Mikasaite Mineral Data

Mikasaite Mineral Data
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General Mikasaite Information

Help on Chemical Formula: Chemical Formula: Fe+++2(SO4)3
Help on Composition: Composition: Molecular Weight = 399.88 gm
   Iron    27.93 %  Fe   39.93 % Fe2O3
   Sulfur  24.06 %  S    60.07 % SO3
   Oxygen  48.01 %  O
          ______        ______ 
          100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Fe3+2(SO4)3
Help on Environment: Environment: As a sublimation product around a coal-gas escape fracture in a coal-bearing formation.
Help on IMA Status: IMA Status: Approved IMA 1994
Help on Locality: Locality: Ikushunbetsu, Mikasa City, Hokkaido, Japan. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For its locality.
Help on Name Pronunciation: Name Pronunciation: Mikasaite + Pronunciation Say MIKASAITE
Help on Synonym: Synonym: ICSD 21018
  IMA1992-015
  PDF 47-1774
 

Mikasaite Image

Click Here for Larger Mikasaite Image in a New Browser Window Images:
Click Here for Larger Mikasaite Image

Mikasaite

Comments: Pale yellow to white platy crystalline mikasaite cluster.
Location: Ikushunbetsu, Mikassa, Hokkaido, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Mikasaite Crystallography
Help on Axial Ratios: Axial Ratios: a:c = 1:2.70147
Help on Cell Dimensions: Cell Dimensions: a = 8.14, c = 21.99, Z = 6; V = 1,261.84 Den(Calc)= 3.16
Help on Crystal System: Crystal System: Trigonal - RhombohedralH-M Symbol ( 3) Space Group: R 3
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.56(1), 5.99(0.28), 4.35(0.23),
Click Here for Large Mikasaite Structure Window Crystal Structure:

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drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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Christidis P C , Rentzeperis P J , Zeitschrift fur Kristallographie , 144 (1976) p.341-352, The crystal structure of rhombohedral Fe2(SO4)3, Sample: synthetic

 

Physical Properties of Mikasaite

Help on Color: Color: White, Light brown.
Help on Density: Density: 3.06
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Unknown - Minerals too small to observe fractures.
Help on Habit: Habit: Spherical - Spherical, rounded aggregates.
Help on Hardness: Hardness: 2 - Gypsum
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Earthy (Dull)
Help on Streak: Streak: white
 

Optical Properties of Mikasaite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.281 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.303 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1617,KPDmeas= 0.167,KC= 0.2321
Ncalc = 1.71 - 1.73
Help on Optical Data: Optical Data: Uniaxial (+), w=1.504, e=1.518, bire=0.0140.
 

Calculated Properties of Mikasaite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.00 gm/cc
note: Specific Gravity of Mikasaite =3.06 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0079561772
Boson Index = 0.9920438228
Help on Photoelectric: Photoelectric: PEMikasaite = 9.78 barns/electron
U=PEMikasaite x rElectron Density= 29.32 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Mikasaite is Not Radioactive
 

Mikasaite Classification
Help on Dana Class: Dana Class: 28.04.05.02 (28)Anhydrous Acid and Sulfates
  (28.04)with miscellaneous formulae
  (28.04.05)Dana Group
 
28.04.05.01 Millosevichite (Al,Fe)2(SO4)3 R 3 3
 
28.04.05.02 Mikasaite Fe2(SO4)3 R 3 3
Help on Strunz Class: Strunz Class: 07.AB.05 07 - SULFATES (SELENATES, TELLURATES)
  07.A - Sulfates (selenates, etc.) without Additional Anions, without H2O
  07.AB -With medium-sized cations
 
07.AB.05 Millosevichite (Al,Fe)2(SO4)3 R 3 3
 
07.AB.05 Mikasaite Fe2(SO4)3 R 3 3
 

Other Mikasaite Information
Help on References: References: NAME( MinRec) PHYS. PROP.(Am.Min.,Vol.80,p846,1995) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Mikasaite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - Mineralienatlas (Deutsch)
11 - Online Mineral Museum
12 - QUT Mineral Atlas
13 - Ruff.Info

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

Mikasaite

Fe+++2(SO4)3
Dana No: 28.04.05.02 Strunz No: 07.AB.05
Locality:

 

Notes: