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Pumpellyite-(Fe+++) Mineral Data + |
General Pumpellyite-(Fe+++) Information |
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| Ca2Fe+++Al2(SiO4)(Si2O7)(OH,O)2·(H2O) | |||
| Molecular Weight = 502.25 gm | |||
| Calcium 15.96 % Ca 22.33 % CaO | |||
| Aluminum 10.74 % Al 20.30 % Al2O3 | |||
| Iron 11.12 % Fe 15.90 % Fe2O3 | |||
| Silicon 16.78 % Si 35.89 % SiO2 | |||
| Hydrogen 0.80 % H 7.17 % H2O | |||
| Oxygen 44.60 % O | |||
| ______ ______ | |||
| 100.00 % 101.59 % = TOTAL OXIDE | |||
| Ca2Fe3+Al2(SiO4)(Si2O7)(OH)2·(H2O) | |||
| Metamorphic rocks. | |||
| Approved IMA 1973 | |||
| Langban, near Filipstad, Varmland, Sweden (actually the TL of julgoldite). Link to MinDat.org Location Data. | |||
| Named after the American geologist, R. Pumpelly (1837-1923). | |||
Search for Pumpellyite-(Fe ) Images | |||
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Pumpellyite-(Fe+++) Crystallography |
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| a:b:c =1.4844:1:3.2179 | |||
| a = 8.825, b = 5.945, c = 19.131, Z = 4; beta = 97.45° V = 995.23 Den(Calc)= 3.35 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: A2/m | |||
| By Intensity(I/Io): 2.9(1), 2.91(1), 3.79(0.9),2.19(0.7), 2.74(0.7), 4.38(0.7), 2.52(0.5), 4.68(0.5), | |||
Physical Properties of Pumpellyite-(Fe+++) |
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| [001] Good, [100] Good | |||
| Blue green, Olive green, Brown. | |||
| 3.2 | |||
| Sub Conchoidal - Fractures developed in brittle materials characterized by semi-curving surfaces. | |||
| Fibrous - Crystals made up of fibers. | |||
| Massive - Lamellar - Distinctly foliated fine-grained forms. | |||
| Spherical - Spherical, rounded aggregates. | |||
| 5.5 - Knife Blade | |||
| Vitreous (Glassy) | |||
| white | |||
Optical Properties of Pumpellyite-(Fe+++) |
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| CI meas= 0.098 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.138 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2051,KPDmeas= 0.2147,KC= 0.238 |
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| Biaxial (+), a=1.682, b=1.685, g=1.694, bire=0.0120 | |||
Calculated Properties of Pumpellyite-(Fe+++) |
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relectron=3.19 gm/cc |
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| Fermion Index = 0.01062 Boson Index = 0.98938 |
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PEPumpellyite-(Fe+++) = 6.19 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Pumpellyite-(Fe+++) is Not Radioactive |
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Pumpellyite-(Fe+++) Classification |
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| 58.2.2.6 (58)Sorosilicate Insular, Mixed, Single, and Larger Tetrahedral Groups | |||
| (58.2)with cations in [6] and higher coordination; single and double groups (n=1,2) | |||
| (58.2.2)Pumpellyite group | |||
| VIII/C.24-42 VIII - Silicates | |||
| VIII/C - Sorosilicates, mixed structure with [SiO4]2- "inseln" and [Si2O7]6- groups | |||
| VIII/C.24 - Pumpellyite group | |||
Other Pumpellyite-(Fe+++) Information |
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| NAME( Duda&Rejl90) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8) | |||
| Links to other databases for Pumpellyite-(Fe+++) : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -Handbook of Mineralogy (MinSocAm) 6 -MinDAT 7 -MinMax(Deutsch) 8 -MinMax(English) 9 -Mineralienatlas (Deutsch) 10 -QUT Mineral Atlas Search for Pumpellyite-(Fe+++) using: Visit our Advertisers for Pumpellyite-(Fe+++) : Translate Pumpellyite-(Fe+++) Mineral Data : Ask about Pumpellyite-(Fe+++) here : Print or Cut-and-Paste your Pumpellyite-(Fe+++) Specimen Label here :
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