General Gysinite-(Nd) Information Chemical Formula: |
Pb(Nd,La)(CO3)2(OH)•(H2O) |
Composition: |
Molecular Weight = 505.15 gm |
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Lanthanum 6.87 % La 8.06 % La2O3 |
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Hydrogen 0.60 % H 5.35 % H2O |
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Lead 41.02 % Pb 44.19 % PbO |
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Carbon 4.76 % C 17.42 % CO2 |
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Neodymium 21.42 % Nd 24.98 % Nd2O3 |
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Oxygen 25.34 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
Empirical Formula: |
PbNd0.75La0.25(CO3)2(OH)•(H2O) |
Environment: |
Secondary mineral in the oxidized portions of rare-earth-bearing lead deposits. |
IMA Status: |
Approved IMA 1985 |
Locality: |
Originally found on a museum specimen labelled as coming from Shinkolobwe; however the associated minerals indicate the specimen is more likely from the Kasompi mine, both in Katanga P
Link to MinDat.org Location Data. |
Name Origin: |
Named for Marcel Gysin (1891-1974), Professor of Mineralogy, University of Geneva, Geneva, Switzerland. |
Name Pronunciation: |
Gysinite-(Nd) |
Synonym: |
ICSD 30968 |
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PDF 45-1402 |
| | Search for Gysinite-(Nd) Images
Images:
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| | Gysinite-(Nd) Crystallography Axial Ratios: |
a:b:c =0.5929:1:0.8529 |
Cell Dimensions: |
a = 5.04, b = 8.5, c = 7.25, Z = 2; V = 310.59 Den(Calc)= 5.40 |
Crystal System: |
Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pmcn |
X Ray Diffraction: |
By Intensity(I/Io): 3.676(1), 4.326(1), 2.074(0.6), |
Crystal Structure:
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Mouse
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| Physical Properties of Gysinite-(Nd) Cleavage: |
None |
Color: |
Light pink, Red pink. |
Density: |
4.82 |
Diaphaneity: |
Transparent |
Fracture: |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
Hardness: |
4-4.5 - Between Fluorite and Apatite |
Luster: |
Vitreous - Greasy |
Streak: |
light pink |
| Optical Properties of Gysinite-(Nd) Gladstone-Dale: |
CI meas= -0.034 (Excellent) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.077 (Fair) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1475,KPDmeas= 0.1653,KC= 0.1599 Ncalc = 1.77 - 1.86 Optical Data: |
Biaxial (-), a=1.745, b=1.805, g=1.84, bire=0.0950, 2V(Calc)=72, 2V(Meas)=70. |
| Calculated Properties of Gysinite-(Nd) Electron Density: |
Bulk Density (Electron Density)=4.20 gm/cc |
note: Specific Gravity of Gysinite-(Nd) =4.82 gm/cc. Fermion Index: |
Fermion Index = 0.13 |
Boson Index = 0.87 Photoelectric: |
PEGysinite-(Nd) = 884.77 barns/electron |
U=PEGysinite-(Nd) x relectron=3,718.83 barns/cc. Radioactivity: |
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GRapi = 26,314.20 (Gamma Ray American Petroleum Institute Units)
Gysinite-(Nd) is Radioactive as defined in 49 CFR 173.403. Greater than 70 Bq / gram.
Weight of pure Gysinite-(Nd) in grams (gm) and Calculated Diameter of a Sphere with a Density of 4.82 gm/cc.* | Gysinite-(Nd) Classification Dana Class: |
16b.01.01.04 (16b)Carbonates - Hydroxyl or Halogen |
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(16b.01)where (A)m (B)n (XO3)p Zq, with (m+n):p=1:1 |
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(16b.01.01)Ancylite group |
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Strunz Class: |
05.DC.05 05 - CARBONATES (NITRATES) |
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05.D - Carbonates with Additional Anions, with H2O |
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05.DC -With large cations |
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| Other Gysinite-(Nd) Information References: |
NAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
See Also: |
Links to other databases for Gysinite-(Nd) : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - GeoScienceWorld 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (UofA) 8 - MinDAT 9 - Mineralienatlas (Deutsch) 10 - Online Mineral Museum 11 - QUT Mineral Atlas 12 - Ruff.Info 13 - WWW-MINCRYST Search for Gysinite-(Nd) using: Visit our Advertisers for Gysinite-(Nd) : A Bijoux Google Search for Gysinite-(Nd)Adam's Minerals Google Search for Gysinite-(Nd) Cape Minerals Google Search for Gysinite-(Nd) Dakota Matrix Minerals Google Search for Gysinite-(Nd) Excalibur Mineral Corp. Google Search for Gysinite-(Nd) Exceptional Minerals Google Search for Gysinite-(Nd) John Betts Fine Minerals Search for Gysinite-(Nd) McDougall Minerals Google Search for Gysinite-(Nd) Mineral News Website Link Rock and Mineral Shows Google Search for Gysinite-(Nd) Weinrich Minerals, Inc. Google Search for Gysinite-(Nd) Ask about Gysinite-(Nd) here : Print or Cut-and-Paste your Gysinite-(Nd) Specimen Label here :
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