Jokokuite Mineral Data

Jokokuite Mineral Data +

General Jokokuite Information

Chemical Formula:

MnSO4·5(H2O)

Composition:

Molecular Weight = 241.08 gm

Manganese 22.79 % Mn 29.43 % MnO

Hydrogen 4.18 % H 37.36 % H₂O

Sulfur 13.30 % S 33.21 % SO₃

Oxygen 59.73 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Mn²⁺(SO₄)·5(H₂O)

IMA Status:

Approved IMA 1978

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 41202

PDF 31-836

Jokokuite Image

Images:

Jokokuite

Comments: Pale pink stalactic mass of jokokuite.
Location: Jokoku Mine, Haminokuni, Hokkaido, Japan. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Jokokuite Crystallography

Axial Ratios:

a:b:c =0.5914:1:0.5691

Cell Dimensions:

a = 6.37, b = 10.77, c = 6.13, Z = 2; alpha = 98.767°, beta = 109.967°, gamma = 77.833° V = 381.88 Den(Calc)= 2.10

Crystal System:

Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1

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

By Intensity(I/I_o): 5.84(1), 2.72(0.72), 4.98(0.61),

Physical Properties of Jokokuite

Cleavage:

None

Color:

Light pink.

Density:

2.03

Diaphaniety:

Transparent to Translucent

Hardness:

2.5 - Finger Nail

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Jokokuite

Gladstone-Dale:

CI meas= -0.027 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2421,KPDmeas= 0.2504,KC= 0.2438

Optical Data:

Biaxial (-), a=1.498, b=1.51, g=1.517, bire=0.0190, 2V(Calc)=74, 2V(Meas)=70-80.

Calculated Properties of Jokokuite

Electron Density:

r_electron=2.14 gm/cc
note: r_Jokokuite=2.10 gm/cc.

Fermion Index

Fermion Index = 0.00129
Boson Index = 0.99871

Photoelectric:

PE_Jokokuite= 6.44 barns/electron
U=PE_Jokokuite x r_electron= 13.80 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Jokokuite is Not Radioactive

Jokokuite Classification

Dana Class:

29.6.7.4 (29)Hydrated Acid and Sulfates

(29.6)where A XO4 · x(H2O)

(29.6.7)Chalchanthite Group (Triclinic: P1¯)

29.6.7.1 Chalcanthite CuSO4·5(H2O) P1 1

29.6.7.2 Siderotil FeSO4·5(H2O) P1 1

29.6.7.3 Pentahydrite MgSO4·5(H2O) P1 1

29.6.7.4 Jokokuite MnSO4·5(H2O) P1 1

Strunz Class:

VI/C.04-30 VI - Sulfates,Chromates,Molybdates and Tungstates

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

VI/C.04 - Chalcanthite group

VI/C.04-10 Pentahydrite MgSO4·5(H2O) P1 1

VI/C.04-20 Siderotil FeSO4·5(H2O) P1 1

VI/C.04-30 Jokokuite MnSO4·5(H2O) P1 1

VI/C.04-40 Chalcanthite CuSO4·5(H2O) P1 1

Other Jokokuite 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 Jokokuite :
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 Jokokuite using:

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

Visit our Advertisers for Jokokuite :
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 Jokokuite Mineral Data :

Ask about Jokokuite 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 Jokokuite Specimen Label here :

Jokokuite

MnSO4·5(H2O)
Dana No: 29.6.7.4 Strunz No: VI/C.04-30
Locality:

Notes: