General Challacolloite Information![]() KPb2Cl5 |
![]() Molecular Weight = 630.83 gm |
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Potassium 6.32 % K 7.62 % K2O |
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Lead 65.69 % Pb 73.30 % Pb2O3 |
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Chlorine 27.99 % Cl 27.99 % Cl |
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- %
Cl -6.32 % -O=Cl2 |
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100.00 % 102.59 % = TOTAL OXIDE |
![]() K1.02Pb2Cl4.98 |
![]() Intergrown with cotunnite (PbCl2) and a mixture of boleite and pseudoboleite in aggregates up to 4 mm in size. |
![]() Approved IMA 2004 (Dana # Added) |
![]() Challacollo Silver mine, south east of Iquique, Atacama desert, northern Chile. Link to MinDat.org Location Data. |
![]() Named for the locality. |
![]() IMA2004-028 |
| | Challacolloite Image
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Challacolloite Crystallography![]() a:b:c =1.1174:1:1.5747 |
![]() a = 8.864, b = 7.932, c = 12.491, Z = 4; beta = 90.153° V = 878.23 Den(Calc)= 4.77 |
![]() Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/c |
![]() By Intensity(I/Io): 3.686(1), 3.609(0.49), 2.669(0.42),8.855(0.39), 3.961(0.31), 2.548(0.18), 2.095(0.16), 5.335(0.14), 2.215(0.13), |
| Physical Properties of Challacolloite![]() Colorless, White. |
![]() Brittle - Subconchoidal - Brittle frature with subconchoidal fragments |
![]() Aggregates - Made of numerous individual crystals or clusters. |
![]() 2-3 - Gypsum-Calcite |
![]() Adamantine - Greasy |
![]() white |
| Optical Properties of Challacolloite![]() Biaxial (+), a=2.004, b=2.01, g=2.024, bire=0.0200 |
| Calculated Properties of Challacolloite![]() Bulk Density (Electron Density)=4.05 gm/cc |
note: Specific Gravity of Challacolloite =4.77 gm/cc. ![]() Fermion Index = 0.14 |
Boson Index = 0.86 ![]() PEChallacolloite =1,189.48 barns/electron |
U=PEChallacolloite x relectron=4,821.56 barns/cc. ![]() |
GRapi = 77.53 (Gamma Ray American Petroleum Institute Units)
Estimated Radioactivity from Challacolloite | Challacolloite Classification![]() 11.05.08.01 (11)Halide Complexes; Alumino-fluorides |
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(11.05)where (A)m B (X)6 |
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(11.05.08)Challacolloite Group |
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![]() 03.AA.55 03 - HALIDES |
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03.A - Simple Halides, Without H2O |
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03.AA -M:X = 1:1, 2:3, 3:5, etc. |
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| Other Challacolloite Information![]() NAME( AmMin, v91, p1452) PHYS. PROP.(AmMin, v91, p1452) OPTIC PROP.(AmMin, v91, p1452) |
![]() Links to other databases for Challacolloite : |
1 - Am. Min. Crystal Structure Database 2 - Athena 3 - GeoScienceWorld 4 - Google Images 5 - Google Scholar 6 - MinDAT 7 - Mineralienatlas (Deutsch) 8 - Online Mineral Museum 9 - QUT Mineral Atlas 10 - Ruff.Info Search for Challacolloite using: Visit our Advertisers for Challacolloite : A Bijoux Google Search for ChallacolloiteDakota Matrix Minerals Google Search for Challacolloite John Betts Fine Minerals Search for Challacolloite McDougall Minerals Google Search for Challacolloite Rock and Mineral Shows Google Search for Challacolloite Weinrich Minerals, Inc. Google Search for Challacolloite Ask about Challacolloite here : Print or Cut-and-Paste your Challacolloite Specimen Label here :
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