Caichengyunite (original) (raw)
Valid as an unnamed mineral
Formula:
Fe2+3Al2(SO4)6 · 30H2O
Crystal System:
Monoclinic
Name:
Named for Chinese geology professor Cai Chen Yung (1907-1982).
Grayish-white filiform, fibrous aggregates.
Unique IdentifiersHide
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Long-form identifier:
mindat:1:1:39649:9
4f2959b6-7697-4702-b284-96bbcd158cf8
IMA Classification of CaichengyuniteHide
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IMA status notes:
Unnamed (probably valid)
Approval history:
Unnamed, but probably valid.
Classification of CaichengyuniteHide
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7.CB.57
7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
C : Sulfates (selenates, etc.) without additional anions, with H2O
B : With only medium-sized cations
Physical Properties of CaichengyuniteHide
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Density:
2.20 g/cm3 (Measured) 2.19 g/cm3 (Calculated)
Optical Data of CaichengyuniteHide
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RI values:
_n_α = 1.476 _n_β = 1.478 _n_γ = 1.481
δ = 0.005
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Optical Extinction:
Inclined extinction 5-10° parallel to the fibers.
Chemistry of CaichengyuniteHide
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Mindat Formula:
Fe2+3Al2(SO4)6 · 30H2O
Crystallography of CaichengyuniteHide
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Crystal System:
Monoclinic
Cell Parameters:
a = 7.63 Å, b = 24.13 Å, c = 22.64 Å
β = 111.06°
Ratio:
a:b:c = 0.316 : 1 : 0.938
Unit Cell V:
3,889.87 ų (Calculated from Unit Cell)
X-Ray Powder DiffractionHide
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Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.494 Å | (14) |
| 4.886 Å | (100) |
| 3.776 Å | (21) |
| 3.252 Å | (13) |
| 2.727 Å | (12) |
First Recorded Occurrence of CaichengyuniteHide
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General Appearance of First Recorded Material:
Grayish white, filiform, fibrous aggregates with grains up to 30 mm long and 0.01 mm in diameter.
Place of Conservation of First Recorded Material:
Geological Setting of First Recorded Material:
Underground walls of an oxidized Pb-Zn ore deposit.
Associated Minerals at First Recorded Locality:
Related Minerals - Strunz-mindat GroupingHide
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| 7.CB. | Sarvodaite | Al2(SO4)3 · 5H2O | Mon. 2/m : _P_21/m |
|---|---|---|---|
| 7.CB.02 | Voudourisite | CdSO4 · H2O | Mon. 2/m : _P_21/m |
| 7.CB.05 | Dwornikite | Ni(SO4) · H2O | Mon. 2/m : _B_2/b |
| 7.CB.05 | Gunningite | ZnSO4 · H2O | Mon. 2/m : _B_2/b |
| 7.CB.05 | Kieserite | MgSO4 · H2O | Mon. 2/m : _B_2/b |
| 7.CB.05 | Poitevinite | (Cu,Fe)SO4 · H2O | Tric. 1 : _P_1 |
| 7.CB.05 | Szmikite | MnSO4 · H2O | Mon. 2/m : _B_2/b |
| 7.CB.05 | Szomolnokite | FeSO4 · H2O | Mon. 2/m : _B_2/b |
| 7.CB.05 | Cobaltkieserite | CoSO4 · H2O | Mon. 2/m : _B_2/b |
| 7.CB.07 | Sanderite | MgSO4 · 2H2O | Orth. 222 : _P_212121 |
| 7.CB.10 | Bonattite | CuSO4 · 3H2O | Mon. m : B b |
| 7.CB.12 | Belogubite | CuZn(SO4)2 · 10H2O | Tric. 1 : _P_1 |
| 7.CB.15 | Aplowite | (Co,Mn,Ni)SO4 · 4H2O | Mon. 2/m |
| 7.CB.15 | Boyleite | (Zn,Mg)SO4 · 4H2O | Mon. 2/m : _P_21/b |
| 7.CB.15 | Ilesite | Mn2+(SO4) · 4H2O | Mon. 2/m |
| 7.CB.15 | Rozenite | FeSO4 · 4H2O | Mon. 2/m : _P_21/b |
| 7.CB.15 | Starkeyite | MgSO4 · 4H2O | Mon. 2/m : _P_21/b |
| 7.CB.15 | Drobecite | CdSO4 · 4H2O | Mon. 2/m : _P_21/m |
| 7.CB.15 | Cranswickite | MgSO4 · 4H2O | Mon. m : B b |
| 7.CB.20 | Chalcanthite | CuSO4 · 5H2O | Tric. 1 : _P_1 |
| 7.CB.20 | Jôkokuite | MnSO4 · 5H2O | Tric. 1 : _P_1 |
| 7.CB.20 | Pentahydrite | MgSO4 · 5H2O | Tric. 1 : _P_1 |
| 7.CB.20 | Siderotil | FeSO4 · 5H2O | Tric. |
| 7.CB.25 | Bianchite | Zn(SO4) · 6H2O | Mon. 2/m : _P_2/m |
| 7.CB.25 | Chvaleticeite | Mn(SO4) · 6H2O | Mon. 2/m : _B_2/b |
| 7.CB.25 | Ferrohexahydrite | FeSO4 · 6H2O | Mon. 2/m : _B_2/b |
| 7.CB.25 | Hexahydrite | MgSO4 · 6H2O | Mon. 2/m : _P_2/m |
| 7.CB.25 | Moorhouseite | Co(SO4) · 6H2O | Mon. 2/m : _B_2/b |
| 7.CB.25 | Nickelhexahydrite | Ni(SO4) · 6H2O | Mon. 2/m : _B_2/b |
| 7.CB.30 | Retgersite | NiSO4 · 6H2O | Tet. 422 : _P_41212 |
| 7.CB.35 | Bieberite | CoSO4 · 7H2O | Mon. 2/m : _P_2/m |
| 7.CB.35 | Boothite | CuSO4 · 7H2O | Mon. 2/m : _P_21/b |
| 7.CB.35 | Mallardite | MnSO4 · 7H2O | Mon. 2/m : _P_2/m |
| 7.CB.35 | Melanterite | Fe2+(H2O)6SO4 · H2O | Mon. 2/m : _P_21/b |
| 7.CB.35 | Zincmelanterite | (Zn,Cu,Fe)SO4 · 7H2O | Mon. 2/m : _P_21/b |
| 7.CB.35 | Alpersite | (Mg,Cu)(SO4) · 7H2O | Mon. 2/m : _P_21/b |
| 7.CB.40 | Epsomite | MgSO4 · 7H2O | Orth. 222 : _P_212121 |
| 7.CB.40 | Goslarite | ZnSO4 · 7H2O | Orth. 222 : _P_212121 |
| 7.CB.40 | Morenosite | NiSO4 · 7H2O | Orth. 222 : _P_212121 |
| 7.CB.45 | Alunogen | Al2(SO4)3 · 17H2O | Tric. 1 : _P_1 |
| 7.CB.45 | Meta-alunogen | Al2(SO4)3 · 12H2O | Orth. |
| 7.CB.50 | Aluminocoquimbite | Al2Fe2(SO4)6(H2O)12 · 6H2O | Trig. 3_m_ _(_32/m ) : P_31_c |
| 7.CB.50 | Lazaridisite | 3CdSO4 · 8H2O | Mon. 2/m : _B_2/b |
| 7.CB.52 | Pararaisaite | CuMg[Te6+O4(OH)2] · 6H2O | Mon. 2/m : _P_21/b |
| 7.CB.55 | Coquimbite | AlFe3(SO4)6(H2O)12 · 6H2O | Trig. 3_m_ _(_32/m ) : P_31_c |
| 7.CB.55 | Paracoquimbite | Fe4(SO4)6(H2O)12 · 6H2O | Trig. 3 : _R_3 |
| 7.CB.55 | Rhomboclase | (H5O2)Fe3+(SO4)2 · 2H2O | Orth. m m m _(_2/_m_2/_m_2/m ) : P n m a |
| 7.CB.55 | Raisaite | CuMg[Te6+O4(OH)2] · 6H2O | Mon. 2/m : _B_2/b |
| 7.CB.60 | Kornelite | Fe2(SO4)3 · 7H2O | Mon. 2/m : _P_21/m |
| 7.CB.65 | Quenstedtite | Fe2(SO4)3 · 11H2O | Tric. 1 : _P_1 |
| 7.CB.70 | Lausenite | Fe2(SO4)3 · 5H2O | Mon. 2/m : _P_21/m |
| 7.CB.75 | Lishizhenite | ZnFe2(SO4)4 · 14H2O | Tric. 1 : _P_1 |
| 7.CB.75 | Römerite | Fe2+Fe3+2(SO4)4 · 14H2O | Tric. 1 : _P_1 |
| 7.CB.80 | Ransomite | CuFe2(SO4)4 · 6H2O | Mon. 2/m : _P_21/b |
| 7.CB.85 | Apjohnite | Mn2+Al2(SO4)4 · 22H2O | Mon. 2/m : _P_21/b |
| 7.CB.85 | Bílinite | Fe2+Fe3+2(SO4)4 · 22H2O | Mon. 2/m : _P_21/b |
| 7.CB.85 | Dietrichite | (Zn,Fe2+,Mn2+)Al2(SO4)4 · 22H2O | Mon. 2/m : _P_21/b |
| 7.CB.85 | Halotrichite | FeAl2(SO4)4 · 22H2O | Mon. 2 : _P_2 |
| 7.CB.85 | Pickeringite | MgAl2(SO4)4 · 22H2O | Mon. 2/m : _P_21/b |
| 7.CB.85 | Redingtonite | (Fe2+,Mg,Ni)(Cr,Al)2(SO4)4 · 22H2O | Mon. 2 |
| 7.CB.85 | Wupatkiite | (Co,Mg,Ni)Al2(SO4)4 · 22H2O | Mon. 2/m : _P_21/b |
| 7.CB.90 | Meridianiite | MgSO4 · 11H2O | Tric. 1 : _P_1 |
Fluorescence of CaichengyuniteHide
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Other InformationHide
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Notes:
Rapidly soluble in water.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for CaichengyuniteHide
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References for CaichengyuniteHide
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Localities for CaichengyuniteHide
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This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the 
symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
Locality ListHide
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- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. 
- Good crystals or important locality for species. 
- World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).
All localities listed without proper references should be considered as questionable.
| China (FRL) | |
|---|---|
| Sichuan Liangshan Yi Huidong County ⓘ Longshu Pb-Zn deposit (FRL) | Ru-bo Zhang et al. (2002) +1 other reference |