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Henmilite Mineral Data |
General Henmilite Information |
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Ca2Cu[B(OH)4]2(OH)4 | ||
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Molecular Weight = 369.41 gm | ||
Calcium 21.70 % Ca 30.36 % CaO | |||
Copper 17.20 % Cu 21.53 % CuO | |||
Boron 5.85 % B 18.85 % B2O3 | |||
Hydrogen 3.27 % H 29.26 % H2O | |||
Oxygen 51.97 % O | |||
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100.00 % 100.00 % = TOTAL OXIDE | |||
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Ca2CuB2(OH)12 | ||
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In borate veins cutting contact-metasomatized marble. | ||
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Approved IMA 1986 | ||
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Fuka mine, Okayama, Prefecture, Japan. Link to MinDat.org Location Data. | ||
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Named for Kitinosuke Henmi (1919-1997) and his daughter Chiyoko Henmi (1949-) for their work on the Skarn deposit at Fuka, Japan. | ||
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Henmilite + Pronunciation ![]() |
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ICSD 202148 | ||
PDF 40-481 | |||
Henmilite Image | |||
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Henmilite Crystallography |
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a:b:c =0.7222:1:0.7081 | ||
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a = 5.7617, b = 7.9774, c = 5.6488, Z = 1; alpha = 109.611°, beta = 91.473°, gamma = 83.686° V = 243.01 Den(Calc)= 2.52 | ||
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Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: P1 | ||
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By Intensity(I/Io): 5.25(1), 4.35(0.5), 3.709(0.4), | ||
Physical Properties of Henmilite |
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Bluish violet. | ||
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2.51 | ||
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Transparent | ||
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Fragile - Crystals with a delicate and easily injured structure. | ||
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Microscopic Crystals - Crystals visible only with microscopes. | ||
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1.5-2 - Talc-Gypsum | ||
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Vitreous (Glassy) | ||
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pale violet | ||
Optical Properties of Henmilite |
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CI meas= 0.001 (Superior) - where the CI = (1-KPDmeas/KC) CI calc= 0.005 (Superior) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2392,KPDmeas= 0.2401,KC= 0.2404 Ncalc = 1.6 - 1.61 |
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Biaxial (-), a=1.585, b=1.608, g=1.615, bire=0.0300, 2V(Calc)=56, 2V(Meas)=58. | ||
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pale pink. | ||
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pale purple. | ||
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pale blue. | ||
Calculated Properties of Henmilite |
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Bulk Density (Electron Density)=2.54 gm/cc note: Specific Gravity of Henmilite =2.51 gm/cc. |
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Fermion Index = 0.01 Boson Index = 0.99 |
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PEHenmilite = 9.95 barns/electron U=PEHenmilite x rElectron Density= 25.27 barns/cc. |
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GRapi = 0 (Gamma Ray American Petroleum Institute Units) Henmilite is Not Radioactive |
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Henmilite Classification |
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26.01.05.01 (26)Hydrated Borates Containing Hydroxyl or Halogen | ||
(26.01)Dana Type | |||
(26.01.05)Dana Group | |||
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06.AC.30 06 - BORATES | ||
06.A - Monoborates | |||
06.AC -B(O,OH)4, without and with additional anions; 1(T), 1(T)+OH, etc. | |||
Other Henmilite Information |
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NAME( AntBidBlaNic5) PHYS. PROP.(Am.Min.,Vol.71,p1234-1239,1986) OPTIC PROP.(Dana8) | ||
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Links to other databases for Henmilite : 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 15 - WWW-MINCRYST Search for Henmilite using: Visit our Advertisers for Henmilite : Ask about Henmilite here : Print or Cut-and-Paste your Henmilite Specimen Label here :
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