
(SO
 
4
)
 
(x+y)/2
(OH)
 
16
· 6H
 
2
O
Nikischerite
Fe
2+
6
Al
 
3
(OH)
 
18
[Na(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
Wermlandite
Mg
 
7
Al
 
2
(OH)
 
18
[Ca(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
Related Minerals - Nickel-Strunz Grouping):

- +
7.DD.05Felsőbányaite
Al
 
4
(SO
 
4
)(OH)
 
10
· 4H
 
2
O
7.DD.10Langite
Cu
 
4
(SO
 
4
)(OH)
 
6
· 2H
 
2
O
7.DD.10Posnjakite
Cu
 
4
(SO
 
4
)(OH)
 
6
· H
 
2
O
7.DD.10Wroewolfeite
Cu
 
4
(SO
 
4
)(OH)
 
6
· 2H
 
2
O
7.DD.15Spangolite
Cu
 
6
Al(SO
 
4
)(OH)
 
12
Cl · 3H
 
2
O
7.DD.20Ktenasite
Zn(Cu,Zn)
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 6H
 
2
O
7.DD.25Christelite
Cu
 
2
Zn
 
3
(SO
 
4
)
 
2
(OH)
 
6
· 4H
 
2
O
7.DD.30Campigliaite
Mn
2+
 
Cu
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 4H
 
2
O
7.DD.30Devilline
CaCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 3H
 
2
O
7.DD.30Orthoserpierite
Ca(Cu,Zn)
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 3H
 
2
O
7.DD.30Serpierite
Ca(Cu,Zn)
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 3H
 
2
O
7.DD.30Niedermayrite
CdCu
 
4
(SO
 
4
)
 
2
(OH)
 
6
· 4H
 
2
O
7.DD.30Edwardsite
Cu
 
3
Cd
 
2
(SO
 
4
)
 
2
(OH)
 
6
·4H
 
2
O
7.DD.35Carrboydite
[(Ni
 
1-x
Al
 
x
)(OH)
 
2
][SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Glaucocerinite
(Zn
 
1-x
Al
 
x
)(OH)
 
2
(SO
 
4
)
 
x/2
· nH
 
2
O
7.DD.35Honessite
(Ni
 
1-x
Fe
3+
x
)(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Hydrohonessite
(Ni
 
1-x
Fe
3+
x
)(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Motukoreaite
Mg
 
6
Al
 
3
(OH)
 
18
[Na(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
7.DD.35Mountkeithite
[(Mg
 
1-x
Fe
3+
x
)(OH)
 
2
][SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Wermlandite
Mg
 
7
Al
 
2
(OH)
 
18
[Ca(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
7.DD.35Woodwardite
Cu
 
1-x
Al
 
x
(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Zincaluminite
Zn
 
6
Al
 
6
(SO
 
4
)
 
2
(OH)
 
16
· 5H
 
2
O
7.DD.35Hydrowoodwardite
(Cu
 
1-x
Al
 
x
)(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Zincowoodwardite
Zn
 
1-x
Al
 
x
(OH)
 
2
[SO
 
4
]
 
x/2
· nH
 
2
O
7.DD.35Natroglaucocerinite
Na
 
x
Zn
 
8-y
Al
 
y
(SO
 
4
)
 
(x+y)/2
(OH)
 
16
· 6H
 
2
O
7.DD.35Nikischerite
Fe
2+
6
Al
 
3
(OH)
 
18
[Na(H
 
2
O)
 
6
][SO
 
4
]
 
2
· 6H
 
2
O
7.DD.40Lawsonbauerite
(Mn
2+
 
,Mg)
 
9
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
22
· 8H
 
2
O
7.DD.40Torreyite
(Mg,Mn
2+
 
)
 
7
 
2
Mn
2+
2
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
22
· 8H
 
2
O
7.DD.45Mooreite
Mg
 
9
 
2
Mn
 
2
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
26
· 8H
 
2
O
7.DD.50Namuwite
(Zn,Cu)
 
4
(SO
 
4
)(OH)
 
6
· 4H
 
2
O
7.DD.55Bechererite
(Zn,Cu)
 
6
Zn
 
2
(SO
 
4
,HSiO
 
4
)
 
2
(OH)
 
12
7.DD.60Ramsbeckite
(Cu,Zn)
 
15
(SO
 
4
)
 
4
(OH)
 
22
· 6H
 
2
O
7.DD.65Vonbezingite
Ca
 
6
Cu
 
3
(SO
 
4
)
 
3
(OH)
 
12
· 2H
 
2
O
7.DD.70Redgillite
Cu
 
6
(SO
 
4
)(OH)
 
10
· H
 
2
O
7.DD.75Chalcoalumite
CuAl
 
4
(SO
 
4
)(OH)
 
12
· 3H
 
2
O
7.DD.75Nickelalumite
(Ni,Cu)Al
 
4
(SO
 
4
,(NO
 
3
)
 
2
)(OH)
 
12
· 3H
 
2
O
7.DD.75Kyrgyzstanite
ZnAl
 
4
(SO
 
4
)(OH)
 
12
·3H
 
2
O
7.DD.80Guarinoite
(Zn,Co,Ni)
 
6
(SO
 
4
)(OH,Cl)
 
10
· 5H
 
2
O
7.DD.80Schulenbergite
(Cu,Zn)
 
7
(SO
 
4
,CO
 
3
)
 
2
(OH)
 
10
· 3H
 
2
O
7.DD.80Thérèsemagnanite
(Co,Zn,Ni)
 
6
(SO
 
4
)(OH,Cl)
 
10
· 8H
 
2
O
7.DD.80UM1992-30-SO:CCuHZn
(Zn,Cu)
 
7
(SO
 
4
,CO
 
3
)
 
2
(OH)
 
10
· 3H
 
2
O
7.DD.85Montetrisaite
Cu
 
6
(SO
 
4
)(OH)
 
10
· 2H
 
2
O
Related Minerals - Hey's Index Grouping:

- +
25.9.1Szmikite
MnSO
 
4
· H
 
2
O
25.9.2Jôkokuite
MnSO
 
4
· 5H
 
2
O
25.9.3Mallardite
MnSO
 
4
· 7H
 
2
O
25.9.4Manganolangbeinite
K
 
2
Mn
 
2
(SO
 
4
)
 
3
25.9.5Chvaleticeite
(Mn,Mg)SO
 
4
· 6H
 
2
O
25.9.6Despujolsite
Ca
 
3
Mn
4+
 
(SO
 
4
)
 
2
(OH)
 
6
· 3H
 
2
O
25.9.7Apjohnite
Mn
2+
 
Al
 
2
(SO
 
4
)
 
4
· 22H
 
2
O
25.9.9Ilesite
(Mn,Zn,Fe)SO
 
4
· 4H
 
2
O
25.9.10Mooreite
Mg
 
9
 
2
Mn
 
2
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
26
· 8H
 
2
O
25.9.11Torreyite
(Mg,Mn
2+
 
)
 
7
 
2
Mn
2+
2
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
22
· 8H
 
2
O
25.9.12Lawsonbauerite
(Mn
2+
 
,Mg)
 
9
Zn
 
4
(SO
 
4
)
 
2
(OH)
 
22
· 8H
 
2
O
25.9.13Dietrichite
(Zn,Fe
2+
 
,Mn
2+
 
)Al
 
2
(SO
 
4
)
 
4
· 22H
 
2
O

Other Names for Shigaite

Synonyms:
IMA1984-057
Other Languages:
German:Shigait
Russian:Шигаит
Simplified Chinese:羟铝锰矾
黄铝锰矾
黄铝锰矾矿
Spanish:Shigaita
Traditional Chinese:羥鋁錳礬
黃鋁錳礬
黃鋁錳礬礦

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 Shigaite

Reference List:

- +
American Mineralogist (1986): 71: 1546.

Canadian Mineralogist (1996): 34: 91-98.

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

Internet Links for Shigaite

Search Engines:
  • Look for Shigaite on Google
  • Look for Shigaite images on Google
  • External Links:
  • Look for Shigaite on Webmineral
  • Look for Shigaite on Athena Mineralogy
  • Look for Shigaite on Wikipedia
  • Look for Shigaite on Mineralien Atlas
  • Raman and XRD data at RRUFF project
  • American Mineralogist Crystal Structure Database
  • Shigaite details from Handbook of Mineralogy (PDF)
  • Mineral Dealers:
  • Buy fine minerals and gemstones from Pala International
  • Buy from McDougall Minerals
  • Fabre Minerals - search for Shigaite specimens
  • Buy RARE Minerals from Rocks of Africa
  • Find Shigaite on www.crystalclassics.co.uk
  • Mineral Classics - Worldwide Collector Quality Minerals and Gems
  • SpiriferMinerals.com - high quality low prices
  • Buy from David K Joyce minerals
  • Buy minerals from YourMineralCollection
  • Wilensky Fine Minerals
  • Rare and Unusual minerals at Mineralogical Research Company
  • Fine and rare minerals from mintreasure.com
  • Specimens:The following Shigaite specimens are currently listed for sale on minfind.com.
    Jobs:
  • Mining & Geology Jobs
  • Localities for Shigaite

    The 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.
    (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.
    Australia
     
    • South Australia
      • Eyre Peninsula
        • Middleback Range
          • Iron Knob
    Pring, A., Francis, G. & Birch, W. D. (1992): Nissonite, namibite, and other additions to the mineral suite from Iron Monarch, South Australia. Australian Mineral. 6, 31-39.
    Canada
     
    • Québec
      • Montérégie
        • La Vallée-du-Richelieu RCM
          • Mont Saint-Hilaire
    HORVÁTH, L., PFENNINGER HORVÁTH, E. (2000) I minerali di Mont-Saint-Hilaire (Québec, Canada) Rivista Mineralogica Italiana, XXIV, 140-202 (in Italian with English summary).
    Japan
     
    • Honshu Island
      • Kinki Region
        • Shiga Prefecture
          • Ritto City
    N.Jahrb.Min.,Mh.(1985) 453-457
    South Africa
     
    • Northern Cape Province
      • Kalahari manganese field
        • Hotazel
        • Kuruman
          • N'Chwaning Mines
    Cairncross, B. & Balayer, P. (2007): Neufund: Shigait aus den Kalahari-Manganfeldern, Südafrika. LAPIS 32 (4): 23-26 + 50
    Minerals of South Africa
    USA
     
    • Michigan
      • Iron Co.
        • Menominee iron range
          • Mineral Hills
    Mineralogy of Michigan (2004) Heinrich & Robinson
    Shawn Carlson (2010) Mineral News, 26, #11, 1-2 & 9-10.
          • Stambaugh
    A. E. Seaman Mineral Museum collection.
    A. E. Seaman Mineral Museum collection.
    Mineral and/or Locality  
    Search Google  
    Copyright © Jolyon Ralph and Ida Chau 1993-2014. Site Map. Locality, mineral & photograph data are the copyright of the individuals who submitted them. Site hosted & developed by Jolyon Ralph. Mindat.org is an online information resource dedicated to providing free mineralogical information to all. Mindat relies on the contributions of thousands of members and supporters. Mindat does not offer minerals for sale. If you would like to add information to improve the quality of our database, then click here to register.
    Current server date and time: March 23, 2014 09:20:31
    Mineral and Locality Search
    Mineral:
    and/or Locality:
    Options
    Fade toolbar when not in focusFix toolbar to bottom of page
    Hide Social Media Links
    Slideshow frame delay seconds