[Mineral Auctions] [Register] [Current Auctions] [Log In] [www.danweinrich.com] Dan Weinrich Auctions Specializing In Live Weekly Auctions Of Top Quality Mineral Specimens The Place To Find Great Specimens At Great Prices! General Rokuhnite InformationFe++Cl2•(H2O) |
Molecular Weight = 144.77 gm |
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Iron 38.58 % Fe 49.63 % FeO |
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Hydrogen 1.39 % H 12.44 % H2O |
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Chlorine 48.98 % Cl 48.98 % Cl |
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- % Cl -11.05 % -O=Cl2
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Oxygen 11.05 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Fe2+Cl2•(H2O) |
Secondary mineral in fissures in earlier potassium-rich salt beds. |
Approved IMA 1980 |
Salzdetfurth potash mine, Hamelyn, Lower Saxony, Germany. Link to MinDat.org Location Data. |
Named for Robert KĻuhn (1911- ), German mineralogist, Kaliforschungs-Institut der Kali und Salz AG, Hannover, Germany. |
Rokuhnite + Pronunciation |
Rokuehnite |
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Rokuhnite Crystallographya:b:c =0.8744:1:0.4301 |
a = 7.396, b = 8.458, c = 3.638, Z = 2; beta = 97.68° V = 225.54 Den(Calc)= 2.13 |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m |
By Intensity(I/Io): 5.53(1), 2.762(0.7), 4.228(0.6), |
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Mouse
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| Physical Properties of RokuhniteColorless. |
2.35 |
Transparent |
| Optical Properties of RokuhniteBiaxial (+), a=1.605, b=1.633, g=1.702, bire=0.0970, 2V(Calc)=68, 2V(Meas)=64. |
| Calculated Properties of RokuhniteBulk Density (Electron Density)=2.06 gm/cc |
note: Specific Gravity of Rokuhnite =2.13 gm/cc. Fermion Index = 0.0082334572 |
Boson Index = 0.9917665428 PERokuhnite = 14.84 barns/electron |
U=PERokuhnite x rElectron Density= 30.58 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Rokuhnite is Not Radioactive | Rokuhnite Classification09.02.04.01 (09)Anhydrous and Hydrated Halides |
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(09.02)where A (X)2 |
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(09.02.04)Dana Group |
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03.BB.10 03 - HALIDES |
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03.B - Simple Halides, with H2O |
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03.BB -M:X = 1:2 |
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| Other Rokuhnite InformationNAME( AntBidBlaNic3) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
Links to other databases for Rokuhnite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - Google Images 6 - Google Scholar 7 - Handbook of Mineralogy (MinSocAm) 8 - Handbook of Mineralogy (UofA) 9 - MinDAT 10 - MinMax(Deutsch) 11 - MinMax(English) 12 - Mineralienatlas (Deutsch) 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Rokuhnite using: Visit our Advertisers for Rokuhnite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Diamond Dan Publications e-Rocks Auctions Excalibur Minerals Exceptional Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Rokuhnite Mineral Data : Ask about Rokuhnite here : Print or Cut-and-Paste your Rokuhnite Specimen Label here :
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