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Stepanovite Mineral Data

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General Stepanovite Information

Help on Chemical  Formula: Chemical Formula: NaMgFe+++(C2O4)3•8-9(H2O)
Help on Composition: Composition: Molecular Weight = 520.33 gm
   Sodium      4.42 %  Na    5.96 % Na2O
   Magnesium   4.67 %  Mg    7.75 % MgO
   Iron       10.73 %  Fe   15.35 % Fe2O3
   Hydrogen    3.29 %  H    29.43 % H2O
   Carbon     13.85 %  C    41.52 % C2O3
   Oxygen     63.03 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: NaMgFe3+(C2O4)3•8.5(H2O)
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1953
Help on Locality: Locality: Tyllakh coal deposit, Lena River, Siberia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Namde for Pavel Ivanovich Stepanov (1880-1047), Russian geologist.
Help on Name Pronunciation: Name Pronunciation: Stepanovite + Pronunciation Say STEPANOVITE

Stepanovite Image

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Comments: Translucent yellow crystalline stepanovite fragment.
Location: Chai-Tumus, Republic of Sakha, Siberia, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Stepanovite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:3.72662
Help on Cell Dimensions: Cell Dimensions: a = 9.84, c = 36.67, Z = 6; V = 3,074.91 Den(Calc)= 1.69
Help on Crystal System: Crystal System: Trigonal Space Group: Unk

Physical Properties of Stepanovite

Help on Cleavage: Cleavage: None
Help on Color: Color: Green, Yellow green.
Help on Density: Density: 1.69
Help on Diaphaneity: Diaphaneity: Transparent to Translucent
Help on Fracture: Fracture: Irregular - Flat surfaces (not cleavage) fractured in an irregular pattern.
Help on Habit: Habit: Aggregates - Made of numerous individual crystals or clusters.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Water Soluble - Water soluble mineral.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luster: Luster: Vitreous (Glassy)

Optical Properties of Stepanovite

Help on Dichroism (e): Dichroism (e): colorless.
Help on Dichroism (w): Dichroism (w): yellowish green.
Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.574 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.574 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2757,KPDmeas= 0.2757,KC= 0.1752
Ncalc = 1.3
Help on Optical Data: Optical Data: Uniaxial (-), e=1.417, w=1.515, bire=0.0980.

Calculated Properties of Stepanovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.73 gm/cc
note: Specific Gravity of Stepanovite =1.69 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0087774735
Boson Index = 0.9912225265
Help on Photoelectric: Photoelectric: PEStepanovite = 3.47 barns/electron
U=PEStepanovite x rElectron Density= 6.00 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Stepanovite is Not Radioactive

Stepanovite Classification

Help on  Dana Class: Dana Class: (50)Salts of Organic Acids
  (50.01.07)Stepanovite Group Stepanovite NaMgFe(C2O4)3•8-9(H2O) Unk Trig Zhemchuzhnikovite NaMg(Al,Fe)(C2O4)3•8(H2O) Unk Trig
Help on  Strunz Class: Strunz Class: 10.AB.20 10 - ORGANIC COMPOUNDS
  10.A - Salts of Organic Acids
  10.AB -Oxalates
10.AB.20 Stepanovite NaMgFe(C2O4)3•8-9(H2O) Unk Trig

Other Stepanovite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Stepanovite :
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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Dana No: Strunz No: 10.AB.20





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