Manganotychite Mineral Data

Manganotychite Mineral Data

General Manganotychite Information

Chemical Formula:

Na6(Mn++,Fe++,Mg)2(SO4)(CO3)4

Composition:

Molecular Weight = 578.33 gm

Sodium 23.85 % Na 32.15 % Na₂O

Magnesium 0.84 % Mg 1.39 % MgO

Manganese 11.40 % Mn 14.72 % MnO

Iron 5.79 % Fe 7.45 % FeO

Carbon 8.31 % C 30.44 % CO₂

Sulfur 5.54 % S 13.84 % SO₃

Oxygen 44.26 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Na₆Mn²⁺_1.2Fe²⁺_0.6Mg_0.2(SO₄)(CO₃)₄

IMA Status:

Approved IMA 1990

Locality:

Link to MinDat.org Location Data.

Synonym:

IMA1989-039

Manganotychite Image

Images:

Click Here for Larger Manganotychite Image

Manganotychite Aegirine

Comments: Pale rose-tan granular manganotychite with black aegirine prism.
Location: Lovozero Massif, Kola Peninsula, Murmansk District, Russia. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Manganotychite Crystallography

Cell Dimensions:

a = 13.9951, Z = 8; V = 2,741.12 Den(Calc)= 2.80

Crystal System:

Isometric - DiploidalH-M Symbol (2/m 3) Space Group: F d3

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

By Intensity(I/I_o): 2.695(1), 4.22(0.76), 2.474(0.7),

Physical Properties of Manganotychite

Cleavage:

None

Color:

Brown, White, Pink.

Density:

2.7

Diaphaniety:

Transparent

Hardness:

4 - Fluorite

Luster:

Vitreous - Dull

Streak:

white

Optical Properties of Manganotychite

Gladstone-Dale:

CI meas= -0.03 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.007 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1943,KPDmeas= 0.2015,KC= 0.1956

Optical Data:

Isotropic, n=1.544.

Calculated Properties of Manganotychite

Electron Density:

r_electron=2.73 gm/cc
note: r_{Manganotychite}=2.80 gm/cc.

Fermion Index

Fermion Index = 0.00361
Boson Index = 0.99639

Photoelectric:

PE_{Manganotychite}= 5.45 barns/electron
U=PE_{Manganotychite} x r_electron= 14.88 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Manganotychite is Not Radioactive

Manganotychite Classification

Dana Class:

17.1.1.3 (17)Compound Carbonates

(17.1)with miscellaneous formulae

(17.1.1)Dana Group

17.1.1.1 Tychite Na6Mg2(CO3)4(SO4) F d3 2/m 3

17.1.1.2 Ferrotychite Na6Fe2(SO4)(CO3)4 F d3 2/m 3

17.1.1.3 Manganotychite Na6(Mn,Fe,Mg)2(SO4)(CO3)4 F d3 2/m 3

Strunz Class:

V/C.03-25 V - Nitrates, Carbonates and Borates

V/C - Waterfree carbonates with unfamiliar anions

V/C.03 - Northupite - Ferrotychite series

V/C.03-10 Northupite Na3Mg(CO3)2Cl F d3 2/m 3

V/C.03-20 Tychite Na6Mg2(CO3)4(SO4) F d3 2/m 3

V/C.03-25 Manganotychite Na6(Mn,Fe,Mg)2(SO4)(CO3)4 F d3 2/m 3

V/C.03-30 Ferrotychite Na6Fe2(SO4)(CO3)4 F d3 2/m 3

Other Manganotychite Information

References:

PHYS. PROP.(Am.Min.,Vol.77,p448,1992) OPTIC PROP.(Am.Min.,Vol.77,p448,1992)

See Also:

Links to other databases for Manganotychite :
1 - Alkali-Nuts(English) 2 - Alkali-Nuts(Francais) 3 -Am. Min. Crystal Structure Database 4 -Athena 5 - EUROmin Project 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (UofA) 9 -MinDAT 10 -MinMax(Deutsch) 11 -MinMax(English) 12 -Mineralienatlas (Deutsch) 13 -QUT Mineral Atlas 14 - WWW-MINCRYST 15 -École des Mines de Paris

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

Manganotychite

Na6(Mn++,Fe++,Mg)2(SO4)(CO3)4
Dana No: 17.1.1.3 Strunz No: V/C.03-25
Locality:

Notes: