[What's New] [Mineral Galleries] [About Us] [Contacts] [Login] At AA Mineral Specimens, we source quality Mineral Specimens, Fossils, Gemstones, Decorative Stones, Lapidary Material and Specimen Sets world-wide General Hodgkinsonite InformationMnZn2SiO4(OH)2 |
Molecular Weight = 311.82 gm |
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Manganese 17.62 % Mn 22.75 % MnO |
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Zinc 41.94 % Zn 52.20 % ZnO |
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Silicon 9.01 % Si 19.27 % SiO2 |
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Hydrogen 0.65 % H 5.78 % H2O |
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Oxygen 30.79 % O |
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100.00 % 100.00 % = TOTAL OXIDE |
Mn2+Zn2(SiO4)(OH)2 |
Metamorphosed zinc-manganese deposit. |
Valid Species (Pre-IMA) 1913 |
Franklin, Sussex Co., New Jersey, USA. Link to MinDat.org Location Data. |
Named for H. H. Hodgkinson, assistant underground supervisor of Franklin mine who discovered the mineral. |
Hodgkinsonite + Pronunciation |
ICSD 25709 |
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PDF 35-554 |
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Hodgkinsonite Crystallographya:b:c =2.2121:1:1.5385 |
a = 11.764, b = 5.318, c = 8.182, Z = 4; beta = 95.42° V = 509.59 Den(Calc)= 4.06 |
Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c |
By Intensity(I/Io): 2.869(1), 2.965(0.8), 11.82(0.55), |
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| Physical Properties of Hodgkinsonite{???} Perfect |
Light pink, Orange, Reddish brown. |
3.91 |
Translucent to subtranslucent to opaque |
Brittle - Generally displayed by glasses and most non-metallic minerals. |
Acicular - Occurs as needle-like crystals. |
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) |
4.5-5 - Near Apatite |
Fluorescent, Long UV=red, weak pink dull dark purple. |
Vitreous (Glassy) |
| Optical Properties of HodgkinsoniteCI meas= -0.006 (Superior) - where the CI = (1-KPDmeas/KC) |
CI calc= 0.031 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1812,KPDmeas= 0.1882,KC= 0.187 Ncalc = 1.73 - 1.76 Biaxial (-), a=1.72, b=1.741, g=1.746, bire=0.0260 |
| Calculated Properties of HodgkinsoniteBulk Density (Electron Density)=3.74 gm/cc |
note: Specific Gravity of Hodgkinsonite =3.91 gm/cc. Fermion Index = 0.02 |
Boson Index = 0.98 PEHodgkinsonite = 25.90 barns/electron |
U=PEHodgkinsonite x rElectron Density= 96.77 barns/cc. GRapi = 0 (Gamma Ray American Petroleum Institute Units) |
Hodgkinsonite is Not Radioactive | Hodgkinsonite Classification52.02.01.03 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O |
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(52.02)with cations in [4] and >[4] coordination |
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(52.02.01)Euclase group |
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09.AE.20 09 - SILICATES (Germanates) |
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09.A - Nesosilicates |
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09.AE -Nesosilicates with additional (O,OH,F,H2O); |
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| Other Hodgkinsonite InformationNAME( Dana8) PHYS. PROP.(Collectors Book of Fluorescent Minerals) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990) |
Links to other databases for Hodgkinsonite : |
1 - Am. Min. Crystal Structure Database 2 - Amethyst Galleries' Mineral Gallery 3 - Athena 4 - EUROmin Project 5 - Ecole des Mines de Paris 6 - Franklin Minerals(Dunn) 7 - Franklin Minerals(Palache) 8 - Google Images 9 - Google Scholar 10 - Handbook of Mineralogy (MinSocAm) 11 - Handbook of Mineralogy (UofA) 12 - MinDAT 13 - MinMax(Deutsch) 14 - MinMax(English) 15 - Mineralienatlas (Deutsch) 16 - Minerals of Franklin and Sterling Hill 17 - QUT Mineral Atlas 18 - Ruff.Info 19 - WWW-MINCRYST Search for Hodgkinsonite using: Visit our Advertisers for Hodgkinsonite : 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 Hodgkinsonite Mineral Data : Ask about Hodgkinsonite here : Print or Cut-and-Paste your Hodgkinsonite Specimen Label here :
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