| Caichengyunite Mineral Data |
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- 29.9.4.1 Caichengyunite ! Fe3Al2(SO4)6·30(H2O) Mono Mono
General Caichengyunite Information |
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 Chemical Formula: |
Fe++3Al2(SO4)6·30(H2O) | ||
| Composition: |
Molecular Weight = 1,345.76 gm | ||
| Aluminum 4.39 % Al 8.30 % Al2O3 | |||
| Iron 13.16 % Fe 16.92 % FeO | |||
| Hydrogen 4.43 % H 39.62 % H2O | |||
| Sulfur 14.30 % S 35.70 % SO3 | |||
| Oxygen 63.72 % O | |||
| ______ ______ | |||
| 100.00 % 100.54 % = TOTAL OXIDE | |||
| Empirical Formula: |
Fe2+3.17Al2.19(SO4)6·29.6(H2O) | ||
| Environment: |
Forms on the underground walls of the mine. | ||
| IMA Status: |
Not Submitted IMA 2004 (Dana # Added) | ||
| Locality: |
Pb-Zn mine near the village of Longshu, Hiudong County, Sichuan Province, China. Link to MinDat.org Location Data. | ||
| Name Origin: |
Named for Cai Chen Yung (1907-1982), Chinese geologist and teacher. | ||
Search for Caichengyunite Images | |||
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Images:
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Caichengyunite Crystallography |
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| Axial Ratios: |
a:b:c =0.3162:1:0.9382 | ||
| Cell Dimensions: |
a = 7.63, b = 24.13, c = 22.64, Z = 4; beta = 111.06° V = 3,889.87 Den(Calc)= 2.30 | ||
| Crystal System: |
MonoclinicSpace Group: Mono | ||
| X Ray Diffraction: |
By Intensity(I/Io): 4.886(1)(131), 3.776(0.21)(124), 5.494(0.14)(121),3.252(0.13)(036), 2.727(0.12)(205,117), | ||
Physical Properties of Caichengyunite |
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| Color: |
Grayish white. | ||
| Density: |
2.2 | ||
| Diaphaniety: |
Transparent | ||
| Habit: |
Encrustations - Forms crust-like aggregates on matrix. | ||
| Habit: |
Fibrous - Crystals made up of fibers. | ||
| Habit: |
Water Soluble - Water soluble mineral. | ||
| Hardness: |
1.5-2 - Talc-Gypsum | ||
| Luster: |
Vitreous - Silky | ||
| Streak: |
white | ||
Optical Properties of Caichengyunite |
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| Gladstone-Dale: |
CI meas= 0.12 (Poor) - where the CI = (1-KPDmeas/KC) CI calc= 0.158 (Poor) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.2078,KPDmeas= 0.2172,KC= 0.2469 |
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| Optical Data: |
Biaxial (+), a=1.4756, b=1.4775, g=1.4805, bire=0.0049 | ||
Calculated Properties of Caichengyunite |
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| Electron Density: |
relectron=2.27 gm/cc |
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| Fermion Index |
Fermion Index = 0.00417 Boson Index = 0.99583 |
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| Photoelectric: |
PECaichengyunite = 4.81 barns/electron |
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| Radioactivity: |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Caichengyunite is Not Radioactive |
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Caichengyunite Classification |
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| Dana Class: |
29.9.4.1 (29)Hydrated Acid and Sulfates | ||
| (29.9)with miscellaneous formulae | |||
| (29.9.4)Dana Group | |||
| Strunz Class: |
VI/X.00-00 VI - Sulfates,Chromates,Molybdates and Tungstates | ||
| VI/X - Unclassified Strunz Sulfates,Chromates,Molybdates and Tungstates | |||
| VI/X.00 - Sulfate, Hydrated | |||
Other Caichengyunite Information |
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| References: |
NAME( AmMin, v 89, p 894) PHYS. PROP.(AmMin, v 89, p 894) OPTIC PROP.(AmMin, v 89, p 894) | ||
| See Also: |
Links to other databases for Caichengyunite : 1 -Am. Min. Crystal Structure Database 2 -Athena 3 -Google Images 4 -Google Scholar 5 -MinDAT 6 -MinMax(Deutsch) 7 -MinMax(English) 8 -Mineralienatlas (Deutsch) 9 -QUT Mineral Atlas Search for Caichengyunite using: Visit our Advertisers for Caichengyunite : Translate Caichengyunite Mineral Data : Ask about Caichengyunite here : Print or Cut-and-Paste your Caichengyunite Specimen Label here :
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