Manganokukisvumite Mineral Data

Manganokukisvumite Mineral Data

General Manganokukisvumite Information

Chemical Formula:

Na6MnTi4Si8O28·4(H2O)

Composition:

Molecular Weight = 1,130.79 gm

Potassium 0.17 % K 0.21 % K₂O

Sodium 11.81 % Na 15.92 % Na₂O

Calcium 0.07 % Ca 0.10 % CaO

Cerium 0.12 % Ce 0.15 % Ce₂O₃

Magnesium 0.15 % Mg 0.25 % MgO

Titanium 16.43 % Ti 27.41 % TiO₂

Manganese 4.32 % Mn 5.58 % MnO

Niobium 0.49 % Nb 0.71 % Nb₂O₅

Aluminum 0.10 % Al 0.18 % Al₂O₃

Iron 0.44 % Fe 0.57 % FeO

Silicon 19.89 % Si 42.56 % SiO₂

Hydrogen 0.71 % H 6.37 % H₂O

Oxygen 45.28 % O

______ ______

100.00 % 100.01 % = TOTAL OXIDE

Empirical Formula:

Na_5.81K_0.05Ca_0.02Ce_0.01Mn²⁺_0.89Fe²⁺_0.09Mg_0.07Al_0.04Ti_3.88Nb_0.06Si_8.01O₂₈·4(H₂O)

Environment:

Small cavities in albite-rich syenite breccia. Mn-dominanat analogue of kukisvumite and closely related to lintisite.

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

Poudrette Quarry, Mont Saint-Hilaire, Rouville County, Quebec, Canada. Link to MinDat.org Location Data.

Name Origin:

Named as the manganese-dominant analogue of kukisvumite.

Synonym:

IMA2002-029

Manganokukisvumite Image

Images:

Manganokukisvumite

Comments: Scanning electron photomicrograph of manganokukisvumite. (CanMin, v 42 , p 782).
Location: Mont Saint-Hilaire, Quebec. Scale: See Image.
© Canadian Mineralogist

Manganokukisvumite Crystallography

Axial Ratios:

a:b:c =3.3732:1:0.6061

Cell Dimensions:

a = 29.05, b = 8.612, c = 5.22, Z = 2; V = 1,305.93 Den(Calc)= 2.88

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pccn

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

By Intensity(I/I_o): 14.47(1)(200), 3.025(0.4)(910), 2.881(0.2)(521),6.43(0.2)(310), 4.83(0.1)(600), 2.146(0.1)(930), 2.458(0.1)(402), 2.591(0.1)(721), 3.743(0.1)(701),

Physical Properties of Manganokukisvumite

Cleavage:

None

Color:

Colorless.

Density:

2.86

Diaphaniety:

Transparent

Fracture:

Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).

Habit:

Tabular - Form dimensions are thin in one direction.

Hardness:

5.5-6 - Knife Blade-Orthoclase

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Manganokukisvumite

Gladstone-Dale:

CI meas= 0.031 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.038 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2538,KPDmeas= 0.2556,KC= 0.2638

Optical Data:

Biaxial (-), a=1.657, b=1.741-1.747, g=1.789-1.795, bire=0.1320-0.1380, 2V(Calc)=68-70, 2V(Meas)=70. Dispersion dispersion not observed.

Calculated Properties of Manganokukisvumite

Electron Density:

r_electron=2.81 gm/cc
note: r_{Manganokukisvumite}=2.86 gm/cc.

Fermion Index

Fermion Index = 0.03099
Boson Index = 0.96901

Photoelectric:

PE_{Manganokukisvumite}= 6.18 barns/electron
U=PE_{Manganokukisvumite} x r_electron= 17.38 barns/cc.

Radioactivity:

GRapi = 132.37 (Gamma Ray American Petroleum Institute Units)

Estimated Radioactivity from Manganokukisvumite - barely detectable

Manganokukisvumite Classification

Dana Class:

65.1.6.4 (65)Inosilicate Single-Width Unbranched Chains, W=1

(65.1)with chains P=2

(65.1.6)Lorenzenite group

65.1.6.1 Lorenzenite Na2Ti2Si2O9 P bcn 2/m 2/m 2/m

65.1.6.2 Kukisvumite Na6ZnTi4Si8O28·4(H2O) Pccn 2/m 2/m 2/m

65.1.6.3 Lintisite Na3LiTi2Si4O14·2(H2O) C 2/c 2/m

65.1.6.4 Manganokukisvumite ! Na6MnTi4Si8O28·4(H2O) Pccn 2/m 2/m 2/m

Strunz Class:

VIII/C.03-58 VIII - Silicates

VIII/C - Sorosilicates, with [Si2O7]6-, without anions unfamiliar to tetraheders

VIII/C.03 - Rankinite - Cebollite series

VIII/C.03-10 Rankinite Ca3Si2O7 P 2₁/a 2/m

VIII/C.03-20 Kilchoanite Ca3Si2O7 I2cm mm2

VIII/C.03-30 Cebollite Ca5Al2(SiO4)3(OH)4 Unk Ortho

VIII/C.03-58 Manganokukisvumite Na6MnTi4Si8O28·4(H2O) Pccn 2/m 2/m 2/m

Other Manganokukisvumite Information

References:

NAME( CanMin, v 42, p 781) PHYS. PROP.(CanMin, v 42, p 781) OPTIC PROP.(CanMin, v 42, p 781)

See Also:

Links to other databases for Manganokukisvumite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas

Search for Manganokukisvumite using:

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

Visit our Advertisers for Manganokukisvumite :
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 Manganokukisvumite Mineral Data :

Ask about Manganokukisvumite 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 Manganokukisvumite Specimen Label here :

Manganokukisvumite

Na6MnTi4Si8O28·4(H2O)
Dana No: 65.1.6.4 Strunz No: VIII/C.03-58
Locality:

Notes: