Mineralogy Database

Szomolnokite Mineral Data

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General Szomolnokite Information

Help on Chemical  Formula: Chemical Formula: Fe++SO4•(H2O)
Help on Composition: Composition: Molecular Weight = 169.93 gm
   Iron      32.87 %  Fe   42.28 % FeO
   Hydrogen   1.19 %  H    10.60 % H2O
   Sulfur    18.87 %  S    47.12 % SO3
   Oxygen    47.08 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe2+(SO4)•(H2O)
Help on Environment: Environment: Secondary mineral formed in pyrite-rich oxidized sulfide deposits, typically under highly acid and arid conditions.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1877
Help on Locality: Locality: Smolnik (Szomolnok), 16 km northeast of Roznava, Slovakia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Szomolnokite + Pronunciation Say SZOMOLNOKITE
Help on Synonym: Synonym: ICSD 71345
  PDF 45-1365
 

Szomolnokite Image

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  Szomolnokite   Voltaite

Comments: Whitish crystalline crust of voltaite on crystals of brown szomolnokite.
Location: Alcaparrosa Mine, Cerritos Bayos, Chile. Scale: Picture size 1 cm.
© John Veevaert

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  Szomolnokite   Halotrichite

Comments: Tan powdery szomolnokite crust on silky fibrous halotrichite with yellow metavoltine.
Location: Markey Mine, Red Canyon, San Juan County, Utah, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Szomolnokite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0208:1:0.9538
Help on Cell Dimensions: Cell Dimensions: a = 7.624, b = 7.468, c = 7.123, Z = 4; beta = 115.867° V = 364.92 Den(Calc)= 3.09
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: A2/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.44(1), 3.12(0.4), 2.52(0.35),
 

Physical Properties of Szomolnokite

Help on Cleavage: Cleavage: {???} Indistinct
Help on Color: Color: Bluish, Colorless, Yellow, Yellow brown, Light blue.
Help on Density: Density: 3.03 - 3.07, Average = 3.05
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Brittle - Conchoidal - Very brittle fracture producing small, conchoidal fragments.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Szomolnokite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.018 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2025,KPDmeas= 0.2051,KC= 0.1989
Ncalc = 1.6 - 1.61
Help on Optical Data: Optical Data: Biaxial (+), a=1.591, b=1.623, g=1.663, bire=0.0720, 2V(Calc)=86, 2V(Meas)=80.
 

Calculated Properties of Szomolnokite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.05 gm/cc
note: Specific Gravity of Szomolnokite =3.09 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0086105327
Boson Index = 0.9913894673
Help on Photoelectric: Photoelectric: PESzomolnokite = 10.85 barns/electron
U=PESzomolnokite x rElectron Density= 33.14 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Szomolnokite is Not Radioactive
 

Szomolnokite Classification

Help on  Dana Class: Dana Class: 29.06.02.02 (29)Hydrated Acid and Sulfates
  (29.06)where A XO4 � x(H2O)
  (29.06.02)Kieserite Group (Mono-hydrates)
 
29.06.02.01 Kieserite MgSO4•(H2O) C 2/c 2/m
 
29.06.02.02 Szomolnokite FeSO4•(H2O) A2/a 2/m
 
29.06.02.03 Szmikite MnSO4•(H2O) A2/a 2/m
 
29.06.02.04 Poitevinite (Cu,Fe,Zn)SO4•(H2O) P1 1
 
29.06.02.05 Gunningite (Zn,Mn)SO4•(H2O) A2/a 2/m
 
29.06.02.06 Dwornikite (Ni,Fe)SO4•(H2O) C 2/c 2/m
 
29.06.02.07 Cobaltkieserite! CoSO4•H2O C 2/c 2/m
Help on  Strunz Class: Strunz Class: 07.CB.05 07 - SULFATES (SELENATES, TELLURATES)
  07.C - Sulfates (selenates, etc.) without Additional Anions, with H2O
  07.CB -With only medium-sized cations
 
07.CB.05 Gunningite (Zn,Mn)SO4•(H2O) A2/a 2/m
 
07.CB.05 Dwornikite (Ni,Fe)SO4•(H2O) C 2/c 2/m
 
07.CB.05 Kieserite MgSO4•(H2O) C 2/c 2/m
 
07.CB.05 Poitevinite (Cu,Fe,Zn)SO4•(H2O) P1 1
 
07.CB.05 Szomolnokite FeSO4•(H2O) A2/a 2/m
 
07.CB.05 Szmikite MnSO4•(H2O) A2/a 2/m
 
07.CB.05 Cobaltkieserite! CoSO4•H2O C 2/c 2/m
 

Other Szomolnokite Information

Help on References: References: NAME( AntBidBlaNic5) 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 Szomolnokite :
1 - Alkali-Nuts(English)
2 - Alkali-Nuts(Francais)
3 - Am. Min. Crystal Structure Database
4 - Athena
5 - EUROmin Project
6 - Ecole des Mines de Paris
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST

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

Szomolnokite

Fe++SO4•(H2O)
Dana No: 29.06.02.02 Strunz No: 07.CB.05
Locality:

 

Notes:

 

 
   
 


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