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Neltnerite Mineral Data + |
General Neltnerite Information |
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| CaMn+++6SiO12 | |||
| Molecular Weight = 589.78 gm | |||
| Calcium 6.80 % Ca 9.51 % CaO | |||
| Manganese 55.89 % Mn 80.30 % Mn2O3 | |||
| Silicon 4.76 % Si 10.19 % SiO2 | |||
| Oxygen 32.55 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| CaMn3+6SiO12 | |||
| Approved IMA 1982 | |||
| Link to MinDat.org Location Data. | |||
| ICSD 28423 | |||
| PDF 35-66 | |||
Neltnerite Image | |||
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Neltnerite Crystallography |
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| a:c = 1:1.99218 | |||
| a = 9.464, c = 18.854, Z = 8; V = 1,688.70 Den(Calc)= 4.64 | |||
| Tetragonal - Ditetragonal DipyramidalH-M Symbol (4/m 2/m 2/m) Space Group: I 41/acd | |||
| By Intensity(I/Io): 2.728(1), 1.672(0.85), 1.427(0.6), | |||
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Physical Properties of Neltnerite |
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| [???] Indistinct | |||
| Black. | |||
| 4.63 | |||
| Opaque | |||
| Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces. | |||
| 6 - Orthoclase | |||
| Sub Metallic | |||
| black | |||
Optical Properties of Neltnerite |
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| NCalc= 2.31 - from Gladstone-Dale relationship (KC = 0.2829) where Ncalc=Dcalc*KC+1 NCalc= 2.31 - from Gladstone-Dale relationship (KC = 0.2829) where Ncalc=Dmeas*KC+1 |
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Calculated Properties of Neltnerite |
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relectron=4.41 gm/cc |
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| Fermion Index = 0.00247 Boson Index = 0.99753 |
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PENeltnerite = 15.62 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Neltnerite is Not Radioactive |
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Neltnerite Classification |
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| 7.5.1.2 (7)Multiple Oxides | |||
| (7.5)where A B X2 | |||
| (7.5.1)Humite group (Tetragonal: I41/acd) containing Si | |||
| VIII/B.09-07 VIII - Silicates | |||
| VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cations of octahedral and tetrahedral orientation [4/6] | |||
| VIII/B.09 - Braunite - Langbanite - Katoptrite series | |||
Other Neltnerite Information |
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| PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) | |||
| Links to other databases for Neltnerite : 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 Neltnerite using: Visit our Advertisers for Neltnerite : AA Mineral SpecimensB & L Fine Minerals Crystal Vaults Dan Weinrich Fine Minerals Dan Weinrich Auctions e-Rocks Auctions Excalibur Minerals Exceptional Minerals Fabre Minerals Greenside Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club MineralsWeb Fine Minerals Rockshop.cz T G Fine Minerals Wrights Rock Shop Translate Neltnerite Mineral Data : Ask about Neltnerite here : Print or Cut-and-Paste your Neltnerite Specimen Label here :
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