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Lindbergite Mineral Data

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General Lindbergite Information

Help on Chemical  Formula: Chemical Formula: Mn(C2O4)•2(H2O)
Help on Composition: Composition: Molecular Weight = 185.59 gm
   Sodium      0.12 %  Na    0.17 % Na2O
   Manganese  32.86 %  Mn   42.43 % MnO
   Aluminum    0.15 %  Al    0.27 % Al2O3
   Hydrogen    2.34 %  H    20.87 % H2O
   Carbon     12.56 %  C    37.64 % C2O3
   Oxygen     51.98 %  O
             ______        ______ 
             100.00 %      101.38 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Mn2+1.11Na0.01Al0.01(C2O4)0.97•2.15(H2O)
Help on Environment: Environment: Secondary mineral in a granitic pegmatite. Thought to be pseudomorphous after the tri-hydrate. Mn analogue of humboldtine (oxalate)
Help on IMA Status: IMA Status: Approved IMA 2004 (Dana # Added)
Help on Locality: Locality: Boca Rica mine, Galileit, Minas Gerais, Brazil Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Marie Louise Lindburg-Smith (1918-), USGS scientist who described several new species from the mine.
Help on Synonym: Synonym: IMA2003-029

Lindbergite Image

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  Lindbergite   Rockbridgeite

Comments: Rare organic mineral - lindbergite (Mn dihydrate oxalate) in white patches on rockbridgeite matrix.
Location: Boca Rica mine, Sapucaia do Norte, Gilileia, Minas Gerais, Brazil. Scale: Spot size 1 mm.
© Tom Loomis / Dakota Matrix

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Comments: Secondary electron image of interlocked irregularly contoured platelets of lindbergite. (AmMin v 89, p 1088).
Location: Boca Rica mine, Sapucaia do Norte, Gilileia, Minas Gerais, Brazil. Scale: See Image.
© American Mineralogist

Lindbergite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.1226:1:1.7697
Help on Cell Dimensions: Cell Dimensions: a = 11.955, b = 5.632, c = 9.967, Z = 4; beta = 128.34° V = 526.36 Den(Calc)= 2.34
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: C 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 4.813(1)(202), 4.704(0.84)(200), 2.998(0.58)(402),4.861(0.26)(111), 3.909(0.23)(002), 3.626(0.22)(111),

Physical Properties of Lindbergite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: White, Grayish white.
Help on Density: Density: 2.1
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Friable - The crumbly disintegration of earthy materials or highly fractured minerals.
Help on Habit: Habit: Prismatic - Crystals Shaped like Slender Prisms (e.g. tourmaline).
Help on Habit: Habit: Pseudomorphous - Occurs in the form of another mineral.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Lindbergite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.659 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.488 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2313,KPDmeas= 0.2578,KC= 0.1554
Ncalc = 1.33 - 1.36
Help on Optical Data: Optical Data: Biaxial (-), a=1.424, b=1.55, g=1.65, bire=0.2260, 2V(Calc)=76, 2V(Meas)=80. Dispersion r > v very weak.

Calculated Properties of Lindbergite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.32 gm/cc
note: Specific Gravity of Lindbergite =2.34 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0016340801
Boson Index = 0.9983659199
Help on Photoelectric: Photoelectric: PELindbergite = 8.37 barns/electron
U=PELindbergite x rElectron Density= 19.46 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Lindbergite is Not Radioactive

Lindbergite Classification

Help on  Dana Class: Dana Class: (50)Salts of Organic Acids
  (50.01.03)Humboldtine Group Humboldtine Fe(C2O4)•2(H2O) I2/a 2/m Glushinskite Mg(C2O4)•2(H2O) C 2/c 2/m Lindbergite! Mn(C2O4)•2(H2O) C 2/c 2/m
Help on  Strunz Class: Strunz Class: 10.AB.05 10 - ORGANIC COMPOUNDS
  10.A - Salts of Organic Acids
  10.AB -Oxalates
10.AB.05 Humboldtine Fe(C2O4)•2(H2O) I2/a 2/m
10.AB.05 Lindbergite! Mn(C2O4)•2(H2O) C 2/c 2/m

Other Lindbergite Information

Help on References: References: NAME( AmMin, v 89, p 1087) PHYS. PROP.(AmMin, v 89, p 1087) OPTIC PROP.(AmMin, v 89, p 1087)
Help on See Also: See Also: Links to other databases for Lindbergite :
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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Dana No: Strunz No: 10.AB.05





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