[Minerals] [Gems] [Sale Items] [Gold Rings] [Big Stuff] [Main Page] Shop early for Holiday Season and get the best stuff. You can put it on layaway for up to six weeks! General Johillerite InformationNa(Mg,Zn)3Cu(AsO4)3 |
Molecular Weight = 610.00 gm |
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Potassium 0.19 % K 0.23 % K2O |
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Sodium 2.90 % Na 3.91 % Na2O |
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Magnesium 8.69 % Mg 14.40 % MgO |
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Aluminum 0.27 % Al 0.50 % Al2O3 |
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Zinc 1.39 % Zn 1.73 % ZnO |
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Iron 2.38 % Fe 3.40 % Fe2O3 |
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Copper 16.15 % Cu 20.21 % CuO |
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Arsenic 36.36 % As 55.76 % As2O5 |
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Phosphorus 0.20 % P 0.47 % P2O5 |
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Oxygen 31.47 % O |
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______ ______ |
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100.00 % 100.63 % = TOTAL OXIDE |
Na0.77K0.03Mg2.18Zn0.13Cu1.55Fe3+0.26Al0.06As2.96P0.04O12 |
Found in cavities in altered tennantite-chalcocite ore. |
Approved IMA 1982 |
Tsumeb, Namibia. Link to MinDat.org Location Data. |
Named for Johannes Eric Hiller (1911-1972), professor of mineralogy, Stuttart, Germany. |
Johillerite + Pronunciation |
ICSD 63284 |
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PDF 35-522 |
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Johillerite Crystallographya:b:c =0.53:1:0.8688 |
a = 6.752, b = 12.739, c = 11.068, Z = 4; beta = 100.37° V = 936.45 Den(Calc)= 4.33 |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: I2/c |
By Intensity(I/Io): 2.75(1), 3.25(0.8), 4.06(0.5),1.66(0.5), 2.64(0.5), 1.682(0.4), 1.954(0.4), 3.5(0.4), |
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| Physical Properties of Johillerite{010} Perfect, {100} Good, {001} Good |
Violet. |
4.15 |
Transparent |
Aggregates - Made of numerous individual crystals or clusters. |
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) |
3 - Calcite |
Vitreous (Glassy) |
| Optical Properties of JohilleriteCI meas= -0.018 (Superior) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.024 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1725,KPDmeas= 0.18,KC= 0.1767 Ncalc = 1.73 - 1.77 Biaxial (+), a=1.715, b=1.743, g=1.783, bire=0.0680, 2V(Calc)=82, 2V(Meas)=80. |
| Calculated Properties of JohilleriteBulk Density (Electron Density)=3.89 gm/cc |
note: Specific Gravity of Johillerite =4.15 gm/cc. Fermion Index = 0.0099134207 |
Boson Index = 0.9900865793 PEJohillerite = 34.09 barns/electron |
U=PEJohillerite x relectron= 132.61 barns/cc. |
GRapi = 2.59 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Johillerite | Johillerite Classification38.02.03.08 (38)Anhydrous Phosphates, etc |
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(38.02)(A+ B++)5 (XO4)3 |
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(38.02.03)Alluaudite-Wyllieite Group (Alluaudite Subgroup) |
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08.AC.10 08 - PHOSPHATES, ARSENATES, VANADATES |
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08.A - Phosphates, etc. without additional anions, without H2O |
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08.AC -With medium-sized and large cations |
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| Other Johillerite InformationNAME( Dana8) PHYS. PROP.(Dana8, CanMin, v 42, p 717) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
Links to other databases for Johillerite : |
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 15 - WWW-MINCRYST Search for Johillerite using: Visit our Advertisers for Johillerite : AA Mineral SpecimensB & L Fine Minerals Crystalarium.com Dan Weinrich Fine Minerals Dan Weinrich Auctions Dakota Matrix Desert Winds Gems and Minerals Excalibur Minerals Exceptional Minerals Fabre Minerals Heliodor John Betts Fine Minerals Mason's Minerals Mineral News Mineral of the Month Club Wrights Rock Shop Translate Johillerite Mineral Data : Ask about Johillerite here : Print or Cut-and-Paste your Johillerite Specimen Label here :
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