Mineralogy Database

Lanthanite-(Nd) Mineral Data

Search Webmineral :

General Lanthanite-(Nd) Information

Help on Chemical  Formula: Chemical Formula: (Nd,La)2(CO3)3•8(H2O)
Help on Composition: Composition: Molecular Weight = 609.96 gm
   Lanthanum  11.39 %  La   13.35 % La2O3
   Hydrogen    2.64 %  H    23.63 % H2O
   Carbon      5.91 %  C    21.65 % CO2
   Neodymium  35.47 %  Nd   41.37 % Nd2O3
   Oxygen     44.59 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Nd1.5La0.5(CO3)3•8(H2O)
Help on Environment: Environment: Rare secondary mineral typically formed by alteration or weathering from earlier rare-earth-element-bearing minerals.
Help on IMA Status: IMA Status: Approved IMA 1980
Help on Locality: Locality: Curitiba, Paran�, Brazil. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for its relationship to lanthanite-(La) and the neodymium content.
Help on Name Pronunciation: Name Pronunciation: Lanthanite-(Nd) + Pronunciation Say LANTHANITE-(ND)
Help on Synonym: Synonym: Coutinhite

Lanthanite-(Nd) Image

Click Here for Larger   Image in a New Browser Window Images:
Click Here for Larger   Image


Comments: Beige aggregate of scaly, platy lanthanite-(Nd) crystals.
Location: Curitiba, Paranà, Brazil. Scale: 2.5 x 2 cm.
© Sandro Maggia/Minernet.it

Lanthanite-(Nd) Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5593:1:0.5278
Help on Cell Dimensions: Cell Dimensions: a = 9.476, b = 16.94, c = 8.942, Z = 4; V = 1,435.40 Den(Calc)= 2.82
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbnb
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.5(1), 3.252(0.63), 3.038(0.58),

Physical Properties of Lanthanite-(Nd)

Help on Cleavage: Cleavage: {010} Perfect, {101} Good
Help on Color: Color: Light pink.
Help on Density: Density: 2.81
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Sectile - Curved shavings or scrapings produced by a knife blade, (e.g. graphite).
Help on Habit: Habit: Encrustations - Forms crust-like aggregates on matrix.
Help on Habit: Habit: Platy - Sheet forms (e.g. micas).
Help on Hardness: Hardness: 2.5-3 - Finger Nail-Calcite
Help on Luster: Luster: Vitreous - Pearly
Help on Streak: Streak: white

Optical Properties of Lanthanite-(Nd)

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.017 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= -0.014 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2052,KPDmeas= 0.2059,KC= 0.2025
Ncalc = 1.57
Help on Optical Data: Optical Data: Biaxial (-), a=1.532, b=1.59, g=1.614, bire=0.0820, 2V(Calc)=62, 2V(Meas)=61.

Calculated Properties of Lanthanite-(Nd)

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.67 gm/cc
note: Specific Gravity of Lanthanite-(Nd) =2.82 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.07
Boson Index = 0.93
Help on Photoelectric: Photoelectric: PELanthanite-(Nd) = 248.46 barns/electron
U=PELanthanite-(Nd) x relectron= 662.80 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 47,280.23 (Gamma Ray American Petroleum Institute Units)
Concentration of Lanthanite-(Nd) per GRapi unit = 21.15 (PPM)

Lanthanite-(Nd) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.

Estimated Maximum U.S. Postal Shipping Size (10 mRem/hr limit, Unshielded 10 cm box) 643.33 ±160.83 grams of pure Lanthanite-(Nd) .

Estimated Radioactivity from Lanthanite-(Nd) - weak
Curies (Ci)
If Held in Hand
For One Hour
1000 gm / 8.78 cm 1,049,606 2.84E-05 47,280.23 15.54
100 gm / 4.08 cm 104,961 2.84E-06 4,728.02 1.55
10 gm / 1.89 cm 10,496 2.84E-07 472.80 0.16
1 gm / 8.78 mm 1,050 2.84E-08 47.28 0.02
0.1 gm / 4.08 mm 105 2.84E-09 4.73 0.00
0.01 gm / 1.89 mm 10 2.84E-10 0.47 0.00
0.001 gm / 0.88 mm 1 2.84E-11 0.05 0.00

Weight of pure Lanthanite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 2.82 gm/cc.*
Goverment Estimate of Average Annual Exposure ( 360 mRem) **
Note: 10 microsieverts/hr = 1 mRem/hr **
Max Permissable Adult Dose 50,000 mRem/yr (hands), 15,000 mRem/yr (eyes)
Lethal Dose LD(50) Exposure 400,000 to 500,000 mRem
Estimated Thorium Activity ( 2.34 % Th) From Sum REE Elements (46.86 % REE)

Lanthanite-(Nd) Classification

Help on  Dana Class: Dana Class: (15)Hydrated Carbonates
  (15.04)Dana Type
  (15.04.02)Lanthanite Series Lanthanite-(La) (La,Ce)2(CO3)3•8(H2O) Pbnb 2/m 2/m 2/m Lanthanite-(Nd) (Nd,La)2(CO3)3•8(H2O) Pbnb 2/m 2/m 2/m Lanthanite-(Ce) (Ce,La)2(CO3)3•8(H2O) Pbnb 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 05.CC.25 05 - CARBONATES (NITRATES)
  05.C - Carbonates without Additional Anions, with H2O
  05.CC -With rare-earth elements (REE)
05.CC.25 Calkinsite-(Ce) (Ce,La)2(CO3)3•4(H2O) P 21221 2 2 2
05.CC.25 Lanthanite-(Ce) (Ce,La)2(CO3)3•8(H2O) Pbnb 2/m 2/m 2/m
05.CC.25 Lanthanite-(La) (La,Ce)2(CO3)3•8(H2O) Pbnb 2/m 2/m 2/m
05.CC.25 Lanthanite-(Nd) (Nd,La)2(CO3)3•8(H2O) Pbnb 2/m 2/m 2/m

Other Lanthanite-(Nd) Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Lanthanite-(Nd) :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - GeoScienceWorld
5 - Google Images
6 - Google Scholar
7 - MinDAT
8 - Mineralienatlas (Deutsch)
9 - Online Mineral Museum
10 - QUT Mineral Atlas
11 - Ruff.Info

Search for Lanthanite-(Nd) using:

Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Lanthanite-(Nd) :

Ask about Lanthanite-(Nd) 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 Espaol

Print or Cut-and-Paste your Lanthanite-(Nd) Specimen Label here :


Dana No: Strunz No: 05.CC.25





Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.