[Newest Minerals] [Rare Minerals] [Cabinet Specimens] [About Us] [Image Gallery] Dakota Matrix Minerals Updated weekly, for the collector, educator, and researcher since 1996 Extensive Inventory of very Rare Minerals. Visa and Mastercard are Welcome General Ekaterinite InformationCa2B4O7(Cl,OH)2•2(H2O) |
Molecular Weight = 333.11 gm |
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Calcium 24.06 % Ca 33.67 % CaO |
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Boron 12.98 % B 41.80 % B2O3 |
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Hydrogen 1.36 % H 12.17 % H2O |
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Chlorine 15.96 % Cl 15.96 % Cl |
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- %
Cl -3.60 % -O=Cl2 |
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Oxygen 45.63 % O |
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______ ______ |
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100.00 % 100.00 % = TOTAL OXIDE |
Ca2B4O7Cl1.5(OH)0.5•2(H2O) |
Calcite and calcite–anhydrite veins associated with a mineralized skarn. |
Approved IMA 1980 |
From drill cores in the Korshunovskoye iron–boron skarn deposit, Irkutsk district, Siberia, Russia. Link to MinDat.org Location Data. |
Named for Yekaterina Vladimirovna Rozhkova (1898-1979), Russian mineralogist, Research Institute of Mineral Resources, Moscow, Russia. |
Ekaterinite + Pronunciation |
| | Ekaterinite Image
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Ekaterinite Crystallographya:c = 1:2.01349 |
a = 11.86, c = 23.88, Z = 12; V = 2,908.94 Den(Calc)= 2.28 |
Hexagonal - PyramidalH-M Symbol (6) Space Group: C6 |
By Intensity(I/Io): 1.916(1), 2.31(1), 2.047(0.99), |
| Physical Properties of EkaterinitePearl white, Pink. |
2.44 |
1 - Talc |
Pearly |
white |
| Optical Properties of EkateriniteCI meas= 0.066 (Fair) - where the CI = (1-KPDmeas/KC) |
CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2524,KPDmeas= 0.2359,KC= 0.2524 Ncalc = 1.58 - 1.62 Uniaxial (-), e=1.574, w=1.577, bire=0.0030. |
| Calculated Properties of EkateriniteBulk Density (Electron Density)=2.27 gm/cc |
note: Specific Gravity of Ekaterinite =2.28 gm/cc. Fermion Index = 0.02 |
Boson Index = 0.98 PEEkaterinite = 4.15 barns/electron |
U=PEEkaterinite x rElectron Density= 9.44 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Ekaterinite is Not Radioactive | Ekaterinite Classification26.07.03.01 (26)Hydrated Borates Containing Hydroxyl or Halogen |
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(26.07)Dana Type |
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(26.07.03)Dana Group |
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06.HA.40 06 - BORATES |
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06.H - Unclassified Borates |
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06.HA -Unclassified borates |
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| Other Ekaterinite InformationNAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
Links to other databases for Ekaterinite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - EUROmin Project 4 - Ecole des Mines de Paris 5 - GeoScienceWorld 6 - Google Images 7 - Google Scholar 8 - Handbook of Mineralogy (MinSocAm) 9 - Handbook of Mineralogy (UofA) 10 - MinDAT 11 - Mineralienatlas (Deutsch) 12 - Online Mineral Museum 13 - QUT Mineral Atlas 14 - Ruff.Info Search for Ekaterinite using: Visit our Advertisers for Ekaterinite : B & L Fine MineralsDan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Excalibur Minerals Exceptional Minerals Fabre Minerals John Betts Fine Minerals Lapis Mineral Journal Mineral News UV Tools Wrights Rock Shop Translate Ekaterinite Mineral Data : Ask about Ekaterinite here : Print or Cut-and-Paste your Ekaterinite Specimen Label here :
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