Mikasaite Mineral Data (original) (raw)

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:

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:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
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H - Help Screen
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Help on Above

| | 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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Ask about Mikasaite here :
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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: