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Freedite Mineral Data + |
General Freedite Information |
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| Pb8Cu+(As+++O3)2O3Cl5 | |||
| Molecular Weight = 2,192.25 gm | |||
| Copper 2.90 % Cu 3.26 % Cu2O | |||
| Arsenic 6.84 % As 9.02 % As2O3 | |||
| Lead 75.61 % Pb 81.45 % PbO | |||
| Chlorine 8.09 % Cl 8.09 % Cl | |||
| - % Cl -1.82 % -O=Cl2 | |||
| Oxygen 6.57 % O | |||
| ______ ______ | |||
| 100.00 % 100.00 % = TOTAL OXIDE | |||
| Pb8Cu(AsO3)2O3Cl5 | |||
| Weathered lead slags. | |||
| Approved IMA 1985 | |||
| Laurion, Greece. Link to MinDat.org Location Data. | |||
| Named for Robert L. Freed (1950-), U.S. Mineralogist. | |||
| ICSD 68176 | |||
| PDF 39-326 | |||
Search for Freedite Images | |||
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Freedite Crystallography |
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| a:b:c =0.6755:1:0.3714 | |||
| a = 13.578, b = 20.099, c = 7.465, Z = 4; beta = 105.73° V = 1,960.94 Den(Calc)= 7.43 | |||
| Monoclinic - PrismaticH-M Symbol (2/m) Space Group: C 2/m | |||
| By Intensity(I/Io): 2.949(1), 2.734(0.8), 2.83(0.8), | |||
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Mouse |
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Physical Properties of Freedite |
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| [100] Perfect | |||
| Greenish yellow. | |||
| 7 | |||
| 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) | |||
| yellow | |||
Optical Properties of Freedite |
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| CI meas= 0.21 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.256 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1211,KPDmeas= 0.1286,KC= 0.1627 |
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| Biaxial (?), b=1.9 | |||
Calculated Properties of Freedite |
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relectron=5.80 gm/cc |
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| Fermion Index = 0.16713 Boson Index = 0.83287 |
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PEFreedite =1,408.62 barns/electron |
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| GRapi = 0 (Gamma Ray American Petroleum Institute Units) Freedite is Not Radioactive |
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Freedite Classification |
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| 46.1.5.1 (46)Basic or Halogen-Containing Antimonites, Arsenites and Phosphites | |||
| (46.1)where (A B)m (XO3)p Zq | |||
| (46.1.5)Dana Group | |||
| IV/J.03-20 IV - Oxides | |||
| IV/J - Arsenides with [AsO3]3- groups | |||
| IV/J.03 - Finnemanite - Nealite series | |||
Other Freedite Information |
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| NAME( Dana8) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Dana8) | |||
| Links to other databases for Freedite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 - EUROmin Project 4 -Google Images 5 -Google Scholar 6 -Handbook of Mineralogy (UofA) 7 -MinDAT 8 -MinMax(Deutsch) 9 -MinMax(English) 10 -Mineralienatlas (Deutsch) 11 -QUT Mineral Atlas 12 - WWW-MINCRYST 13 -École des Mines de Paris Search for Freedite using: Visit our Advertisers for Freedite : Translate Freedite Mineral Data : Ask about Freedite here : Print or Cut-and-Paste your Freedite Specimen Label here :
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