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Ilesite Mineral Data

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General Ilesite Information

Help on Chemical  Formula: Chemical Formula: (Mn,Zn,Fe++)SO4•4(H2O)
Help on Composition: Composition: Molecular Weight = 226.29 gm
   Manganese  14.57 %  Mn   18.81 % MnO
   Zinc        8.67 %  Zn   10.79 % ZnO
   Iron        2.47 %  Fe    3.17 % FeO
   Hydrogen    3.56 %  H    31.84 % H2O
   Sulfur     14.17 %  S    35.38 % SO3
   Oxygen     56.56 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+0.6Zn0.3Fe2+0.1(SO4)•4(H2O)
Help on Environment: Environment: Secondary mineral formed by oxidiation of Mn-bearing sulfide minerals.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1881
Help on Locality: Locality: Sulfide veins at the head of Hall Valley, Park County, Colorado, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Malvern W. Iles (1853-1890), American metallurgist, Denver, Colorado.
Help on Name Pronunciation: Name Pronunciation: Ilesite Say ILESITE
 

Ilesite Image

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  Ilesite

Comments: Botryoidal to earthy, cream-colored ilesite.
Location: Chvaletice, Kutná Hora, Stredoceský Kraj, Bohemia, Czech Republic. Scale: Picture size 4 mm.
© Thomas Witzke / Abraxas-Verlag

Ilesite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4375:1:0.5821
Help on Cell Dimensions: Cell Dimensions: a = 6.02, b = 13.76, c = 8.01, Z = 4; beta = 90.8° V = 663.45 Den(Calc)= 2.27
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.48(1), 3.96(0.65), 5.56(0.65),
 

Physical Properties of Ilesite

Help on Color: Color: Green, Greenish white, White.
Help on Density: Density: 2.261
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Hardness: Hardness: 2-3 - Gypsum-Calcite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Ilesite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.01 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2278,KPDmeas= 0.2287,KC= 0.231
Ncalc = 1.52
Help on Optical Data: Optical Data: Biaxial (-), a=1.511, b=1.519, g=1.521, bire=0.0100
 

Calculated Properties of Ilesite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.29 gm/cc
note: Specific Gravity of Ilesite =2.26 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0054171149
Boson Index = 0.9945828851
Help on Photoelectric: Photoelectric: PEIlesite = 9.31 barns/electron
U=PEIlesite x rElectron Density= 21.33 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Ilesite is Not Radioactive
 

Ilesite Classification

Help on  Dana Class: Dana Class: 29.06.06.03 (29)Hydrated Acid and Sulfates
  (29.06)where A XO4 � x(H2O)
  (29.06.06)Rozenite Group (Monoclinic)
 
29.06.06.01 Rozenite FeSO4•4(H2O) P 21/n 2/m
 
29.06.06.02 Starkeyite MgSO4•4(H2O) P 21/n 2/m
 
29.06.06.03 Ilesite (Mn,Zn,Fe)SO4•4(H2O) P 21/n 2/m
 
29.06.06.04 Aplowite (Co,Mn,Ni)SO4•4(H2O) P 21/m 2/m
 
29.06.06.05 Boyleite (Zn,Mg)SO4•4(H2O) P 21/n 2/m
 
29.06.06.06 IMA2002-034! CdSO4•4(H2O) P 21/n 2/m
Help on  Strunz Class: Strunz Class: 07.CB.15 07 - SULFATES (SELENATES, TELLURATES)
  07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O
  07.CB -With only medium-sized cations
 
07.CB.15 Boyleite (Zn,Mg)SO4•4(H2O) P 21/n 2/m
 
07.CB.15 Aplowite (Co,Mn,Ni)SO4•4(H2O) P 21/m 2/m
 
07.CB.15 Ilesite (Mn,Zn,Fe)SO4•4(H2O) P 21/n 2/m
 
07.CB.15 Rozenite FeSO4•4(H2O) P 21/n 2/m
 
07.CB.15 Starkeyite MgSO4•4(H2O) P 21/n 2/m
 
07.CB.15 IMA2002-034! CdSO4•4(H2O) P 21/n 2/m
 

Other Ilesite Information

Help on References: References: PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Ilesite :
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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Print or Cut-and-Paste your Ilesite Specimen Label here :

Ilesite

(Mn,Zn,Fe++)SO4•4(H2O)
Dana No: 29.06.06.03 Strunz No: 07.CB.15
Locality:

 

Notes:

 

 
   
 


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