Scheuchzerite Mineral Data

General Scheuchzerite Information

Chemical Formula:

Na(Mn,Mg)9[VSi9O28(OH)](OH)3

Composition:

Molecular Weight = 1,309.36 gm

Sodium 1.70 % Na 2.30 % Na₂O

Calcium 0.09 % Ca 0.13 % CaO

Magnesium 1.76 % Mg 2.92 % MgO

Manganese 32.69 % Mn 42.20 % MnO

Aluminum 0.02 % Al 0.04 % Al₂O₃

Vanadium 3.70 % V 6.60 % V₂O₅

Zinc 0.80 % Zn 0.99 % ZnO

Silicon 19.48 % Si 41.67 % SiO₂

Nickel 0.18 % Ni 0.23 % NiO

Arsenic 0.11 % As 0.18 % As₂O₅

Hydrogen 0.31 % H 2.75 % H₂O

Oxygen 39.16 % O

______ ______

100.00 % 100.01 % = TOTAL OXIDE

Empirical Formula:

Na_0.97Mn²⁺_7.79Mg_0.95Zn_0.16Ni_0.04Ca_0.03Al_0.01V⁵⁺_0.95As_0.02Si_9.08O_32.05H₄

IMA Status:

Approved IMA 2004 (Dana # Added)

Locality:

Link to MinDat.org Location Data.

Name Origin:

Named for Swiss naturalist Johann Jakob Scheuchzer (1672-1733), junior physician of the city of Z�rich, curator of the Kunstkammer�a (cabinet of natural history and curiosities), an d he held the chair of physics and mat

Synonym:

IMA2004-044

Scheuchzerite Image

Images:

Scheuchzerite Saneroite

Comments: BSE image of acicular scheuchzerite crystals (Sz) partially intergrown with platy saneroite (Snr) in a vug lined with minute quartz (Qtz) crystals. (AmMin v91:937).
Location: Metamorphosed synsedimentary exhalative Mn deposit of Fianel, Val Ferrera, Central Alps, Switzerland. Scale: See Image.
© American Mineralogist

Scheuchzerite Crystallography

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

By Intensity(I/I_o): 2.71(1), 3.09(0.8), 7.91(0.7),8.68(0.5), 2.92(0.4), 3.22(0.4), 3.94(0.3), 4.83(0.3),

Physical Properties of Scheuchzerite

Color:

Yellow orange.

Optical Properties of Scheuchzerite

Gladstone-Dale:

CI meas= 0.011 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0.002 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.214,KPDmeas= 0.2121,KC= 0.2144
Ncalc = 1.74 - 1.75

Calculated Properties of Scheuchzerite

Electron Density:

Bulk Density (Electron Density)=3.36 gm/cc
note: Specific Gravity of Scheuchzerite =3.47 gm/cc.

Fermion Index:

Fermion Index = 0.01
Boson Index = 0.99

Photoelectric:

PE_{Scheuchzerite}= 10.44 barns/electron
U=PE_{Scheuchzerite} x rElectron Density= 35.04 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Scheuchzerite is Not Radioactive

Scheuchzerite Classification

Dana Class:

69.02.02.02 (69)Inosilicate Chains with Side Branches or Loops

(69.02)with P>2

(69.02.02)Dana Group

69.02.02.01 Saneroite Na2(Mn,Fe)10Si11VO34(OH)4 P1 1

69.02.02.02 Scheuchzerite! Na(Mn,Mg)9[VSi9O28(OH)](OH)3 P1 1

Strunz Class:

09.DM.35 09 - SILICATES (Germanates)

09.D - Inosilicates* Structural terminology according to Liebau (1985)

09.DM -Inosilicates with 6-periodic single chains

09.DM.35 Scheuchzerite! Na(Mn,Mg)9[VSi9O28(OH)](OH)3 P1 1

Other Scheuchzerite Information

See Also:

Links to other databases for Scheuchzerite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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

Scheuchzerite

Na(Mn,Mg)9[VSi9O28(OH)](OH)3
Dana No: 69.02.02.02 Strunz No: 09.DM.35
Locality:

Notes: