Lithiomarsturite Mineral Data

Lithiomarsturite Mineral Data +

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General Lithiomarsturite Information

Chemical Formula:

LiCa2Mn2HSi5O15

Composition:

Molecular Weight = 578.40 gm

Lithium 1.20 % Li 2.58 % Li₂O

Calcium 13.86 % Ca 19.39 % CaO

Manganese 19.00 % Mn 24.53 % MnO

Silicon 24.28 % Si 51.94 % SiO₂

Hydrogen 0.17 % H 1.56 % H₂O

Oxygen 41.49 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

LiCa₂Mn²⁺₂HSi₅O₁₅

IMA Status:

Approved IMA 1990

Locality:

Foote Quarry, Kings Mountain, Cleveland County, North Carolina, USA. Link to MinDat.org Location Data.

Synonym:

IMA1988-035

Lithiomarsturite Image

Images:

Click Here for Larger Lithiomarsturite Image

Lithiomarsturite Lithiophosphate

Comments: Tan-brown lithiomarsturite with cream-colored lithiophosphate in matrix.
Location: Foote Mine, Kings Mtn, North Carolina, USA. Scale: 2" x 3".
© Chris Wright / Wrights Rock Shop

Lithiomarsturite Crystallography

Axial Ratios:

a:b:c =0.6314:1:0.5615

Cell Dimensions:

a = 7.652, b = 12.119, c = 6.805, Z = 2; alpha = 85.41°, beta = 94.42°, gamma = 111.51° V = 583.48 Den(Calc)= 3.29

Crystal System:

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

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

By Intensity(I/I_o): 3.01(1), 2.913(0.9), 3.19(0.9),

Physical Properties of Lithiomarsturite

Cleavage:

[???] Good

Color:

Yellow brown, Light yellow, Pink brown.

Density:

3.32

Diaphaniety:

Transparent

Hardness:

6 - Orthoclase

Luster:

Vitreous (Glassy)

Streak:

light brown

Optical Properties of Lithiomarsturite

Gladstone-Dale:

CI meas= 0.059 (Fair) - where the CI = (1-KPDmeas/KC)
CI calc= 0.05 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1997,KPDmeas= 0.1979,KC= 0.2103

Optical Data:

Biaxial (-), a=1.645, b=1.66, g=1.666, bire=0.0210, 2V(Calc)=64, 2V(Meas)=59.9-64.

Calculated Properties of Lithiomarsturite

Electron Density:

r_electron=3.23 gm/cc
note: r_{Lithiomarsturite}=3.29 gm/cc.

Fermion Index

Fermion Index = 0.01262
Boson Index = 0.98738

Photoelectric:

PE_{Lithiomarsturite}= 7.46 barns/electron
U=PE_{Lithiomarsturite} x r_electron= 24.09 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Lithiomarsturite is Not Radioactive

Lithiomarsturite Classification

Dana Class:

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

(65.4)with chains P=5

(65.4.1)Rhodonite group

65.4.1.1 Rhodonite (Mn,Fe,Mg,Ca)SiO3 P1 1

65.4.1.2 Babingtonite Ca2(Fe,Mn)FeSi5O14(OH) P1 1

65.4.1.3 Manganbabingtonite Ca2(Mn,Fe)FeSi5O14(OH) P1 1

65.4.1.4 Nambulite (Li,Na)Mn4[Si5O14(OH)] P1 1

65.4.1.5 Natronambulite (Na,Li)Mn4[Si5O14(OH)] P1 1

65.4.1.6 Marsturite NaCaMn3[Si5O14(OH)] P1,P 1 Tri

65.4.1.7 Lithiomarsturite LiCa2Mn2HSi5O15 P1 1

65.4.1.8 Scandiobabingtonite! Ca2(Fe,Mn)ScSi5O14(OH) P1 1

Strunz Class:

VIII/F.27-70 VIII - Silicates

VIII/F - Inosilicates (chain and band) Five chains [Si5O15]10-

VIII/F.27 - Rhodonite - Inesite series

VIII/F.27-10 Rhodonite (Mn,Fe,Mg,Ca)SiO3 P1 1

VIII/F.27-20 Babingtonite Ca2(Fe,Mn)FeSi5O14(OH) P1 1

VIII/F.27-30 Manganbabingtonite Ca2(Mn,Fe)FeSi5O14(OH) P1 1

VIII/F.27-35 Scandiobabingtonite! Ca2(Fe,Mn)ScSi5O14(OH) P1 1

VIII/F.27-40 Santaclaraite CaMn4Si5O14(OH)2·(H2O) P1 1

VIII/F.27-50 Nambulite (Li,Na)Mn4[Si5O14(OH)] P1 1

VIII/F.27-60 Natronambulite (Na,Li)Mn4[Si5O14(OH)] P1 1

VIII/F.27-70 Lithiomarsturite LiCa2Mn2HSi5O15 P1 1

VIII/F.27-80 Marsturite NaCaMn3[Si5O14(OH)] P1,P 1 Tri

VIII/F.27-90 Inesite Ca2Mn7Si10O28(OH)2·5(H2O) P1 1

Other Lithiomarsturite Information

References:

PHYS. PROP.(Am.Min.,Vol.75,p409-414,1990) OPTIC PROP.(Am.Min.,Vol.75,p409-414,1990)

See Also:

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

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Lithiomarsturite

LiCa2Mn2HSi5O15
Dana No: 65.4.1.7 Strunz No: VIII/F.27-70
Locality:

Notes: