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Minamiite Mineral Data

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General Minamiite Information

Help on Chemical  Formula: Chemical Formula: (Na,Ca,K)Al3(SO4)2(OH)6
Help on Composition: Composition: Molecular Weight = 404.84 gm
   Potassium   0.97 %  K     1.16 % K2O
   Sodium      3.41 %  Na    4.59 % Na2O
   Calcium     2.97 %  Ca    4.16 % CaO
   Aluminum   19.99 %  Al   37.78 % Al2O3
   Hydrogen    1.49 %  H    13.35 % H2O
   Sulfur     15.84 %  S    39.55 % SO3
   Oxygen     55.33 %  O
             ______        ______ 
             100.00 %      100.59 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na0.6Ca0.3K0.1Al3(SO4)2(OH)6
Help on Environment: Environment: Hydrothermally altered labradorite andesite.
Help on IMA Status: IMA Status: Approved IMA 1982
Help on Locality: Locality: Okumanza, near the Kusatsu-Shirane volcano, Gumma Prefecture, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for A.E. Minami (1899-1977), who studied the hot springs around the Kusatsu-Shirane volcano, Japan.
Help on Name Pronunciation: Name Pronunciation: Minamiite + Pronunciation Say MINAMIITE
Help on Synonym: Synonym: ICSD 17051
  PDF 34-143
 

Minamiite Image

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  Minamiite

Comments: White granular powdery minamiite aggregate.
Location: Okumanza, Gumma, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Minamiite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:4.7973
Help on Cell Dimensions: Cell Dimensions: a = 6.981, c = 33.49, Z = 6; V = 1,413.45 Den(Calc)= 2.85
Help on Crystal System: Crystal System: Trigonal - Hexagonal Scalenohedral H-M Symbol (3 2/m) Space Group: R 3m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.959(1), 4.901(0.92), 2.975(0.47),
 

Physical Properties of Minamiite

Help on Color: Color: White.
Help on Density: Density: 2.8
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Minamiite

Help on Optical Data: Optical Data: NCalc= 1.61 - from Gladstone-Dale relationship (KC = 0.2133) where Ncalc=Dcalc*KC+1
NCalc= 1.6 - from Gladstone-Dale relationship (KC = 0.2133) where Ncalc=Dmeas*KC+1
 

Calculated Properties of Minamiite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.87 gm/cc
note: Specific Gravity of Minamiite =2.85 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0014971581
Boson Index = 0.9985028419
Help on Photoelectric: Photoelectric: PEMinamiite = 2.08 barns/electron
U=PEMinamiite x relectron= 5.96 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 14.03 (Gamma Ray American Petroleum Institute Units)
Concentration of Minamiite per GRapi unit = 7.13 (%)

Estimated Radioactivity from Minamiite - barely detectable

 

Minamiite Classification

Help on  Dana Class: Dana Class: 30.02.04.05 (30)Anhydrous Sulfates Containing Hydroxyl or Halogen
  (30.02)where (A B)2 XO4 Zq
  (30.02.04)Alunite Group (Alunite Subgroup)
 
30.02.04.01 Alunite KAl3(SO4)2(OH)6 R 3m, R 3m Trig
 
30.02.04.02 Natroalunite NaAl3(SO4)2(OH)6 R 3m 3 2/m
 
30.02.04.03 Schlossmacherite (H3O,Ca)Al3(AsO4,SO4)2(OH)6 R 3m 3 2/m
 
30.02.04.04 Osarizawaite PbCuAl2(SO4)2(OH)6 R 3m 3m
 
30.02.04.05 Minamiite (Na,Ca,K)Al3(SO4)2(OH)6 R 3m 3 2/m
 
30.02.04.06 Ammonioalunite (NH4)Al3(SO4)2(OH)6 R 3m 3 2/m
 
30.02.04.07 Walthierite Ba0.5Al3(SO4)2(OH)6 R 3m 3 2/m
 
30.02.04.08 Huangite Ca0.5Al3(SO4)2(OH)6 R 3m 3 2/m
Help on  Strunz Class: Strunz Class: 07.BC.10 07 - SULFATES (SELENATES, TELLURATES)
  07.B - Sulfates (selenates, etc.) with Additional Anions, without H2O
  07.BC -With medium-sized and large cations
 
07.BC.10 Alunite KAl3(SO4)2(OH)6 R 3m, R 3m Trig
 
07.BC.10 Ammonioalunite (NH4)Al3(SO4)2(OH)6 R 3m 3 2/m
 
07.BC.10 Ammoniojarosite (NH4)Fe3(SO4)2(OH)6 R 3m 3m
 
07.BC.10 Beaverite PbCu(Fe,Al)2(SO4)2(OH)6 R 3m 3m
 
07.BC.10 Argentojarosite AgFe3(SO4)2(OH)6 R 3m 3m
 
07.BC.10 Huangite Ca0.5Al3(SO4)2(OH)6 R 3m 3 2/m
 
07.BC.10 Dorallcharite (Tl,K)Fe3(SO4)2(OH)6 R 3m 3 2/m
 
07.BC.10 Jarosite KFe3(SO4)2(OH)6 R 3 3
 
07.BC.10 Hydroniumjarosite (H3O)Fe3(SO4)2(OH)6 R 3m 3m
 
07.BC.10 Minamiite (Na,Ca,K)Al3(SO4)2(OH)6 R 3m 3 2/m
 
07.BC.10 Natrojarosite NaFe3(SO4)2(OH)6 R 3m 3m
 
07.BC.10 Natroalunite NaAl3(SO4)2(OH)6 R 3m 3 2/m
 
07.BC.10 Osarizawaite PbCuAl2(SO4)2(OH)6 R 3m 3m
 
07.BC.10 Plumbojarosite PbFe6(SO4)4(OH)12 R 3m 3 2/m
 
07.BC.10 Schlossmacherite (H3O,Ca)Al3(AsO4,SO4)2(OH)6 R 3m 3 2/m
 
07.BC.10 Walthierite Ba0.5Al3(SO4)2(OH)6 R 3m 3 2/m
 

Other Minamiite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Minamiite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info
15 - WWW-MINCRYST

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Minamiite

(Na,Ca,K)Al3(SO4)2(OH)6
Dana No: 30.02.04.05 Strunz No: 07.BC.10
Locality:

 

Notes:

 

 
   
 


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