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Nambulite Mineral Data + |
General Nambulite Information |
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| (Li,Na)Mn++4[Si5O14(OH)] | |||
| Molecular Weight = 612.13 gm | |||
| Sodium 0.94 % Na 1.27 % Na2O | |||
| Lithium 0.85 % Li 1.83 % Li2O | |||
| Manganese 35.90 % Mn 46.35 % MnO | |||
| Silicon 22.94 % Si 49.08 % SiO2 | |||
| Hydrogen 0.16 % H 1.47 % H2O | |||
| Oxygen 39.21 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Li0.75Na0.25Mn2+4Si5O14(OH) | |||
| Forms a series with natronambulite. | |||
| Approved IMA 1972 | |||
| Funakozawa mine, Kitakami Mountains, Iwate Prefecture, Japan. Link to MinDat.org Location Data. | |||
| Named for Matsuo Nambu (1917-), mineralogist, Tohoko University, Japan. | |||
| ICSD 1974 | |||
| PDF 27-1253 | |||
Nambulite Image | |||
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Nambulite Crystallography |
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| a:b:c =0.6479:1:0.5723 | |||
| a = 7.621, b = 11.761, c = 6.731, Z = 2; alpha = 92.77°, beta = 95.08°, gamma = 106.87° V = 574.40 Den(Calc)= 3.54 | |||
| Triclinic - PinacoidalH-M Symbol ( 1) Space Group: P1 | |||
| By Intensity(I/Io): 2.96(1), 2.97(0.8), 2.92(0.7), | |||
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Physical Properties of Nambulite |
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| [001] Perfect, [100] Distinct, [010] Distinct | |||
| Reddish orange brown. | |||
| 3.51 | |||
| Transparent to Translucent | |||
| 6.5 - Pyrite | |||
| Vitreous - Adamantine | |||
| light yellow | |||
Optical Properties of Nambulite |
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| CI meas= 0.012 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.021 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2022,KPDmeas= 0.2039,KC= 0.2064 |
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| Biaxial (+), a=1.707, b=1.71, g=1.73, bire=0.0230, 2V(Calc)=44, 2V(Meas)=30. Dispersion r > v weak. | |||
Calculated Properties of Nambulite |
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relectron=3.39 gm/cc |
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| Fermion Index = 0.01153 Boson Index = 0.98847 |
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PENambulite = 10.09 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Nambulite is Not Radioactive |
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Nambulite Classification |
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| 65.4.1.4 (65)Inosilicate Single-Width Unbranched Chains, W=1 | |||
| (65.4)with chains P=5 | |||
| (65.4.1)Rhodonite group | |||
| VIII/F.27-50 VIII - Silicates | |||
| VIII/F - Inosilicates (chain and band) Five chains [Si5O15]10- | |||
| VIII/F.27 - Rhodonite - Inesite series | |||
Other Nambulite Information |
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| NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | |||
| Links to other databases for Nambulite : 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 - WWW-MINCRYST 14 -École des Mines de Paris Search for Nambulite using: Visit our Advertisers for Nambulite : Translate Nambulite Mineral Data : Ask about Nambulite here : Print or Cut-and-Paste your Nambulite Specimen Label here :
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