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Huangite Mineral Data

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General Huangite Information

Help on Chemical  Formula: Chemical Formula: Ca0.5Al3(SO4)2(OH)6
Help on Composition: Composition: Molecular Weight = 395.15 gm
   Calcium    5.07 %  Ca    7.10 % CaO
   Aluminum  20.48 %  Al   38.70 % Al2O3
   Hydrogen   1.53 %  H    13.68 % H2O
   Sulfur    16.23 %  S    40.52 % SO3
   Oxygen    56.68 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca0.5Al3(SO4)2(OH)6
Help on Environment: Environment: Product of acid sulfate hydrothermal alteration of rhyolite tuffs and andesites.
Help on IMA Status: IMA Status: Approved IMA 1992
Help on Locality: Locality: El Indio mine, El Indio-Tambo district, east of La Serena, Coquimbo, Chile. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Yunhui Huang (1926- ), Chinese mineralogist, Institute of Mineral Deposit Geology and Mineral Resources, Beijing, China
Help on Name Pronunciation: Name Pronunciation: Huangite Say HUANGITE
Help on Synonym: Synonym: IMA1991-009
 

Huangite Image

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  Huangite

Comments: BSE image of alunite (light gray), natroaluminite (dark gray), minamiite (gray slender zone banded by natroaluminite), and huangite (medium gray).
Location: Sulfuric altered andesite, Okumanza, Gunma Prefecture, Japan. Scale: Picture Size 0.31 x 0.24 mm.
© Mineralogical Journal

Huangite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:4.79979
Help on Cell Dimensions: Cell Dimensions: a = 6.983, c = 33.517, Z = 6; V = 1,415.40 Den(Calc)= 2.78
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): 2.97(1), 4.91(0.75), 2.231(0.51),
 

Physical Properties of Huangite

Help on Cleavage: Cleavage: {???} Perfect
Help on Color: Color: White, Yellowish.
Help on Diaphaneity: Diaphaneity: Transparent
Help on Hardness: Hardness: 3-4 - Calcite-Fluorite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Huangite

Help on Optical Data: Optical Data: NCalc= 1.59 - from Gladstone-Dale relationship (KC = 0.2132) where Ncalc=Dcalc*KC+1
 

Calculated Properties of Huangite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.80 gm/cc
note: Specific Gravity of Huangite =2.78 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0015600612
Boson Index = 0.9984399388
Help on Photoelectric: Photoelectric: PEHuangite = 2.23 barns/electron
U=PEHuangite x rElectron Density= 6.24 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Huangite is Not Radioactive
 

Huangite Classification

Help on  Dana Class: Dana Class: 30.02.04.08 (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 Huangite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Am.Min.,Vol.77,p1275-1284,1992)
Help on See Also: See Also: Links to other databases for Huangite :
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

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Print or Cut-and-Paste your Huangite Specimen Label here :

Huangite

Ca0.5Al3(SO4)2(OH)6
Dana No: 30.02.04.08 Strunz No: 07.BC.10
Locality:

 

Notes:

 

 
   
 


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