Ilesite Mineral Data

Ilesite Mineral Data +

General Ilesite Information

Chemical Formula:

(Mn,Zn,Fe++)SO4·4(H2O)

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

Empirical Formula:

Mn²⁺_0.6Zn_0.3Fe²⁺_0.1(SO₄)·4(H₂O)

Environment:

Secondary mineral formed by oxidiation of Mn-bearing sulfide minerals.

IMA Status:

Valid Species (Pre-IMA) 1881

Locality:

Sulfide veins at the head of Hall Valley, Park County, Colorado, USA. Link to MinDat.org Location Data.

Name Origin:

Named for Malvern W. Iles (1853-1890), American metallurgist, Denver, Colorado.

Ilesite Image

Images:

Ilesite

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

Ilesite Crystallography

Axial Ratios:

a:b:c =0.4375:1:0.5821

Cell Dimensions:

a = 6.02, b = 13.76, c = 8.01, Z = 4; beta = 90.8° V = 663.45 Den(Calc)= 2.27

Crystal System:

Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 2₁/n

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 4.48(1), 3.96(0.65), 5.56(0.65),

Crystal Structure:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
Help on Above

Held P , Bohaty L , Acta Crystallographica, Section E , 58 (2002) p.i121-i123, Manganese(II) sulfate tetrahydrate (ilesite), Locality: synthetic

Physical Properties of Ilesite

Color:

Green, Greenish white, White.

Density:

2.261

Diaphaniety:

Transparent

Habit:

Aggregates - Made of numerous individual crystals or clusters.

Habit:

Encrustations - Forms crust-like aggregates on matrix.

Hardness:

2-3 - Gypsum-Calcite

Luminescence:

Non-fluorescent.

Luster:

Vitreous (Glassy)

Magnetism:

Nonmagnetic

Streak:

white

Optical Properties of Ilesite

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

Optical Data:

Biaxial (-), a=1.511, b=1.519, g=1.521, bire=0.0100

Calculated Properties of Ilesite

Electron Density:

r_electron=2.29 gm/cc
note: r_Ilesite=2.26 gm/cc.

Fermion Index

Fermion Index = 0.00541
Boson Index = 0.99459

Photoelectric:

PE_Ilesite= 9.31 barns/electron
U=PE_Ilesite x r_electron= 21.33 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Ilesite is Not Radioactive

Ilesite Classification

Dana Class:

29.6.6.3 (29)Hydrated Acid and Sulfates

(29.6)where A XO4 · x(H2O)

(29.6.6)Rozenite Group (Monoclinic)

29.6.6.1 Rozenite FeSO4·4(H2O) P 2₁/n 2/m

29.6.6.2 Starkeyite MgSO4·4(H2O) P 2₁/n 2/m

29.6.6.3 Ilesite (Mn,Zn,Fe)SO4·4(H2O) P 2₁/n 2/m

29.6.6.4 Aplowite (Co,Mn,Ni)SO4·4(H2O) P 2₁/m 2/m

29.6.6.5 Boyleite (Zn,Mg)SO4·4(H2O) P 2₁/n 2/m

29.6.6.6 IMA2002-034! CdSO4·4(H2O) P 2₁/n 2/m

Strunz Class:

VI/C.03-30 VI - Sulfates,Chromates,Molybdates and Tungstates

VI/C - Water-bearing sulfates without unfamiliar anions. cations of medium size

VI/C.03 - Rozenite series, Starkeyite - Boyleite

VI/C.03-10 Starkeyite MgSO4·4(H2O) P 2₁/n 2/m

VI/C.03-20 Rozenite FeSO4·4(H2O) P 2₁/n 2/m

VI/C.03-30 Ilesite (Mn,Zn,Fe)SO4·4(H2O) P 2₁/n 2/m

VI/C.03-40 Aplowite (Co,Mn,Ni)SO4·4(H2O) P 2₁/m 2/m

VI/C.03-50 Boyleite (Zn,Mg)SO4·4(H2O) P 2₁/n 2/m

Other Ilesite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)

See Also:

Links to other databases for Ilesite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris

Search for Ilesite using:

[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Ilesite :
AA Mineral Specimens
A-Rocks Auction
Adams Minerals
B and L Minerals
Dakota Matrix
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Minernet.it
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Ilesite Mineral Data :

Ask about Ilesite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Ilesite

(Mn,Zn,Fe++)SO4·4(H2O)
Dana No: 29.6.6.3 Strunz No: VI/C.03-30
Locality:

Notes: